18" (11/7/07): superb view at 450x in good seeing. The 1' diameter disc is slightly elongated ~E-W, ~60"x50" with a very narrow, brighter rim and darker center. The mag 14.4 central star was steadily visible. On closer inspection the thin rim was clearly irregular in surface brightness and slightly brighter along the SW and NE sides with a couple of tiny knots embedded in the rim. The slightly darker interior was weakly mottled or patchy with subtle variations in surface brightness.

17.5" (1/8/00): at 100x, this moderately bright PN was irregularly round, 1' diameter, weakly annular with a faint glimpse of the central star. There was a good contrast gain with the OIII filter and the image was crisp-edged, slightly elongated SW-NE and the small, darker center was more evident. Excellent view at 220x with the faint central star (mag 14.4) clearly visible. The surface brightness was irregular with an unevenly brighter outer rim. The central star was visible steadily at 280x and the overall surface brightness was mottled or "clumpy" (brighter on W and NE rim), darkening in the center.

17.5" (9/14/85): bright, moderately large, almost round, 1' diameter, high surface brightness. An easy mag 14.2 central star is visible. Appears darker near the central star with a brighter rim.

13" (1/28/84): slightly annular, very faint mag 14 central star visible.

8": fairly faint, moderately large, bluish, slightly elongated, sharp-edged.
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NGC 1502 = Cr 45 = OCL-383 = Lund 124
04 07 49 +62 19.9
V = 5.7; Size 8

13.1" (1/28/84): bright, striking cluster, 40 stars visible in a trapezoidal outline. The brightest is the striking double ·485 = 7.0/7.1 at 18" and the cluster also includes ·484 = 9.0/9.5 at 5". Located near the SE end of the chain of stars "Kemble's Cascade".
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NGC 1503 = ESO 083-013 = PGC 14137
03 56 33.5 -66 02 28
V = 13.4; Size 0.9x0.7; Surf Br = 12.7; PA = 140d

24" (4/4/08 - Magellan Observatory, Australia): fairly faint to moderately bright, small, round, 25" diameter. Contains a very small brighter core and occasional stellar nucleus. Located 18' E of brighter N1490.
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NGC 1504 = MCG -02-11-008 = PGC 14336
04 02 29.7 -09 20 07
V = 14.5; Size 0.7x0.4; Surf Br = 13.0

17.5" (12/30/99): very faint, very small, round, 20" diameter. Appears as a low surface brightness spot sandwiched between N1505 1.8' NE and a mag 12 star 1.6' W.
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NGC 1505 = MCG -02-11-009 = PGC 14339
04 02 36.4 -09 19 21
V = 14.2; Size 1.0x0.7; Surf Br = 13.7

17.5" (12/30/99): fairly faint, fairly small, slightly elongated E-W, 40"x30". Increases to a small bright core and stellar nucleus. Forms the vertex of an isosceles triangle with two mag 11.5-12.5 stars 3.5' WSW and SSW. Brighter of a close pair with N1504 1.8' SW (inside the triangle).
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NGC 1507 = UGC 02947 = MCG +00-11-009 = CGCG 392-002 = Mrk 1080 = PGC 14409
04 04 27.1 -02 11 21
V = 12.3; Size 3.6x0.9; Surf Br = 13.4; PA = 11d

13.1" (12/18/82): fairly faint, edge-on 4:1 N-S, even surface brightness. A mag 10.5 star is 3.4' SSE and a mag 13 star is 1.2' W.
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NGC 1508 = MCG +04-10-021 = CGCG 487-021 = NPM1G +25.0119 = PGC 14454
04 05 47.6 +25 24 31
V = 14.3; Size 0.5x0.4; Surf Br = 12.4

17.5" (11/14/87): fairly faint, small, round, bright core. UGC 2949 lies 15' SW.
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NGC 1509 = MCG -02-11-013 = NPM1G -11.0150 = Mrk 1079 = IC 2026 = PGC 14393
04 03 55.2 -11 10 44
V = 13.7; Size 0.9x0.6; Surf Br = 12.9

17.5" (12/30/99): faint, very small, round, 20" diameter. This is a very compact galaxy with a fairly high surface brightness. A mag 14.5 star is 1' E. Forms a close pair with MCG -02-11-012 just 1.2' E.

Discovered independently by Swift and Stone. Swift's RA is 9 tsec greater than M-02-11-013 = NPM1G -11.0150. Bigourdan reobserved the galaxy but assumed it was a nova and it received the number IC 2026.
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NGC 1510 = ESO 250-003 = MCG -07-09-006 = LGG 108-002 = PGC 14375
04 03 32.6 -43 24 01
V = 13.0; Size 1.3x0.7; Surf Br = 12.8; PA = 90d

13.1" (2/18/04 - Costa Rica): faint, very small, round, only 20" diameter. Forms an equilateral triangle with two mag 13.5 stars ~1.8' S and 1.7' WSW. Located 5' SW of N1512.

13.1" (11/29/86): not seen although far south from northern California. Forms a pair with brighter N1512.
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NGC 1511 = ESO 055-004 = LGG 107-002 = PGC 14236
03 59 36.7 -67 38 07
V = 11.3; Size 3.5x1.2; Surf Br = 12.7; PA = 125d

24" (4/4/08 - Magellan Observatory, Australia): at 200x appeared fairly bright, fairly large, elongated 3:1 NW-SE, ~2.5'x0.8'. Contains a bright, elongated core with a small very bright nucleus. Two stars mag 14-15 stars bracket the galaxy just 54" east and 1.3' west of center and just north of the center. The NE flank of the galaxy appears slightly brighter and more sharply defined and there is an impression of a dust lane on the south side. At 260x the galaxy has a mottled appearance and is slightly warped or asymmetric at the tips. A mag 10.8 star lies 3.5' SSE and a fainter edge-on, N1511A, is in the field 11' SSE. Member of a small group that includes N1473 and N1511A.
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NGC 1511A = ESO 055-005 = LGG 107-003 = PGC 14255
04 00 18.6 -67 48 25
V = 13.3; Size 1.7x0.4; Surf Br = 12.8; PA = 109d

24" (4/4/08 - Magellan Observatory, Australia): at 200x appears fairly faint, moderately large, edge-on 7:2 WNW-ESE, 1.5'x0.4', broadly concentrated with a slightly bulging core. Located 11' SSE of N1511 in a small group.
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NGC 1512 = ESO 250-004 = MCG -07-09-007 = AM 0402-433 = LGG 108-003 = PGC 14391
04 03 54.2 -43 20 56
V = 10.3; Size 8.9x5.6; Surf Br = 14.4; PA = 90d

13.1" (2/18/04 - Costa Rica): fairly bright, fairly large, oval 3:2 SW-NE. Sharply concentrated with a bright, 30" core. No spiral arms were visible, although there was some brightening at the ends of the major axis. Forms a pair with N1510 5' SW.

13.1" (11/29/86): faint, small, slightly elongated. Forms a pair with N1510 5' SW. Very far south for viewing from Northern California.
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NGC 1513 = Cr 46 = OCL-398 = Lund 125
04 09 55 +49 31.0
V = 8.4; Size 9

13.1" (1/18/85): about 60 stars mag 11 and fainter over unresolved background glow. Located 50' SE of Lambda Persei (V = 4.3).
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NGC 1514 = PK 165-15.1 = PN G165.5-15.2 = Crystal Ball Nebula
04 09 17.0 +30 46 33
V = 10.9; Size 136"x121"

18" (2/4/08): at 175x, appears as a large, roundish glow (~2.5'x2.2) surrounding a bright mag 9.4 central star. Excellent response to UHC and OIII filters. The surface brightness is clearly irregular with subtle brighter and darker regions. The SW and NE ends were slightly dimmer, while the NW and SE portions of the rim were brighter. The region around the central star was also slightly darker.

17.5" (12/30/99): at 100x, moderately bright, round, ~2' halo surrounding a prominent mag 9.5 star. Displayed an excellent response to UHC and OIII blinking while the H-beta filter killed the PN (OIII/H-beta = 12). With the OIII filter, the surface brightness was noticeably uneven, with the NW quadrant of the rim clearly brighter. The SE end was also weakly enhanced while the center and ends of the minor axis were slightly darker. At 220x using a UHC filter, the halo appeared nearly 2.5' in diameter. There was a small, darker "hole" surrounding the central star and halo was clearly irregular with a brighter "knot" on the SE side, while the NW portion of the halo was brighter along the rim.

17.5" (9/14/85): very bright, large, round, 2' diameter. Contains a very bright mag 9.5 central star surrounded by a fairly bright halo with an irregular surface brightness. Located midway between mag 8.3 SAO 57017 8' NNW and mag 9 SAO 57021 8' S.

13" (12/22/84): bright, fairly large, round, dominated by a mag 9.5 central star.
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NGC 1516 = MCG -02-11-017/018 = NGC 1524 = PGC 14515
04 08 07.4 -08 49 46
Size 0.5x0.4

17.5" (2/11/96): at first view (fairly poor seeing) appeared as a single but irregular galaxy elongated 2:1 NNW-SSE, 1.0'x0.5'. In periods of better seeing, the system resolved into an extremely close contact pair with the brighter component at the SSE end, round, 25" diameter. The fainter component is attached at the NNW end, round, 20" diameter. A mag 15 star lies 1' S.

This double system was discovered by WH (III 499) and observed twice by JH at the Cape although not resolved. Harold Corwin equates Stone's N1524/N1525 with N1516 A/B. Since N1516 was discovered first by William Herschel, it seems more appropriate that his number should apply to this gx, although it was only given a single designation. The RNGC dec is 3' too far S (verified on GSC). The components are listed separately in MCG.
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NGC 1516B = MCG -02-11-018 = N1525 = PGC 14516
04 08 08.2 -08 50 08
V = 13.5; Size 0.6x0.6; Surf Br = 12.2

17.5" (2/11/96): this is the brighter SSE component of the double system with N1516a. See description for N1516.
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NGC 1517 = UGC 02970 = CGCG 418-013 = PGC 14564
04 09 11.9 +08 38 56
V = 13.4; Size 1.1x1.0; Surf Br = 13.3

13.1" (1/28/84): faint, small, round, weak concentration. Located just 1.0' NW of a mag 10 star.
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NGC 1518 = ESO 550-007 = MCG -04-10-013 = PGC 14475
04 06 49.1 -21 10 35
V = 11.8; Size 3.0x1.3; Surf Br = 13.2; PA = 35d

18" (1/21/04): fairly bright, fairly large, elongated 3:1 SW-NE, ~2.8'x1.0', broad concentration with a large bulging core and tapered ends. Irregular, mottled surface brightness and fades on the SW end. Located 2.6' NE a mag 10 star.

17.5" (12/28/94): fairly faint, very elongated 3:1 SW-NE, 2.7'x0.9', weak concentration. Located 2.5' NE of a mag 9.5 star. Appears asymmetric with the SW end close to the bright star much fainter than the main body.

8" (1/1/84): faint, very elongated 3:1 streak SW-NE. A mag 10 star 2.5' SW interferes with viewing. N1521 lies 22' ENE.
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NGC 1519 = ESO 550-009 = MCG -03-11-013 = PGC 14514
04 08 07.5 -17 11 34
V = 12.9; Size 2.1x0.5; Surf Br = 13.0; PA = 107d

17.5" (2/8/91): fairly faint, fairly small, very elongated 3:1 ~E-W, broad concentration. Located 4.6' WNW of mag 8.8 SAO 149397.
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NGC 1521 = ESO 550-011 = MCG -04-10-015 = PGC 14520
04 08 18.9 -21 03 07
V = 11.4; Size 2.8x1.7; Surf Br = 13.1; PA = 10d

18" (1/21/04): moderately bright, fairly small, slightly elongated N-S, ~1.2'x1.0', fairly well concentrated with a small bright core and stellar nucleus. Mag 8.4 SAO 169161 lies 4.6' SSE.

8" (1/1/84): faint, very small, round, weakly concentrated. Located 5' NNW of mag 8.5 SAO 169161. Forms a pair with N1518 22' WSW.
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NGC 1524 = MCG -02-11-017 = N1516a
04 08 07.4 -08 49 47

See observing notes for N1516.

Discovered by Stone (I) along with N1525. Corwin identifies N1524 and N1525 with N1516A/B whose position is just 2' N. Since N1516 was discovered first by WH, historical precedence would suggest that N1516a/b should be the primary designation, although we are then left with a single number for this double system. Classified as nonexistent in RNGC. See Corwin's NGCBUGS.
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NGC 1525 = MCG -02-11-018 = N1516b
04 08 08.2 -08 50 08

See observing notes for N1516b.

Discovered by Stone (I). Corwin identifies N1524/1525 with N1516a/b whose position is just 2' N. Listed as nonexistent in RNGC. See comments for N1524.
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NGC 1528 = Cr 47 = Mel 23 = OCL-397
04 15 19 +51 12.7
V = 6.4; Size 24

13.1" (1/18/85): 80-100 stars in a 20' diameter. There are three bright stars on the W side including mag 8.5 SAO 24496 and mag 9.0 SAO 24501, includes many faint stars. Extremely faint naked-eye object!
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NGC 1530 = UGC 03013 = MCG +13-04-004 = CGCG 327-017 = VII Zw 12 = PGC 15018
04 23 26.7 +75 17 44
V = 11.5; Size 4.6x2.4; Surf Br = 13.9; PA = 17d

13.1" (1/18/85): fairly faint, fairly large, very diffuse, almost round, gradual weak concentration, no nucleus.
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NGC 1531 = ESO 359-026 = MCG -05-11-001 = PGC 14635
04 11 59.3 -32 51 05
V = 12.2; Size 1.3x0.9; Surf Br = 12.3; PA = 122d

13.1" (12/22/84): moderately bright, small, slightly elongated. Forms a close pair with larger and brighter N1532 1.6' SE.
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NGC 1532 = ESO 359-027 = MCG -05-11-002 = PGC 14638
04 12 04.3 -32 52 29
V = 9.9; Size 12.6x3.3; Surf Br = 13.8; PA = 33d

13.1" (12/22/84): bright, large, pretty edge-on 5:1 SW-NE, very bright nucleus, thin extensions. Forms a close pair with N1531 1.6' NW.
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NGC 1533 = ESO 157-003 = PGC 14582
04 09 51.8 -56 07 06
V = 10.7; Size 2.8x2.3; Surf Br = 12.6; PA = 151d

13.1" (2/19/04 - Costa Rica): fairly bright, moderately large, round, contains a small bright core. Collinear with two 11.5 magnitude stars 1' and 2' NE of center. Member of the Dorado group with N1546 40' E and the N1549/1553 pair less than a degree NE.
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NGC 1535 = PK 206-40.1 = PN G206.4-40.5 = Cleopatra's Eye
04 14 15.8 -12 44 22
V = 9.4; Size 48"x42"

18" (1/1/08): In good seeing at 565x the complex double shell structure of this gorgeous planetary was remarkable. The bright mag 12.5 central star is surrounded by a well-defined dark central hole with subtle mottling. This is surrounded by a striking bright inner ring that is relatively narrow and sharply defined. The ring has a clumpy appearance, particuarly on the north side and it dims slightly on the SE end. This 20" diameter ring is encased within an outer shell of fainter nebulosity that doubles the diameter. Although the inner ring is round, this outer envelope is slightly elongated SSW-NNE. At 807x the view was stunning with brighter knots within the inner ring appearing to sparkle at times.

13x80mm (1/15/07): fairly bright stellar object at 13x in my 80mm finder and very easy to identify with blinking. Appears as a soft bluish star at 25x and definitely non-stellar at 32x and 54x.

17.5" (12/30/99): this planetary has beautiful, bluish double-shell structure which was very evident at 100x surrounding a bright central star. The view at 380x and 500x was superb in good seeing. The double shell envelope was very prominent with a bright inner ring, ~20" diameter, with a fairly sharp edge embedded in a fainter roundish halo roughly doubling the diameter. The inner shell was irregularly darker surrounding the central star.

17.5" (2/8/91): very bright, fairly small, high surface brightness, mag 12.5 central star visible, blue color. This planetary has a double shell structure with inner shell slightly elongated and a faint rounder outer shell. Small dark gaps are visible around the central star.

13" (12/22/84): at 360x the central star visible surrounded by two shells. The bright inner shell has a small dark annulus surrounding the central star and the outer envelope is fainter and more diffuse.

8": bright, greenish, fairly small, round.
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NGC 1537 = ESO 420-012 = MCG -05-11-005 = PGC 14695
04 13 40.7 -31 38 43
V = 10.6; Size 3.9x2.6; Surf Br = 13.0; PA = 98d

13.1" (1/18/85): fairly bright, moderately large, elongated 3:2 ~E-W, prominent elongated core, stellar nucleus.
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NGC 1538 = MCG -02-11-027 = NPM1G -13.0170 = IC 2045 = PGC 14722
04 14 36.0 -13 10 30
V = 14.0; Size 1.1x0.6; Surf Br = 13.4

17.5" (12/30/99): faint, very small, round, 20" diameter, weak concentration. Situated between a mag 10 star 3' NE and a mag 9 star 5.5' SW. This galaxy is identified as IC 2045 in MCG and the NGC identification is not certain. IC 2047 lies 5' ESE (not picked up).

Stone's rough position (list I) is essentially correct (0.4 tmin E and 2' S of M-02-11-027). Probably the brightest in a cluster and the identification with M-02-11-027 is not certain as according to Corwin, Stone's sketch appears to show the second brightest member, IC 2047. This galaxy is identified as IC 2045 in MCG. Howe listed three objects here but the galaxy he identifies as IC 2045 is N1538 (same error made by Reinmuth). See NGCBUGS.
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NGC 1539 = CGCG 488-001 = V Zw 373 = PGC 14852
04 19 02.0 +26 49 38
V = 14.6; Size 0.5x0.5

18" (12/10/07): faint, small, slightly elongated ~SW-NE, 0.4'x0.35', moderate concentration with a small brighter core. Appears a little brighter than the catalogued magnitude. Located ~ 4' W of a NNW-SSE string of three mag 12-13 stars with another mag 12 star 3' W enclosing the galaxy with this triangular asterism.

Discovered by Marth. There is no galaxy at his position (single observation) but the position is 1.0 tmin E and 5' S of CGCG 488-001 which is a possible candidate. This would be a fairly large error for Marth, but Corwin has retained it as a possible identification. CGCG 488-001 is not listed in RC3 or MCG. See NGCBUGS.
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NGC 1540 = ESO 420-014 = AM 0413-283 = PGC 14733
04 15 10.6 -28 29 21
V = 13.5; Size 0.8x0.5; Surf Br = 12.3; PA = 5d

18" (1/21/04): fairly faint, fairly small, elongated 3:2 ~N-S, ~0.8'x0.5'. Appears to have a star or quasi-stellar knot at the N tip -- this is actually an interacting galaxy [N1540B]! Located 8' SW mag 9.4 SAO 169272 (wide double).
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NGC 1540B = (E420-IG14) = PGC 14734
04 15 10.2 -28 28 47

18" (1/21/04): appears as a faint, nearly stellar knot at the north edge of N1540.
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NGC 1541 = UGC 03001 = MCG +00-11-040 = CGCG 392-013 = PGC 14792
04 17 00.2 +00 50 06
V = 13.5; Size 1.3x0.5; Surf Br = 12.9; PA = 77d

17.5" (2/1/92): faint, small, elongated 2:1 WSW-ENE, small bright core. Located 7' SW of mag 8.8 SAO 111720.
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NGC 1542 = UGC 03003 = MCG +01-11-016 = CGCG 418-017 = PGC 14800
04 17 14.2 +04 46 55
V = 13.9; Size 1.3x0.5; Surf Br = 13.2; PA = 128d

17.5" (2/11/96): very faint, small, elongated 2:1 NW-SE, 40"x20", very weak concentration. A mag 14.5 star is 0.9' ENE of center. Collinear with a 1' pair of mag 11 stars about 5' SE.
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NGC 1544 = UGC 03160 = MCG +14-03-006 = CGCG 361-011 = CGCG 370-001 = NPM1G +86.0007 = PGC 16608
05 02 35.9 +86 13 20
V = 13.2; Size 1.3x0.9; Surf Br = 13.1; PA = 130d

17.5" (3/19/88): fairly faint, small, round. Several faint stars are near including an evenly matched mag 14.5 pair with 10" separation at the N edge 20" from center. This is the second closest NGC galaxy to the pole.
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NGC 1545 = Cr 49 = OCL-399 = Lund 131
04 20 56 +50 15.3
V = 6.2; Size 18

17.5" (12/28/94): about 50 stars scattered evenly over a 20' field with no dense areas or central concentration. A pretty pair of mag 7/8 stars are near the center (S445 = 7.3/8.2 at 72") with a blue mag 9 star to the west (SAO 24549) forming an isosceles triangle. A number of mag 11/12 stars are arranged in a curving stream oriented SW-NE which passes through the bright pair. At the north side of the cluster is a pretty colored pair ·519 = 7.9/9.4 at 18". Off the E side is a small circular group of five faint stars and one brighter star in a clump.

8": about two dozen stars in the cluster. The three brightest stars are mag 7.5-8.5. Includes chains of faint stars with double star ·519 = 7.9/9.4 at 18" at the N edge.
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NGC 1546 = ESO 157-012 = LGG 112-002 = PGC 14723
04 14 36.5 -56 03 39
V = 10.9; Size 3.0x1.7; Surf Br = 12.5; PA = 147d

13.1" (2/19/04 - Costa Rica): fairly bright, fairly small, elongated 2:1 NNW-SSE, 1.1'x0.5', even surface brightness except for a small brighter core. Located 8' NE of mag 7.5 HD 27142. A trio of 11-12th magnitude stars trail to the SW (closest is 1.7' W and is a very close double). Located in the Dorado Group ~25' SW of the N1553/1549 pair. N1533 lies 40' W.
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NGC 1547 = ESO 550-018 = MCG -03-11-020 = PGC 14799
04 17 12.4 -17 51 27
V = 13.6; Size 1.3x0.6; Surf Br = 13.1; PA = 133d

17.5" (11/10/96): fairly faint, fairly small, elongated 4:3 NW-SE, 0.8'x0.6'. Contains a faint stellar nucleus offset to the S side or a mag 15.5 star is superimposed [DSS image appears to show a superimposed star]. A mag 13 star lies 1.2' NE.

Discovered by Leavenworth (I). Described as "cl? or neb with sev vF st and one *11.5 n of center inv." Howe's corrected position is an exact match with E550-018 although Howe also described N1547 as a cluster. Incorrectly listed as nonexistent in RNGC. This galaxy is not identified as N1547 in MCG (-03-11-020) or plotted on U2000. GSC position 04 17 12.4 -17 51 27.
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NGC 1549 = ESO 157-016 = LGG 112-003 = PGC 14757
04 15 44.0 -55 35 30
V = 9.8; Size 4.9x4.1; Surf Br = 13.0; PA = 135d

13.1" (2/19/04 - Costa Rica): bright, moderately large, round, 1.5' diameter. Strongly concentrated with an intense 30" core and a bright stellar nucleus with direct vision. Cradled by a distinctive group of 5 stars including mag 8.7 SAO 233458 to the SSE. This member of the Dorado Group forms an interacting pair w/N1553 12' SSE.
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NGC 1550 = UGC 03012 = MCG +00-11-055 = CGCG 393-001 = N1551 = PGC 14880
04 19 37.9 +02 24 36
V = 12.0; Size 2.2x1.9; Surf Br = 13.5; PA = 30d

13.1" (1/18/85): faint, small, round, bright core, faint stellar nucleus.
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NGC 1551 = N1550 = U03012 = MCG +00-11-055 = CGCG 393-001 = PGC 14880
04 19 37.9 +02 24 36

See observing notes for N1550.

Discovered by WH (II 464). His declination was one degree in error and once corrected is identical to d'Arrest's N1550. By historical precidence II 464 = N1551 should probably apply but this galaxy is referred to as N1550 in modern catalogues. See NGCBUGS for discussion on this identification.
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NGC 1552 = UGC 03015 = MCG +00-12-007 = CGCG 393-005 = PGC 14907
04 20 17.6 -00 41 36
V = 12.9; Size 1.8x1.2; Surf Br = 13.7; PA = 110d

17.5" (2/1/92): fairly faint, faint extensions 3:2 WNW-ESE, even concentration to a small bright core, stellar nucleus. A mag 11 star is 2.8' WSW.
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NGC 1553 = ESO 157-017 = LGG 112-004 = PGC 14765
04 16 10.5 -55 46 48
V = 9.4; Size 4.5x2.8; Surf Br = 12.0; PA = 150d

13.1" (2/19/04 - Costa Rica): very bright, oval, elongated 5:2 NNW-SSE, 2.25'x1.0', very bright core, fairly high surface brightness halo. With averted vision the halo increases to nearly 3' in length. A mag 12 star is just W of the NNW tip and a slightly fainter star is off the SSE edge. Forms a bright pair with N1549 12' NNW in the Dorado Group.
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NGC 1554 = Struve's Lost Nebula = LBN 817 = Ced 32a = Sh 2-238
04 21 43.5 +19 31 14

17.5" (11/10/96): at the position of Struve's Lost Nebula is a mag 14 star noted in the observation of N1555 (Hind's Variable Nebula). This star is 4' WSW of T Tauri and is not involved with nebulosity.

Struve's Lost Nebula is part of the T Tauri nebulosity with N1555 (Hind's Variable Nebula). Discovered by O. Struve in 1868 and also observed by d'Arrest. Described in the Notes section of NGC by Dreyer as "neb, S, with an eccentric nucleus = *14". He notes that he was unable to perceive any nebulosity near the place with Lord Rosse's 6-foot telescope in 1877 and not found by Tempel. In the IC 2 notes and corrections section, Dreyer comments that Struve's nebula was not found by Barnard in 1895 or by Keeler on plates taken in 1899.

Modern sources such as Sky Catalogue 2000.0 group N1554 and N1555 together as a single object, although Corwin notes that NGC 1554 is not visible on the Palomar Sky Survey plates. At the NGC position and Bigourdan's position, there is a mag 14 star. RNGC incorrectly groups N1554/1555 together and places them about 1 tmin too far E. See NGCBUGS for more of the story.
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NGC 1555 = Hind's Variable Nebula = Ced 32b = Sh 2-238 = T Tau = HH 155 = PP 17
04 21 56.8 +19 32 04
Size 1

17.5" (11/10/96): this refers to Hind's variable nebula, illuminated by T Tauri (9-13). At 100x and 140x (unfiltered) an extremely faint haze was highly suspected on the W or WSW side of T Tauri (mag 9) in the direction of a mag 14 star to the west or slightly south (this star is Struve's N1554). No details were visible at 100x (did not appear as an arc) but a sketch made at 100x exactly matched the orientation of the nebulosity with respect to T Tauri. Nebulosity was not visible at 220x and no nebulosity was noted following T Tauri.

This is the famous Hind's Variable Nebula surrounding the variable T Tauri, discovered by Hind on Oct. 11, 1852 with a 7-inch refractor. It appears that it was rediscovered by Breen in 1855. The NGC position is correct. See comments by Dreyer in NGC, IC I and IC II notes section for discussion of various observations. Also see observations by Burnham in Publ. of Lick Observatory, II. Modern sources often group N1554 and N1555 (discovered by Struve) together, although there is no nebulosity visible on the Sky Survey surrounding the star at Struve's position.

The RNGC RA for N1554 (and N1555) in 1.0 tmin too far E. The position of the nebula was verified on the POSS (extremely faint on blue POSS but prominent on the red print) and listed in RNGC Corrections #6. The position stated in the Sky Catalogue 2000 of 04 21.8 +19 32 corresponds with the variable T Tauri (04 21 59.4 +19 32 08, GSC) which illuminates the nebula. The RNGC position should be corrected to 04 20.4 +19 29 (1975). See NGCBUGS for further discussion.
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NGC 1559 = ESO 084-010 = PGC 14814
04 17 35.8 -62 47 01
V = 10.6; Size 3.5x2.0; Surf Br = 12.6; PA = 64d

13.1" (2/18/04 - Costa Rica): moderately bright, fairly large, elongated 2:1 WSW-ENE, 3.0'x1.5', broad weak concentration. A mag 13.5 star is off the SW end, 2' from center and a brighter mag 12 star is 4.7' from center. Located 30' SE of mag 3.3 Alpha Reticulum and 28' N of the mag 6.1/7.8 double star Theta Reticulum. Member of the N1672 Group in the Dorado Cloud complex that includes N1559, N1672, N1688, N1796 and N1703.
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NGC 1560 = UGC 03060 = MCG +12-05-005 = CGCG 328-006 = FGC 71A = PGC 15488
04 32 48.9 +71 52 59
V = 11.4; Size 9.8x1.7; Surf Br = 14.3; PA = 23d

17.5" (2/20/95): fairly faint, very large, 6'x1', low surface brightness edge-on SSW-NNE. Broad weak concentration with no distinct core but there a central 2' brightening. A mag 13 star is embedded on the preceding side of the NNE extension. The galaxy appears to extend very faintly beyond this towards a mag 12 star further N. Another mag 13 star is superimposed at the SSW end and a brighter mag 11.5 star is just following the tip of this extension.

8" (1/1/84): very faint, fairly large, edge-on SSW-NNE, low even surface brightness. Appears as a ghostly streak.

Tempel's RA in list IX is 1 tmin preceding U03060 = M+12-05-005 = Z328-006. Incorrectly equated with Bigourdan's IC 2062 in RC2, UGC and CGCG. According to Harold Corwin IC 2062 is a faint star observed on the same night as N1560 at 04 32 02.7 +71 55 14 (2000).
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NGC 1561 = MCG -03-12-006 = Ho 75a/b = NPM1G -15.0227 = PGC 15005
04 23 01.1 -15 50 45
V = 14.4; Size 0.6x0.5; Surf Br = 12.9

17.5" (12/30/99): faint, very small, irregularly round, 0.4' diameter, small brighter center. Located 2' NE of mag 9 SAO 149593. Brightest of six faint galaxies with N1562, N1563 (7.0' NNW), N1564 (6.4' N), N1565 (8' NE) and IC 2063 (12' NNW).

17.5" (11/10/96): faint, small, round, weak concentration. Located 2.1' NE of a mag 9 star.

17.5" (2/8/91): very faint, small, round, broad mild concentration. Located 2' NE of a mag 8.8 SAO 149593. Brightest in a very faint group including N1563, N1564, N1565 and IC 2063.
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NGC 1562 = NPM1G -15.0224 = PGC 14956
04 21 47.6 -15 45 20
V = 14.3; Size 0.8x0.7; Surf Br = 13.5

17.5" (12/30/99): very faint, very small, round, 20" diameter, very little concentration. A mag 14.5 star is close W. First of six in the N1561 group (18' following).

17.5" (2/8/91): very faint, very small, round. A mag 15.5 star is 1' W. Located 20' W of the center of the N1561 group.
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NGC 1563 = NPM1G -15.0225 = PGC 15000
04 22 53.9 -15 43 58
V = 14.3; Size 0.4x0.3; Surf Br = 11.8

17.5" (12/30/99): this member of the N1561 group was a marginal object -- requiring averted vision and only glimpsed ~10% of the time as a 15" featureless knot just 1.7' WNW of N1564 and 7' NNW of N1561.

17.5" (2/8/91): Not found.

Discovered by Leavenworth (I). RNGC and MCG misidentify N1563 with IC 2063 = M-03-12-005 according to Corwin. The position of the group was given correctly by Howe. N1563 is not in MCG or RC3 and was not found in my 17.5" observation of N1561, N1562 and N1564. PGC equates N1563 with M-03-12-005 at this position but M-03-12-005 refers to IC 2063.
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NGC 1564 = NPM1G -15.0226 = PGC 15004
04 23 00.9 -15 44 20
V = 15.3; Size 0.5x0.4; Surf Br = 13.4

17.5" (12/30/99): very faint, very small, round, 20" diameter, low surface brightness. Two mag 13.5/14 stars are close NE. Located 6.4' due N of N1561 in a group. Forms a close pair with N1563 1.7' W.

17.5" (2/8/91): extremely faint, very small, round. A trio of mag 13/14 stars lie 2'-3' NE. Member of the N1561 group. Nearby N1563 not seen.
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NGC 1565 = MCG -03-12-007 = PGC 15015
04 23 23.4 -15 44 40
V = 14.2; Size 0.8x0.7; Surf Br = 13.4

17.5" (12/30/99): very faint, small, round, 30". This galaxy has a low surface brightness with no central brightening but may be the largest in the group. A mag 14 star lies 1.5' NE of center. Located 8' NE of N1561 in a group of faint galaxies (last of six).

17.5" (2/8/91): Not found.
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NGC 1566 = ESO 157-020 = LGG 114-003 = PGC 14897
04 20 00.4 -54 56 16
V = 9.7; Size 8.3x6.6; Surf Br = 13.9; PA = 60d

13.1" (2/19/04 - Costa Rica): this member of the Dorado Group and Seyfert galaxy is bright, large, elongated 3:2 ~N-S. With careful viewing the halo extends to ~3'x2'. A spiral arm is attached on the west side and curves towards the north beyond the main body of the galaxy. On the eastern side a low surface brightness arm is attached (on an E-W line with a mag 12 star close following the galaxy) and extends a little to the south on the eastern side of the main body. Mag 8.2 HD 27713 lies 5.4' NW of center and a mag 9.9 star lies in the field 9' W. I was surprised to see the spiral arms so clearly! N1581 lies 40' E.
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NGC 1568 = UGC 03032 = MCG +00-12-027 = CGCG 393-016 = II Zw 10 = VV 809 = PGC 15034
04 24 25.3 -00 44 47
V = 13.6; Size 1.1x0.8; PA = 135d

17.5" (2/1/92): fairly faint, fairly small, dominated by small bright core, fainter extensions NW-SE, faint halo. Two mag 12/13 stars are 1' NE and 1.5' NW. Double system with UGC 3031 = N1568a 1.3' WNW (not seen).
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NGC 1569 = UGC 03056 = MCG +11-06-001 = CGCG 306-001 = Arp 210 = VII Zw 16 = LGG 104-002 = PGC 15345
04 30 48.6 +64 50 56
V = 11.0; Size 3.6x1.8; Surf Br = 12.9; PA = 120d

17.5" (3/1/03): at 380x this is a bright, very elongated galaxy with an unusual asymmetric appearance, situated less than 1' S of a mag 9.5 star! Extended nearly 5:2 NW-SE, 2.0'x0.8'. The bright core is offset to the NW side of the glow with a tail extending SE, possibly bending at a slight angle to the core. Two stellar "nuclei" are visible in good seeing. The brighter "star" is embedded with the core, possibly just slightly N of center. A second fainter "star" is close SE, near the edge of the core and is visible intermittently. These "stars" are actually SSC's (luminous super-star clusters).

17.5" (1/12/02): very bright, elongated 5:2 WNW-ESE, 2.5'x1.1', high but irregular surface brightness with an asymmetric appearance. The very bright core is mottled and irregular and is offset to the NW side of the galaxy! At 380x, there are two stellar "nuclei" within this glow. The brighter stellar nucleus is fairly easy and a fainter stellar point is close SE. There is also a strong impression of a third stellar spot close W of the central nucleus. These faint "stars" are actually luminous super-star clusters, the most massive known type of star clusters (color image at http://www.lowell.edu/users/dah/papers/n1569hst.html). A mag 10 star is close off the N side, 1' from center and a mag 13 star is just off the SE end. N1569 is probably a member of the Maffei 1 - IC 342 group.

13.1" (1/18/85): very bright, elongated 2:1 WNW-ESE, high surface brightness, elongated bright core, mottling suspected. Located just 1' S of a mag 10 star.

8" (11/28/81): fairly bright, small, elongated. Located just south of a mag 9 star.
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NGC 1573 = UGC 03077 = MCG +12-05-008 = CGCG 328-009 = VII Zw 18 = PGC 15570
04 35 04.1 +73 15 45
V = 11.7; Size 1.9x1.3; Surf Br = 12.7; PA = 35d

17.5" (1/23/93): moderately bright, fairly small, elongated 3:2 SSW-NNE, gradually brighter halo, very small brighter core. A mag 10.5 star is just 2.2' E of core. Brightest in a group with CGCG 328-007 4.5' NW and UGC 3069 4.3' SW.
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NGC 1573A = UGC 03150 = MCG +12-05-020 = CGCG 328-021 = PGC 16052
04 48 26.6 +73 28 11
V = 13.5; Size 1.6x1.3; Surf Br = 14.2; PA = 165d

17.5" (1/23/93): very faint, moderately large, very diffuse, low even surface brightness. Difficult to view as located just 30" NE of mag 8.8 SAO 5310! This star is the fourth in a 7' line of equally spaced stars mag 8.5-9.5 oriented SW-NE.
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NGC 1575 = MCG -02-12-014 = N1577 = PGC 15090
04 26 20.6 -10 05 54
V = 12.2; Size 1.4x1.3; Surf Br = 12.7

17.5" (2/8/91): fairly faint, irregularly round, gradually increases to small bright core, possible faint stellar nucleus. Located 2' N of a mag 10.5 star and 13' SE of mag 6.9 SAO 149622.

Muller's RA (list II) is 0.4 tmin W of M-02-12-014. Independently found by Swift as NGC 1577 with the correct position (equated by Howe in IC 2 notes). See NGCBUGS for more of the story.
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NGC 1576 = MCG -01-12-007 = PGC 15089
04 26 18.8 -03 37 16
V = 13.5; Size 1.3x0.8; Surf Br = 13.4; PA = 125d

17.5" (2/1/92): fairly faint, small, slightly elongated 4:3 SW-NE, well-defined bright core, faint stellar nucleus. Almost at the midpoint of two mag 13 stars 1.2' SE and 1.5' WNW.
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NGC 1577 = N1575 = MCG -02-12-014 = PGC 15090
04 26 20.6 -10 05 54

See observing notes for N1575.

Discovered by Swift (III) whose position matches MCG -02-12-014. Muller also independently found this galaxy (poor RA) and it is listed as NGC 1575. MCG (+00-12-027) identifies this galaxy as NGC 1577.
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NGC 1579 = LBN 767 = Sh 2-222
04 30 14.3 +35 16 47
Size 12x8

18" (2/16/07): fairly bright reflection nebula at 220x, viewed unfiltered. The brightest portion is a fairly striking, roundish patch, ~1.5 diameter in the center of a triangular group of 6 stars. A mag 11.5 star lies 2' N with a faint star close south. Symmetrically placed on the opposite side of the central region is a pair of mag 13 stars. A wide pair of mag 12 stars are off the NE side. Faint, irregular haze spreads out from the bright patch towards the SW, extending due west to due south and increasing the size to 6'-7', though the borders of the fainter nebosity are not well defined. There was only a hint of the dust structure visible on images.

17.5" (3/2/02): this bright reflection nebula appears nearly 5' in diameter with a prominent, slightly elongated 1.5' central region. The haze is irregular extending outward from this knot with the borders seemingly marked by a half-dozen stars situated around the periphery including a mag 11 star 2' N, a wide pair of mag 11.5-12 stars 1.6' and 2.3' NE and a pair of mag 13 stars ~2.5' S. Nebulosity extends mostly west and southwest of the central mass with a very faint piece to the south.

13" (1/18/85): fairly bright, circular, fairly small, appears brightest at the following edge. Forms an equilateral triangle with two mag 11.5-12 stars off the N and NE edges both 2' from center.

8" (12/6/80): faint nebulosity, diffuse.
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NGC 1580 = MCG -01-12-011 = PGC 15189
04 28 18.4 -05 10 44
V = 13.7; Size 0.9x0.9; Surf Br = 13.3

17.5" (2/11/96): faint, fairly small, irregularly round, 50" diameter. Broad concentration with a brighter center but no well-defined core. A mag 15 star is just off the following end 48" from center and a mag 14 star is 1.4' WNW. There is an 30" pair of mag 12/13.5 stars ~3' SE. Located 10' NNE of mag 9 SAO 131233 at the edge of the 220x field and 1 degree W of the N1600 group.
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NGC 1581 = ESO 157-026 = LGG 114-004 = PGC 15055
04 24 44.9 -54 56 31
V = 12.9; Size 1.8x0.7; Surf Br = 13.0; PA = 80d

13.1" (2/19/04 - Costa Rica): very faint, small, elongated 5:2 E-W, ~0.6'x0.25', no noticeable concentration. This Dorado Group member is located 40' due E of the bright galaxy N1566.
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NGC 1582 = Cr 51 = OCL-407 = Lund 133
04 31 39 +43 50
Size 24

18" (11/26/03): at 115x, appears a very large, scattered field with a number of brighter stars. There are no denser regions of fainter stars to distinguish this as a cluster although the star density drops rapidly to the west (edge of Milky Way?). Most distinctive is a stream of bright stars which extends 20' SW of the cluster's position and includes a number of mag 8-10 stars. The string begins with mag 8.7 SAO 39581 and includes a 16" pair of mag 10 stars as well as mag 8.6 SAO 39578. The classification of this group as a true cluster is doubtful.
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NGC 1583 = ESO 551-008 = MCG -03-12-010 = NPM1G -17.0162 = PGC 15193
04 28 20.7 -17 35 44
V = 13.6; Size 0.9x0.8; Surf Br = 13.1; PA = 98d

17.5" (11/10/96): slightly brighter of a similar pair with N1584 located 5.0' NNW. Faint, small, round, 40" diameter.
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NGC 1584 = ESO 551-006 = NPM1G -17.0161 = PGC 15180
04 28 10.2 -17 31 24
V = 13.8; Size 0.8x0.7; Surf Br = 13.1; PA = 122d

17.5" (11/10/96): very faint, small, round, 30" diameter, low even surface brightness. Forms a pair with N1584 5.0' SSE. Collinear with a nice well-matched double star 6.5' NE and a mag 13 star 5.0' NE.
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NGC 1586 = UGC 03062 = MCG +00-12-036 = CGCG 393-027 = PGC 15331
04 30 38.2 -00 18 15
V = 13.2; Size 1.7x0.9; Surf Br = 13.5; PA = 155d

17.5" (2/1/92): fairly faint, fairly small, elongated 2:1 NNW-SSE. Bracketed by two very faint mag 14.5/15 stars close off the WNW end and 30" off the SSE end. A wide evenly matched mag 11 pair at 1.3' separation lies 7.5' NW and is collinear with the galaxy. Uncertain identification in the RNGC, UGC, CGCG.

This galaxy (U03062 = M+00-12-036 = Z393-027) is a poor match with d'Arrest's position of 04 30.2 -00 32 (2000), although Harold Corwin notes "d'Arrest's position quoted in the NGC is bad". U3062 is identified as N1586 in RNGC, UGC and CGCG but not MCG.

In CGCG corrections, Thomson states that this identification is incorrect as very close to d'Arrest's position is a very faint gx, IC 371, recorded by Bigoudan. But, Corwin claims that Bigourdan's position for IC 371 falls on a faint star. U03062 is by far the brighter galaxy, fits the NGC description of nearby stars but is 13' NE of the NGC position, so either ID is plausible. My visual observation was verified on the POSS at UC Berkeley.
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NGC 1587 = UGC 03063 = MCG +00-12-035 = CGCG 393-028 = Ho 76a = Mrk 616 = II Zw 12 = LGG 117-002 = PGC 15332
04 30 40.0 +00 39 43
V = 11.7; Size 1.7x1.5; Surf Br = 12.7; PA = 144d

17.5" (2/3/03): fairly bright, moderately large, slightly elongated SW-NE, 1.2'x1.0', well-concentrated with a very bright core and stellar nucleus. Forms a close pair with N1588 0.9' E. In a trio with N1589 12' N.

13" (12/22/84): moderately bright, small, almost round, small bright core. Forms a pair with N1588 1' E. N1589 lies 12' N. Located midway between 44 and 45 Tauri.
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NGC 1588 = UGC 03064 = MCG +00-12-037 = CGCG 393-028 = Mrk 616 = II Zw 12 = NPM1G +00.0155 = PGC 15340
04 30 43.7 +00 39 53
V = 12.9; Size 1.4x0.8; Surf Br = 13.0; PA = 175d

17.5" (2/3/03): fairly faint/moderately bright, fairly small, 0.6'x0.5', sharply concentrated with a very bright stellar nucleus. Smaller and fainter of close pair with N1587 just 0.9' W.

13" (12/22/84): faint, very small. Forms a close pair with brighter N1587 1' W.
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NGC 1589 = UGC 03065 = MCG +00-12-038 = CGCG 393-030 = PGC 15342
04 30 45.5 +00 51 52
V = 11.8; Size 3.2x1.0; Surf Br = 12.9; PA = 160d

17.5" (2/3/03): very nice moderately large edge-on 4:1 NNW-SSE, 1.3'x0.3'. Contains a bright core with faint extensions. In a trio with N1587/1588 12' S.

13" (12/22/84): moderately bright, edge-on 4:1 NNW-SSE, fairly small, small bright core. Forms a wide pair with N1587 12' S.
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NGC 1590 = UGC 03071 = MCG +01-12-008 = CGCG 419-014 = II Zw 13 = PGC 15368
04 31 10.3 +07 37 51
V = 13.7; Size 0.9x0.7; Surf Br = 13.0; PA = 90d

13.1" (11/29/86): faint, small, slightly elongated ~E-W. There is a trio of similar stars to the N with two mag 12.5 stars 2' NNE and 4.7' NW and a mag 11.5 star 4.4' N.
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NGC 1591 = ESO 484-025 = MCG -04-11-015 = PGC 15276
04 29 30.6 -26 42 47
V = 12.8; Size 1.2x0.8; Surf Br = 12.6; PA = 30d

17.5" (11/10/96): fairly faint, fairly small, elongated 3:2 SSW-NNE, very weak concentration. A mag 13 star lies 1.2' due W. Brightest and largest of three with ESO 484-G26 4.4' SE and ESO 484-28 10' SE.
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NGC 1592 = ESO 421-IG 002A/B = MCG -05-11-011 = VV 647 = AM 0427-273 = PGC 15292
04 29 40.8 -27 24 32
V = 13.7; Size 1.4x0.7; Surf Br = 13.4; PA = 96d

17.5" (2/3/03): faint, fairly small, elongated 2:1 E-W, 0.8'x0.4', fairly low even surface brightness. At moments, there appeared to be an extension or companion attached on the following side. On the DSS, this is an unusual (multiple?) galaxy with two off center knots or condensations, one on the E end! A perfect parallelogram of stars with sides 3'x1' lies 5' SE (brightest stars mag 10 on the south side).

John Herschel's position is off by 27' in declination and ESO (421-IG 002A/B) and MCG (-05-11-011) do not equate this galaxy with N1592, while RNGC lists N1592 as nonexistent.

Discovered by JH (h2645) and only observed once. Only faint stars were seen by Howe at the NGC position (IC 2 notes). RC3 identifies N1592 = E421-002 = M-05-11-011 although this galaxy is 27' S (exact match in RA) of h's position. As h gives a very uncertain dec in the Cape Catalogue this ID is possible though uncertain (not discussed in Corwin's NGC Bugs list). This galaxy is not identified as N1592 in MCG or ESO. Listed as nonexistent in Carlson and RNGC.
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NGC 1593 = N1608: = IC 2077 = U03082 = MCG +00-12-044 = CGCG 393-037 = NPM1G +00.0156 = PGC 15447
04 32 06.1 +00 34 02

See observing notes for N1608.

Discovered by Marth (m97). His position is exactly 1.0 tmin W of N1608 (same dec) and equated by Corwin. Thomson notes that Bigourdan's offsets for N1593 falls on a single star and he feels that N1593 refers to this star. Reinmuth identifies N1593 as "eF, vS, pR, vgvvlbM, vF** nf 2.5'. His description and position points to an object at 04 31 19.7 +00 29 51 (2000). This is only 12s E of Marth's position but also 4' S and appears to be a star on DSS.
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NGC 1594 = MCG -01-12-014 = NPM1G -05.0197 = IC 2075 = PGC 15348
04 30 51.6 -05 47 54
V = 13.0; Size 1.8x1.3; Surf Br = 13.8; PA = 100d

17.5" (2/11/96): fairly faint, fairly small, elongated 3:2 E-W, 1.2'x0.8'. Forms the E vertex of a near equilateral triangle with two mag 13/13.5 stars 2.0' NW and 2.3' WSW. A mag 14.5 star is just off the preceding edge 39" from center. Fairly smooth surface brightness except for a nearly stellar nucleus.

Discovered by Swift (V). His RA was 17s E of M-01-12-014. Howe's corrected position in the IC 2 notes is a perfect match with this galaxy. Bigourdan reobserved this galaxy and it also received the designation IC 2075 and MCG uses the IC designation. See NGCBUGS.
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NGC 1596 = ESO 157-031 = LGG 114-005 = PGC 15153
04 27 38.1 -55 01 40
V = 11.2; Size 3.7x1.0; Surf Br = 12.4; PA = 20d

13.1" (2/19/04 - Costa Rica): bright, moderately large, very elongated 7:2 SSW-NNE, 1.8'x0.5', contains a slightly bulging core and tapering extensions. Sharply concentrated with a very small bright core. Paired with N1602 2.9' SE in the Dorado Group of galaxies. N1617 lies 43' NE.
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NGC 1597 = MCG -02-12-032 = NPM1G -11.0163 = PGC 15374
04 31 13.5 -11 17 26
V = 13.9; Size 1.0x0.8; Surf Br = 13.6; PA = 95d

17.5" (2/3/03): faint, very small, elongated 5:4 ~E-W, 0.5'x0.4', slightly brighter core. A close double star lies 2' NW.
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NGC 1599 = MCG -01-12-016 = N1610? = PGC 15403
04 31 38.7 -04 35 18
V = 13.7; Size 0.9x0.8; Surf Br = 13.1

17.5" (2/1/92): faint, very small, round, slight central brightening. Located just 1.1' W of mag 9.1 SAO 131769. Member of the N1600 group with N1607 10' NE.
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NGC 1600 = MCG -01-12-017 = PGC 15406
04 31 39.9 -05 05 10
V = 10.9; Size 2.5x1.7; Surf Br = 12.4; PA = 15d

17.5" (2/1/92): bright, moderately large, elongated 4:3 N-S, broadly concentrated halo, almost stellar nucleus. Brightest in a large group with N1601 1.6' N, N1603 2.6' ESE and N1606 7' NE. Other members include N1599, N1604, N1607, N1609, N1611, N1612, N1613, IC 373. Located 12' SE of mag 7.8 SAO 131262 12' NW and 15' ESE of mag 9 SAO 131258.

13" (12/18/82): fairly bright, small, round, broad concentration.
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NGC 1601 = MCG -01-12-018 = NPM1G -05.0198 = PGC 15413
04 31 41.7 -05 03 37
V = 13.8; Size 0.6x0.3; Surf Br = 11.9; PA = 95d

17.5" (2/1/92): very faint, extremely small, round, very small bright core. Faintest of a close trio with N1600 1.6' S and N1603 2.9' SE.
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NGC 1602 = ESO 157-032 = LGG 114-006 = PGC 15168
04 27 54.4 -55 03 24
V = 13.0; Size 1.9x1.1; Surf Br = 13.6; PA = 83d

13.1" (2/19/04 - Costa Rica): very faint, fairly small, slightly elongated, 40" diameter, low surface brightness. Forms a pair with the prominent galaxy N1596 just 2.9' NW in the Dorado Group.
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NGC 1603 = MCG -01-12-019 = NPM1G -05.0199 = PGC 15424
04 31 49.9 -05 05 40
V = 13.8; Size 0.8x0.5; Surf Br = 12.7; PA = 115d

17.5" (2/1/92): very faint, very small, round. Last of a close trio with N1600 2.5' WNW and N1601 2.9' NW.
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NGC 1604 = MCG -01-12-020 = NPM1G -05.0201 = PGC 15433
04 31 58.6 -05 22 12
V = 13.5; Size 1.1x0.8; Surf Br = 13.2

17.5" (2/1/92): fairly faint, small, elongated 3:2 SW-NE. The halo brightens to a small bright core. Situated between two mag 11 stars 2.3' ESE and 2.8' WNW. Located at the S edge of the N1600 group. N1600 lies 17' N.
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NGC 1605 = Cr 52 = OCL-406 = Lund 134
04 34 52 +45 16.3
V = 10.7; Size 5

17.5" (1/23/93): at 220x this is a very faint cluster of 15 stars mag 13.5-14.5 in 4'-5' diameter. The resolved stars appear around the periphery forming an irregular oval outline. The central region is lacking in resolved stars but consists of unresolved haze. Mag 7.7 SAO 39630 is 10' ESE at the edge of the 220x field.
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NGC 1606 = MCG -01-12-022 = NPM1G -05.0202 = PGC 15443
04 32 03.3 -05 01 57
V = 15.1; Size 0.4x0.4; Surf Br = 13.0

17.5" (12/26/00): extremely faint, very small, round, ~15" diameter. Required averted and much harder to view than IC 373 which was just observed. Located 7' NE of N1600 and 4.5' W of mag 7.6 SAO 131278 within the large N1600 group.
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NGC 1607 = MCG -01-12-023 = PGC 15442
04 32 03.1 -04 27 37
V = 14.2; Size 1.1x0.5; Surf Br = 13.4

17.5" (2/1/92): very faint, small, round, low even surface brightness. Located 4.5' S of mag 7.9 SAO 131272. Member of the N1600 group with N1599 10' SW and N1609 10' NE.
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NGC 1608 = UGC 03082 = MCG +00-12-044 = CGCG 393-037 = NPM1G +00.0156 = IC 2077 = N1593: = PGC 15447
04 32 06.1 +00 34 02
V = 13.4; Size 1.6x0.6; Surf Br = 13.3; PA = 130d

17.5" (2/11/96): fairly faint, fairly small, elongated 3:2 NW-SE, 1.0'x0.6'. Contains a 30" brighter core with fainter extensions. A mag 12.5 star lies 1.8' N of center. Located 22' ESE of N1587/88 pair.

Discovered by Lord Rosse. The NGC position is 20s of RA E and 8.5' N of U03082 = M+00-12-044 = Z393-037 = NPM1G +00.0156 although the Birr Castle description clearly refers to this galaxy. The correct position was later given by Javelle as IC 2077 and UGC, MCG and CGCG use the IC designation instead of N1608. See Catalogue Corrections by Malcolm Thomson. Marth also observed this galaxy (m97 = N1593) but his position was exactly 1.0 tmin too far W. The equivalence with IC 2077 and N1593 is given in the ESGC identification list.
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NGC 1609 = MCG -01-12-025 = NPM1G -04.0199 = PGC 15480
04 32 45.1 -04 22 21
V = 14.2; Size 1.3x0.8; Surf Br = 14.1; PA = 170d

17.5" (2/1/92): faint, small, dominated by small bright core, fairly bright stellar nucleus, small faint extensions NNW-SSE. A mag 14 star is 40" NW. Located in the N1600 group with N1607 10' SW and N1611 7' NE.
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NGC 1610 = N1599?? = MCG -01-12-016 = PGC 15543
04 31 38.7 -04 35 18

See observing notes for N1599. The NGC identification is very uncertain.

Discovered by Leavenworth (II). Not found by Bigourdan. There is no galaxy at Leavenworth's position and RNGC identifies N1610 = NPM1G -04.0203 at 04 34 13.9 -04 41 59 (2000). This galaxy is not in MCG, RC3 or ESGC. Leavenworth's position is 1m 21 tsec W and 7' N of this galaxy (not an unusual error although the declinations are generally fairly accurate). Another possibility is N1610 = N1599 which is at the same declination but ~1 tmin of RA preceding Leavenworth's position. But Corwin notes this galaxy has a bright star 1.1' ENE which would probably have been mentioned by Leavenworth.

HC: NGC 1610 is probably one of the faint nebulae in the NGC 1600 group -- but which one? There is nothing at Leavenworth's position, and his description (m = 15.5, D = 0.2 arcmin; R, bMN) could match any of the several fainter members of the group.

Among the more likely candidates are NGC 1599, and RNGC 1610. N1599 is at the same declination and is just over a minute of time preceding the nominal place of N1610. However, it has a bright star just 1.1 arcmin east-northeast which Leavenworth would almost certainly have mentioned had he seen this galaxy. The RNGC identification is also possible, but is 7 arcmin south and 1.4 minutes of time following Leavenworth's place. Neither of these options is particularly compelling, but are still worth noting.
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NGC 1611 = MCG -01-12-029 = PGC 15501
04 33 05.9 -04 17 49
V = 13.0; Size 1.9x0.6; Surf Br = 13.0; PA = 103d

17.5" (2/1/92): faint, fairly small, very elongated 3:1 WNW-ESE, large brighter middle. Member of a quadruple subgroup (N1613 5' ENE, N1609 7' SW, N1612 7.5' NNE) within the N1600 group.
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NGC 1612 = MCG -01-12-030 = NPM1G -04.0200 = PGC 15507
04 33 13.1 -04 10 20
V = 13.0; Size 1.3x1.2; Surf Br = 13.3; PA = 40d

17.5" (2/1/92): very faint, small, round, very faint stellar nucleus. Faintest of three with N1613 6.5' SSE and N1611 7.5' SSW. Member of the N1600 group.
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NGC 1613 = MCG -01-12-031 = NPM1G -04.0201 = PGC 15518
04 33 25.3 -04 15 55
V = 14.1; Size 1.1x0.8; Surf Br = 13.8; PA = 135d

17.5" (2/1/92): fairly faint, small, slightly elongated 4:3 NW-SE, very small bright core, stellar nucleus. Forms a trio with N1611 5' WSW and N1612 6.5' NNW.
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NGC 1614 = MCG -01-12-032 = Mrk 617 = II Zw 15 = Arp 186 = PGC 15538
04 34 00.0 -08 34 44
V = 12.9; Size 1.3x1.1; Surf Br = 13.2; PA = 85d

17.5" (10/29/94): fairly faint, fairly small, elongated 4:3 SSW-NNE, 0.8'x0.6', broad concentration. A mag 13 star is 2.0' S of center.
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NGC 1615 = UGC 03096 = MCG +03-12-005 = CGCG 467-003 = PGC 15608
04 36 01.9 +19 57 03
V = 13.6; Size 1.2x0.7; Surf Br = 13.3; PA = 115d

17.5" (1/23/93): faint, very small, round, very small bright core, stellar nucleus. Forms the E vertex of an equilateral triangle with mag 7.1 SAO 94022 6' SW and mag 8.0 SAO 94021 5' NW!
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NGC 1617 = ESO 157-041 = PGC 15405
04 31 39.5 -54 36 08
V = 10.4; Size 4.3x2.1; Surf Br = 12.7; PA = 107d

13.1" (2/19/04 - Costa Rica): fairly bright, fairly large, elongated 2:1 WNW-ESE, 2.8'x1.4'. Well-concentrated with a bright 30" core which increases to a bright stellar or quasi-stellar nucleus! This member of the Dorado group is easily located 33' NW of mag 3.2 Alpha Doradus. Cradled by three mag 12 stars 4' WNW, 5' SSW and 6' SE. The N1596/1602 pair lies 43' SW.
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NGC 1618 = MCG -01-12-034 = PGC 15611
04 36 06.5 -03 08 56
V = 12.7; Size 2.3x0.8; Surf Br = 13.3; PA = 35d

17.5" (10/12/85): faint, fairly small, very elongated 3:1 SSW-NNE, weak concentration. First of three very elongated systems with N1622 8' ESE and N1625 18' SE. Located 13' NNW of Nu Eridani (V = 3.2). HCG 30 lies 19' NNE.
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NGC 1620 = UGC 03103 = MCG +00-12-052 = CGCG 393-046 = PGC 15638
04 36 37.3 -00 08 35
V = 12.3; Size 2.9x1.0; Surf Br = 13.3; PA = 25d

17.5" (1/23/93): moderately bright, moderately large, very elongated 7:2 SSW-NNE, 3.0'x0.8', only a weak concentration but has an irregular surface brightness and mottled appearance. A mag 14 star is at the NNE tip. Located 4.6' WSW of mag 8.9 SAO 131350.
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NGC 1621 = MCG -01-12-035 = NPM1G -05.0207 = N1626 = PGC 15626
04 36 25.0 -04 59 14
V = 13.5; Size 1.3x0.8; PA = 95d

17.5" (1/23/93): fairly faint, small, slightly elongated 4:3 E-W, increases to small bright core. Located 3.5' SE of a mag 10.5 star. N1627 lies 20' ENE.
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NGC 1622 = MCG -01-12-036 = NPM1G -03.0201 = PGC 15635
04 36 36.6 -03 11 20
V = 12.5; Size 3.6x0.7; Surf Br = 13.4; PA = 45d

17.5" (10/12/85): faint, elongated SW-NE, small bright core, stellar nucleus, faint elongated halo. This is the second the of three edge-on systems with similar N1618 8' WNW (also similar position angle) and N1625 10' SE. Located 11' NNE of Nu Eridani. HCG 30 lies 22' N.
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NGC 1623 = PGC 15591
04 35 32.4 -13 33 23
V = 14.7; Size 0.8x0.5; Surf Br = 13.6; PA = 15d

18" (1/21/04): very faint, extremely small, 15" diameter. A very faint superimposed star or stellar nucleus was intermittently visible. Member of Abell Galaxy Cluster 496. The identification or position in the RNGC is incorrect.

Stone's rough RA in list I is essentially correct (30s too large). Stone's sketch also positively identifies N1623 = PGC 1559. Not listed in MCG or RC3 but in ESGC. Incorrect identification in RNGC.
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NGC 1624 = OCL 403 = Ced 37 = LBN 722 = Sh 2-212 = Cr 53
04 40 37.2 +50 27 41
V = 10.4; Size 5x5

13.1" (12/22/84): fairly bright, round, compact glow surrounding a small group of at least five stars using a UHC filter.
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NGC 1625 = MCG -01-12-038 = PGC 15654
04 37 06.2 -03 18 12
V = 12.3; Size 2.1x0.5; Surf Br = 12.2; PA = 130d

17.5" (10/12/85): fairly faint, edge-on 4:1 NW-SE, 1.4'x0.3'. A mag 14 star is at the NW tip 0.7' from center. Third of three edge-on systems with N1622 10' NW and N1618 18' NW. Located 10' ENE of Nu Eridani.

13" (12/18/82): very faint, very elongated NW-SE.
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NGC 1626 = N1621 = MCG -1-12-35 = NPM1G -05.0207 = PGC 15626
04 36 25.0 -04 59 14

See observing notes for N1621.

Discovered by Leavenworth #397 in List II. His position is 48s E of N1621 and an exact match in declination. His mention of a "*8 np 12 sec" clinches the identification N1626 = N1621 although the star is fainter. Listed as identical to N1621 by Corwin and nonexistent in the RNGC. See NGCBUGS for more of the story.
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NGC 1627 = MCG -01-12-040 = PGC 15675
04 37 38.0 -04 53 15
V = 12.9; Size 1.6x1.5

17.5" (1/23/93): faint, fairly small, 1.5'-2' diameter, low even surface brightness. A mag 11 star is 2.7' SSW. N1628 lies 10' N and N1621 20' WSW. The photographic descriptions of N1627 and N1628 are reversed in the RNGC.

Discovered by Swift (VI) as the southern member of a pair with N1628. His position is just 1' too far N. The new descriptions for N1627 and N1628 are reversed in the RNGC. The declinations appear correct although the "Y" coordinates are also reversed. See RNGC Corrections #1 and WSQJ 4/80.
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NGC 1628 = MCG -01-12-039 = PGC 15674
04 37 36.1 -04 42 53
V = 14.2; Size 1.8x0.4; PA = 171d

17.5" (1/23/93): fairly faint, fairly small, edge-on 4:1 NNW-SSE, 1.5'x0.4', weak concentration. A mag 12 star is 2' WNW. N1627 lies 10' S. The photographic descriptions of N1627 and N1628 are reversed in the RNGC.

Swift's position (VI) is a perfect match with M-01-12-039. The new descriptions for N1627 and N1628 are reversed in RNGC. See comments for N1627.
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NGC 1630 = ESO 551-019 = NPM1G -19.0190 = PGC 15659
04 37 15.5 -18 54 06
V = 14.1; Size 0.7x0.5; Surf Br = 12.8; PA = 140d

17.5" (12/26/00): very faint, small, round, 25" diameter, low even surface brightness.
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NGC 1631 = ESO 551-021 = MCG -03-12-017 = PGC 15705
04 38 24.2 -20 38 59
V = 13.4; Size 1.4x0.9; Surf Br = 13.5; PA = 44d

17.5" (1/23/93): faint, small, slightly elongated, 0.8' diameter. A mag 13.5 star is 1.9' W of center. Located 6' ENE of mag 7.1 SAO 169624.
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NGC 1632 = IC 386 = NPM1G -09.0208 = PGC 15769
04 39 58.5 -09 27 23
V = 14.4; Size 1.0x0.6; PA = 40d

17.5" (1/23/93): very faint, small, round, weak concentration, low surface brightness. Located 3.1' SSW of a mag 10.5 star. IC 382 lies 30' WSW. Misidentified in the RNGC as IC 382.

Muller's position (II) is 0.8 tmin W of NPM1G -09.0208. This galaxy was not found by Bigourdan but Javelle later rediscovered it and gave the correct position as IC 386. N1632 is misidentified as IC 382 = M-02-12-049 in RNGC (Muller's position is between the two galaxies but closer to IC 386). U2000 and PGC have the correct identification. See ICBUGS.
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NGC 1633 = UGC 03125 = MCG +01-12-014 = CGCG 419-023 = LGG 120-012 = Ho 79a = PP 22: = PGC 15774
04 40 09.1 +07 20 58
V = 13.5; Size 1.0x0.9; Surf Br = 13.1

13.1" (1/18/85): faint, round, fairly small, faint knot involved. Forms a very close pair with N1634 just 0.8' S. Situated among a group of brighter stars including mag 8.7 SAO 111965 5.4' SSW, a mag 10 star 3' SW and a mag 11.5 star 2.4' NNW.
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NGC 1634 = MCG +01-12-015 = CGCG 419-022 = Ho 79b = PGC 15775
04 40 09.8 +07 20 19
V = 14.1; Size 0.4x0.3; Surf Br = 11.9; PA = 109d

13.1" (1/18/85): forms a double system with N1633. Very faint, extremely small. Appears like a nebulous knot almost in contact close south of N1633. Situated within a group of brighter stars.
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NGC 1635 = UGC 03126 = MCG +00-12-063 = CGCG 393-060 = PGC 15773
04 40 07.8 -00 32 51
V = 12.4; Size 1.4x1.3; Surf Br = 13.0; PA = 5d

17.5" (1/23/93): moderately bright, fairly small, round, 1' diameter, increases to very small prominent core. An easy mag 13 double star at 24" separation is just 1.0' NW. Located 3.5' WSW of a mag 10 star and 7' S of mag 9 SAO 131395.
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NGC 1636 = MCG -01-12-042 = PGC 15800
04 40 40.1 -08 36 29
V = 12.0; Size 1.2x0.8; PA = 0d

17.5" (1/23/93): faint, fairly small, elongated 3:2 N-S, 1.0'x0.6', slightly brighter along major axis. A mag 13.5 star is off the NE edge 1.0' from center. Located 6.0' NW of a mag 10 star.
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NGC 1637 = MCG +00-12-068 = CGCG 393-066 = UGCA 93 = PGC 15821
04 41 28.0 -02 51 29
V = 10.8; Size 4.0x3.2; Surf Br = 13.5; PA = 15d

13.1" (12/18/82): fairly faint, large, diffuse, elongated 4:3 SW-NE, weak concentration. A mag 13 star is 2.1' NE of center. Located midway between Mu Eridani (V = 4.0) 1¡ ESE and 51 Eridani (V = 5.2) 1¡ WNW.

8"(10/4/80): faint, oval, fairly small.
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NGC 1638 = UGC 03133 = MCG +00-12-069 = CGCG 393-068 = PGC 15824
04 41 36.3 -01 48 33
V = 12.0; Size 2.0x1.5; Surf Br = 13.1; PA = 70d

18" (11/22/03): moderately bright, moderately large, elongated 5:3 WSW-ENE, 1.5'x0.9'. Sharply concentrated with a bright 30" core which increases to the center. UGC 3127 lies 22' SW.

13" (12/18/82): fairly faint, fairly small, elongated 3:2 WSW-ENE. Evenly lit halo with a very small bright core.

There is an obvious typo in the position of N1638 in RNGC as the RA is given as 0h 01.3m.
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NGC 1640 = ESO 551-027 = MCG -03-12-018 = PGC 15850
04 42 14.5 -20 26 04
V = 11.7; Size 2.6x2.0; Surf Br = 13.3; PA = 45d

13.1" (1/18/85): fairly faint, elongated WSW-ENE, bright core, faint stellar nucleus. Forms an equilateral triangle with two mag 11.5 stars 2.0' SSE and 2.0' WSW of center.
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NGC 1642 = UGC 03140 = MCG +00-12-072 = CGCG 393-073 = PGC 15867
04 42 55.0 +00 37 08
V = 12.6; Size 1.8x1.6; Surf Br = 13.6; PA = 175d

13.1" (11/29/86): fairly faint, fairly small, slightly elongated, fairly diffuse, slightly brighter small core.
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NGC 1643 = MCG -01-13-001 = PGC 15891
04 43 43.9 -05 19 08
V = 12.8; Size 1.1x1.1; Surf Br = 12.9; PA = 30d

17.5" (12/23/89): fairly faint, fairly small, round, weak concentration. Located 7' NNE of a mag 9.5 star. Forms a pair with N1645 10' SE.
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NGC 1645 = MCG -01-13-002 = NPM1G -05.0213 = PGC 15903
04 44 06.4 -05 27 56
V = 12.2; Size 2.3x1.2; Surf Br = 13.2; PA = 95d

17.5" (12/23/89): faint, very small, slightly elongated, almost even surface brightness. Forms a pair with N1643 10' NW. Located 7.8' ESE of a mag 9.5 star. Appears fainter than V = 12.2.
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NGC 1646 = MCG -01-13-003 = II Zw 22 = PGC 15914
04 44 23.5 -08 31 54
V = 13.0; Size 1.6x1.1; PA = 155d

17.5" (1/23/93): fairly faint, small, elongated 2:1 NW-SE, prominent small bright core, overall fairly high surface brightness. Forms the S vertex of isosceles triangle with N1648 4.4' NE and 56 Eridani (V = 5.9) 4.8' WNW which detract from viewing! A mag 11 star lies 2.1' E.
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NGC 1647 = Cr 54 = Mel 26 = OCL-457
04 46.0 +19 04
V = 6.4; Size 45

13.1" (1/11/86): about 80 stars in a scattered cluster including several bright stars. Very large, bright. Includes a mag 8.5/8.9 double star at 33" separation in the center. Also includes many faint double stars.
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NGC 1648 = MCG -01-13-004 = Arp 89 = NPM1G -08.0183 = PGC 15920
04 44 34.7 -08 28 44
V = 14.5; Size 0.4x0.3

17.5" (1/23/93): extremely faint, very small, round, requires averted vision. A mag 11 star 3.3' SSW forms the vertex of a right triangle with N1646 4.2' SW and 56 Eridani (V = 5.9) 7.4' WSW.
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NGC 1650 = MCG -03-13-001 = PGC 15931
04 45 11.5 -15 52 12
V = 11.9; Size 2.2x1.2; Surf Br = 12.8; PA = 170d

17.5" (12/23/89): faint, very small, slightly elongated, bright core. Located 11' E of a mag 10 star at the edge of the 220x field.
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NGC 1651 = ESO 055-SC030 = S-L 7
04 37 31.7 -70 35 07
V = 12.7; Size 2.5

18" (7/9/02 - Magellan Observatory, Australia): this LMC globular appeared fairly faint, moderately large, round, 1.7' diameter with a weak concentration. There was no resolution except for a mag 13.5 star off the SE edge, 1' from the center. Located 34' NW of mag 5.5 Mu Mensae.
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NGC 1653 = UGC 03153 = MCG +00-13-003 = CGCG 393-002 = PGC 15942
04 45 47.3 -02 23 34
V = 12.0; Size 1.5x1.5; Surf Br = 12.8

13" (11/29/86): moderately bright, moderately large, round, broadly concentrated halo. The N1654/N1657 pair lies 19' N.
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NGC 1654 = UGC 03154 = CGCG 394-003 = PGC 15943
04 45 48.4 -02 05 02
V = 13.4; Size 0.7x0.7; Surf Br = 12.6

17.5" (1/23/93): fairly faint, fairly small, round, broad mild concentration. Brighter of a pair with N1657 4.6' E. Located 10' WSW of mag 9.0 SAO 131483.

13" (11/29/86): faint, small, oval slightly elongated ~E-W. N1657 4.6' E not seen.
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NGC 1656 = MCG -01-13-005 = PGC 15949
04 45 53.3 -05 08 12
V = 12.8; Size 1.4x0.9; Surf Br = 12.9; PA = 55d

17.5" (12/23/89): faint, small, elongated WNW-ESE. A mag 14.5 star is at the N edge 0.4' from center. Located 3.1' S of a mag 10 star.
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NGC 1657 = UGC 03156 = MCG +00-13-004 = CGCG 394-005 = PGC 15958
04 46 07.2 -02 04 38
V = 13.8; Size 1.2x0.8; Surf Br = 13.7; PA = 150d

17.5" (1/23/93): very faint, fairly small, round, low almost even surface brightness. Located midway between N1654 4.6' W and mag 9.0 SAO 131483 5.1' E.
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NGC 1659 = NGC 1677 = MCG -01-13-006 = PGC 15977
04 46 29.8 -04 47 22
V = 12.5; Size 1.6x1.1; Surf Br = 13.0; PA = 40d

13.1" (12/18/82): fairly faint, fairly small, elongated SW-NE.
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NGC 1661 = UGC 03166 = MCG +00-13-008 = CGCG 394-009 = PGC 16000
04 47 07.6 -02 03 16
V = 13.2; Size 1.4x0.9; Surf Br = 13.3; PA = 35d

13.1" (12/23/89): faint, small, almost round, bright core. A line of four mag 12-13.5 stars is 1.5' S oriented E-W with length 1.7'. In a group with N1654 and N1657.
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NGC 1662 = Cr 55 = OCL-470 = Lund 141
04 48 29 +10 55.8
V = 6.4; Size 20

17.5" (12/9/01): striking group of ~40 stars within 15' including a number of mag 9 stars. Many of the brighter stars are arranged in a "boat" shape with the bottom of the boat consisting of a string oriented NW-SE. In the middle is a mast, perpendicular to the longer stream of stars. The "mast" primarily consists of a bright quadruple (one with a fainter companion) of mag 8-10 stars (h684) with sides less than 1'. This group may be a scattered group of bright stars.
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NGC 1663 = OCL-461 = Lund 142
04 49 24 +13 09.1
Size 8

17.5" (2/3/03): at 140x, ~20 stars are resolved in a scattered 6'-7' group. Includes a shallow arc of three brighter mag 10 stars on the SW side which may not be cluster members. Most of the mag 12-13 stars are concentrated in a 3' subgroup on the N side. Stands out reasonably well in the field although this group has been listed as a "possible open cluster remnant" - Bica et al., 2001A&A...366..827B. The Lynga position, DSFG, N2000, SC 2000 and RNGC all place the cluster too far west by ~45 tsec of RA.

N1663 = VIII 7 = GC 906 was discovered by WH on 10 Feb 1783: "A Cl. of L. and S. sc. st. not rich." There is no grouping at his offset of 4m 0s preceding, and 1d 7' south of 4 Orionis. But Brent Archinal found that a concentration of stars (~30 stars in 9') which is 1 tmin following H's position (see e-mail of 7/26/96). The Lynga position, DSFG, N2000, SC2000 and RNGC all place the cluster too far west at 04 48.6 +13 09 and the symbol is plotted incorrectly on U2000.

In Sue French's column of 02/05, she mentions this may be an "open cluster remnant. Such remnants are the residue of old clusters that have lost most of their members."
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NGC 1664 = Cr 56 = Mel 27 = OCL-411
04 51 05 +43 40.6
V = 7.6; Size 18

13.1" (1/18/85): 40-45 stars, striking, rich, many faint double stars and chains. A long string of stars to the S leads to mag 7.5 SAO 39807 on the SE edge. Appears rich in the center.
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NGC 1665 = MCG -01-13-009 = NPM1G -05.0218 = PGC 16044
04 48 17.1 -05 25 39
V = 13.2; Size 1.9x1.3; Surf Br = 14.0; PA = 50d

17.5" (12/23/89): faint, fairly small, oval SW-NE, weak concentration.
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NGC 1666 = MCG -01-13-010 = NPM1G -06.0173 = PGC 16057
04 48 32.8 -06 34 12
V = 12.6; Size 1.4x1.1; Surf Br = 13.0; PA = 35d

13.1" (1/18/85): faint, small, round, faint stellar nucleus. Forms a wide pair with N1667 15' N.
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NGC 1667 = MCG -01-13-013 = N1689: = PGC 16062
04 48 36.9 -06 19 13
V = 12.1; Size 1.8x1.4; Surf Br = 12.9; PA = 20d

13.1" (1/18/85): moderately bright, fairly small, elongated 3:2 ~N-S, weak concentration. Forms a wide pair with N1666 15' N.
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NGC 1670 = MCG +00-13-016 = CGCG 394-017 = PGC 16107
04 49 42.5 -02 45 37
V = 12.7; Size 2.1x1.0; Surf Br = 13.4; PA = 112d

13.1" (11/29/86): faint, small, round, bright core. A mag 14 star is close off the ESE edge 0.9' from center.
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NGC 1672 = ESO 118-043 = AM 0444-592 = LGG 119-002 = PGC 15941
04 45 42.5 -59 14 50
V = 9.7; Size 6.6x5.5; Surf Br = 13.4; PA = 170d

24" (4/5/08 - Magellan Observatory, Australia): this gorgeous barred spiral appeared very bright and large with the main body elongated E-W, ~3.5'x2.0'. An obvious spiral arm is attached at the east end of the E-W bar and hooks to the north, wrapping around a star to the NE of the bar. Three additional fainter stars are sandwiched to the west of the brighter star, between the arm and the bar. A second arm begins to emerge on the west side, barely sweeping towards the south, but then quickly terminates. So the second "arm" is really more of a hooking appendage off the west end. The central bar itself is sharply concentrated with a dramatic, brilliant nucleus, ~25" diameter, that increases gradually to the center.

13.1" (2/19/04 - Costa Rica): fairly bright, fairly large, elongated 3:2 ~E-W, ~3'x2'. Sharply concentrated with a very small, bright core, ~20" diameter, and a large oval halo. Spiral structure was evident as an ill-defined extension or haze off the NE side, though I could not resolve this spiral arm clearly. Situated directly between two mag 9 stars 10' SW and 6.5' ENE. This galaxy is a member of the Dorado group which includes N1515, N1533, N1536, N1543, N1546, N1553, N1566, N1574, N1596, N1617 and IC 2056. Possible additional members include N1559, N1602, N1672, N1688, N1703 and N1705.

18" (7/8/02 - Magellan Observatory, Australia): this striking spiral galaxy appeared fairly bright and large, ~4' diameter, sharply concentrated with a very bright core. Clearly emerging from the east side of the oval core or bar was a spiral arm which curled north and wrapped around two stars to the NW of the core. The extension on the west side was just a very faint, diffuse haze on the SW side without arm structure. A mag 9 star is 6.5' ENE and a mag 6.5 star (HD 30790) is 13' NE.
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NGC 1677 = NGC 1659 = MCG -01-13-006 = PGC 15977
04 46 29.8 -04 47 22
V = 12.5; Size 1.6x1.1; Surf Br = 13.0; PA = 40d

See description for NGC 1677.

According to Harold Corwin, NGC 1677 = NGC 1659 with a 5 minute error in its RA. The same error was made with NGC 1689 which was found on the same evening. Swift's (uncorrected) position (list V) is 0.4 tmin E and 6' N of MCG -01-13-019 which some sources (and originally Corwin) identify with N1677. Roberts (MNRAS, Vol LXIII, p302) later recorded this galaxy based on a photographic plate with an exact position and MCG -01-13-019 is identified as IC 2099 in MCG.
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NGC 1678 = MCG +00-13-019 = CGCG 394-020 = PGC 16179
04 51 35.3 -02 37 24
V = 13.2; Size 1.1x0.8; Surf Br = 12.8; PA = 70d

13.1" (11/29/86): faint, small, slightly elongated, small bright core. A mag 12 star is close off western edge 1.0' from core. N1670 lies 28' WSW.
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NGC 1679 = ESO 422-001 = MCG -05-12-004 = UGCA 96 = PGC 16120
04 49 55.5 -31 58 01
V = 11.5; Size 2.7x2.0; Surf Br = 13.2; PA = 150d

17.5" (1/23/93): moderately bright and large, 2' diameter, irregularly round, brighter core. Unusual appearance as four stars are close including a mag 11 star at the south edge, two mag 13 stars at the E and W edges and a mag 13.5 star at the N edge. This is a fairly bright galaxy for low elevation viewing.
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NGC 1681 = MCG -01-13-026 = PGC 16195
04 51 50.3 -05 48 13
V = 12.7; Size 1.5x1.1; Surf Br = 13.1; PA = 40d

17.5" (12/23/89): fairly faint, small, round, bright core. A mag 12 star is at the W edge 0.8' from center and a mag 12.5 star is 1.2' E.
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NGC 1682 = MCG -01-13-028 = NPM1G -03.0219 = PGC 16211
04 52 19.7 -03 06 20
V = 11.8; Size 1.0x1.0; Surf Br = 11.7

17.5" (12/23/89): fairly faint, small, slightly elongated, bright core, stellar nucleus. Located 4.0' N of mag 8.0 SAO 131557. In a group with N1684 3.0' E and N1683 5' N.
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NGC 1683 = NPM1G -03.0218 = PGC 16209
04 52 17.6 -03 01 29
V = 14.8; Size 0.9x0.4; Surf Br = 13.5; PA = 165d

17.5" (12/23/89): extremely faint, very small, low even surface brightness. Among an elongated group of mag 14 stars including a wide pair 1.5' W and a wide pair 2' NW. Located 5' N of N1682 and faintest in a group of four including N1684 and N1685.
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NGC 1684 = MCG -01-13-031 = PGC 16219
04 52 31.0 -03 06 20
V = 11.7; Size 2.3x1.5; Surf Br = 12.9; PA = 90d

17.5" (12/23/89): fairly faint, fairly small, oval ~E-W, broadly concentrated halo. Brightest of four with N1682 3' W, N1683 6' NW and N1685 9' N. Mag 8.0 SAO 131557 lies 3' SSW.
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NGC 1685 = MCG -01-13-032 = PGC 16222
04 52 34.3 -02 56 58
V = 13.7; Size 1.4x0.9; Surf Br = 13.8; PA = 135d

17.5" (12/23/89): very faint, small, slightly elongated NW-SE, almost even surface brightness. A mag 14 star is off the SE edge 1.0' from center. N1684 lies 9.5' S.
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NGC 1686 = MCG -03-13-019 = PGC 16239
04 52 54.5 -15 20 49
V = 13.7; Size 1.4x0.4; Surf Br = 12.9; PA = 27d

17.5" (2/2/02): very faint, small, round, 20" diameter, low even surface brightness. Elongation not seen, so I only viewed the brighter core region as this galaxy is nearly edge-on SSW-NNE. A mag 13 star follows by 2'.
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NGC 1687 = ESO 361-013 = MCG -06-11-005 = PGC 16166
04 51 21.3 -33 56 21
V = 13.9; Size 1.3x0.5; Surf Br = 13.3; PA = 40d

17.5": very faint, fairly small, elongated 3:2 SW-NE, 0.6'x0.4'. Very small brighter core at moments but the overall surface brightness is low and the object required concentration for a steady view. Based on the apparent size, I probably viewed the brighter central region and missed the outer spiral extensions. Located 7' NE of mag 8.9 SAO 195348.
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NGC 1688 = ESO 119-006 = LGG 119-003 = PGC 16050
04 48 23.5 -59 47 57
V = 12.0; Size 2.4x1.9; Surf Br = 13.4; PA = 177d

13.1" (2/19/04 - Costa Rica): fairly faint to moderately bright, elongated 3:2 NNW-SSE, 1.5'x1.0', broad weak concentration but no other details were evident. This barred spiral is a member of the Dorado group with N1672 38' NW and N1703 34' E. Located 30' ESE of mag 5.3 Kappa Doradus.
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NGC 1689 = N1667 = MCG -01-13-013 = PGC 16062
04 48 36.9 -06 19 13

See observing notes for N1667.

Swift's RA (V) is exactly 5.0 tmin E of Stephan's N1667 = M-01-13-013. Not found by Howe and questioned if = N1667 which has the same declination. Not found by Carlson (repeated in RNGC). Identified as identical to N1667 by Harold Corwin.
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NGC 1690 = UGC 03198 = MCG +00-13-027 = CGCG 394-029 = PGC 16289
04 54 19.2 +01 38 25
V = 13.9; Size 1.1x1.1; Surf Br = 13.9

13.1" (11/29/86): very faint, very small, round. Several faint stars are nearby including a two mag 13.5 star at the W edge 0.6' from center and 1.2' NNE. Located 7.2' NE of mag 6.6 SAO 112191.
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NGC 1691 = UGC 03201 = MCG +01-13-009 = Mrk 1088 = PGC 16300
04 54 38.3 +03 16 04
V = 12.0; Size 1.7x1.5; Surf Br = 12.9; PA = 85d

13.1" (11/29/86): faint, very small, bright stellar nucleus or star superimposed.
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NGC 1692 = ESO 552-021 = MCG -03-13-029 = A0453-20 = NPM1G -20.0184 = PGC 16336
04 55 23.7 -20 34 16
V = 13.0; Size 1.3x1.2; Surf Br = 13.4; PA = 5d

17.5" (2/14/99): faint, moderately large, round, broad concentration to a 30" core. With averted vision the halo extends to at least 1' diameter with ill-defined edges. Located 13' SE of mag 8.9 SAO 169878. Misidentified in the RNGC.

Discovered by Stone (list I). His very rough discovery position to the nearest minute of RA is 04 51.5 -20 38 (1950). The RNGC identifies N1692 as a faint galaxy at GSC position 04 52 22.5 -20 37 58 (1950), with a trio of faint stars close south. The SGC and ESO identify N1692 with the larger and brighter galaxy E552-G21 = M-03-13-029 at 04 53 14.1 -20 38 59 (1950). Although Stone's position is closer to the galaxy identified as N1692 in the RNGC, Corwin has examined Stone's discovery sketch and confirms that N1692 = E552-G21 = M-03-13-029. This places N1692 roughly 2 tmin of RA following Stone's position, a typical error found in his list. This galaxy is not identified as N1692 in SGC or ESO-LV and identified as A0453-20 in RC2. Listed in RNGC Corrections #5.
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NGC 1694 = MCG -01-13-035a = NPM1G -04.0215 = PGC 16335
04 55 16.8 -04 39 10
V = 14.7; Size 1.3x0.9; Surf Br = 14.7; PA = 30d

17.5" (2/14/99): fairly faint, small, slightly elongated SW-NE, 40"x30", very small brighter core. Situated within a group of brighter stars including a mag 10.5 star 3.4' ESE. Located 28' WNW of N1700.
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NGC 1699 = MCG -01-13-039 = PGC 16390
04 56 59.6 -04 45 25
V = 12.9; Size 0.9x0.6; Surf Br = 12.1; PA = 160d

17.5" (12/23/89): very faint, small, slightly elongated N-S, even surface brightness. Located just 4' ENE of mag 7.8 SAO 131619 and bracketed by two mag 13 stars 1.8' SW and 1.1' NE of center. Forms a pair with brighter N1700 6.7' S.
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NGC 1700 = MCG -01-13-038 = PGC 16386
04 56 56.2 -04 51 56
V = 11.2; Size 3.3x2.1; Surf Br = 13.3; PA = 90d

17.5" (12/23/89): bright, fairly small, oval 4:3 E-W, very bright core. Located 6' SSE of mag 7.8 SAO 131619. Forms a pair with N1699 6.7' N.

13" (12/18/82): fairly bright, small, round, small bright core. Located 20' NNE of 62 Eridani (V = 5.5).
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NGC 1701 = ESO 422-011 = MCG -05-12-010 = PGC 16352
04 55 51.2 -29 53 01
V = 12.8; Size 1.2x0.9; Surf Br = 12.8; PA = 137d

17.5": faint, fairly small, irregularly round, 45" diameter. Weakly concentrated with no well-defined core. A mag 11 star is close off the SE side (1.3' from center) and detracts slightly. A very faint pair of mag 15 stars at 18" separation is less than 2' S.
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NGC 1703 = ESO 119-019 = LGG 119-005 = PGC 16234
04 52 52.6 -59 44 36
V = 11.3; Size 3.0x2.6; Surf Br = 13.4

13.1" (2/19/04 - Costa Rica): fairly faint, moderately large, oval 3:2 ~N-S, 1.5'x1.0'. Unusual appearance as a mag 9 star is superimposed SE of the core and the galaxy extends to the NW of this bright star which is a close double. The outer halo is diffuse and fades into the background. Located 34' E of N1688 in the Dorado Group.
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NGC 1705 = ESO 158-013 = PGC 16282
04 54 14.1 -53 21 38
V = 12.4; Size 1.9x1.4; Surf Br = 13.3; PA = 50d

24" (4/5/08 - Magellan Observatory, Australia): at 260x appears moderately bright and large, elongated 4:3 SW-NE, 1.2'x0.9', broad concenctration. This starburst galaxy contains a super-star cluster (SSC 1750-A) that appears as a 14th magnitude "star" offset to the west of center. In good seeing at 350x using the 13mm Ethos and a 2x barlow, the SSC just west of center was easily visible and generally appeared stellar, though at moments there was an impression it spanned a couple of arcseconds. A short string of four faint stars is collinear to the NW. Located 30' ENE of the bright double star Iota Pictoris (5.6/6.4 at 12"). N1705 is a nearby blue dwarf starburst galaxy at a distance of 17 million light years.
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NGC 1707 = IC 2107
04 58 21.1 +08 14 19
Size 0.5

17.5" (2/14/99): this is a compact group of four mag 13.5-14.5 stars within 30". Easily picked up at 220x and three close stars visible. At 280x, this multiple star is cleanly resolved in moments of good seeing. Listed as nonexistent in RNGC.

Discovered by JH (h338). Described as "a resolved nebula or a small round group of very small stars, 30" diameter. GSC shows a pair of very close stars 30 tsec W of the h's position. The brighter mag 13.5 star is at 04 58 21.1 +08 14 19 (J2000). Identified as four stars by Corwin (see NGCBUGS). Listed as nonexistent in RNGC.

This object was also observed by Bigourdan as B381 = IC 2107 and described as "cl, vF, vS, R" and the position is an exact match with these 4 stars.
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NGC 1708
05 03 26 +52 52.5
Size 20x12

18" (11/26/03): at 115x, this is a huge, triangular group of ~80 stars, roughly 20'x12', extended N-S with the base of this triangle on the south side and the vertex at the N end. Surprisingly, this scattered group is fairly well detached in the field and appears visually to be a cluster. Includes a number of mag 10.5-11.5 stars. The group is unconcentrated and most of the stars are situated along the perimeter with two large starless interior regions (larger one on the south side).

Discovered by JH (h337): "v Loose, pRi, fills field, the largest *10m, mixed magnitudes." The mag 10 star in h's description appears to be 30 tsec further E at 05 03 26.3 +52 52 31 (J2000). Listed as a T7 OC in RNGC. Mentioned by Walter Scott Houston 1/76 and 9/89.
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NGC 1709 = MCG +00-13-054 = CGCG 394-058 = NPM1G -00.0168 = PGC 16462
04 58 44.0 -00 28 42
V = 14.2; Size 0.9x0.7; Surf Br = 13.5; PA = 10d

13.1" (11/29/86): very faint, very small. A mag 13 star is close to the WNW edge just 0.8' from center. Forms a pair with N1713 2.7' ESE.
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NGC 1710 = MCG -03-13-037 = IC 2108 = PGC 16396
04 57 17.0 -15 17 20
V = 13.2; Size 1.3x1.1; Surf Br = 13.4; PA = 15d

17.5" (12/3/88): fairly faint, small, round, weak concentration. A mag 12 star is off the SE edge 1.2' from center.

Discovered by Leavenworth (I). Ormond Stone's corrected position matches MCG -03-13-037. MCG identifies this galaxy as IC 2108 (from Bigourdan). See NGCBUGS.
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NGC 1712 = ESO 056-SC011 = S-L 60 = LMC N79
04 50 59 -69 24.5
Size 4x3

18" (7/10/05 - Magellan Observatory, Australia): first of three clusters with nebulosity including N1722 + IC 2111 4' NE and N1727 8' NE. At 128x it appeared as an irregularly shaped, 4' nebulous haze just north of an attractive mag 10.7/11.5 double star (17"). A half dozen faint stars are embedded in the haze besides the two brighter stars at the south edge. This is a young LMC cluster.

18" (7/9/02 - Magellan Observatory, Australia): this is the first of three nebulous clusters with N1722 3.9' NE and N1727 7.7' NE. N1712 appears as a fairly large knotty region of stars and possible weak nebulosity, ~4' diameter. A mag 10.7/11.5 double (separation 17") is at the south edge.
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NGC 1713 = UGC 03222 = MCG +00-13-056 = CGCG 394-059 = PGC 16471
04 58 54.5 -00 29 20
V = 12.7; Size 1.4x1.2; Surf Br = 13.3; PA = 45d

13.1" (11/29/86): fairly faint, fairly small, almost round, faint halo gradually brightens. Forms a pair with N1709 2.7' WNW.
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NGC 1714 = ESO 085-EN008 = LMC N4A = S-L 64
04 52 06.5 -66 55 25
Size 1.1

18" (7/9/02 - Magellan Observatory, Australia): at 128x, surprisingly bright, high surface brightness knot, ~30" diameter with a brighter core. A mag 11 star is 1' NW. Forms a close pair with N1715 just 1' N in the NW corner of the LMC.
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NGC 1715 = ESO 085-EN009 = LMC N4B
04 52 10.2 -66 54 27
Size 1.1

18" (7/9/02 - Magellan Observatory, Australia): faint, small, low surface brightness glow, ~45" diameter. Located just 1' NNE of brighter N1714 and 1.3' NE of a mag 11 star in the NW portion of the LMC.
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NGC 1716 = ESO 552-034 = MCG -03-13-038 = PGC 16434
04 58 13.3 -20 21 49
V = 13.2; Size 1.4x1.1; Surf Br = 13.6; PA = 20d

17.5" (1/20/90): very faint, small, slightly elongated, low even surface brightness. A mag 13 star is 2.5' N.
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NGC 1718 = ESO 085-SC010 = S-L 65
04 52 25.6 -67 03 09
V = 12.3; Size 2.0

18" (7/9/02 - Magellan Observatory, Australia): this LMC cluster appeared at 128x as a fairly faint, round, 1' diameter, well-defined knot with no resolution. Located 8' SSE of N1714 and 6' N of a mag 9 star.
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NGC 1719 = UGC 03226 = MCG +00-13-060 = CGCG 394-063 = Ho 83a = LGG 120-026 = PGC 16501
04 59 34.4 -00 15 38
V = 13.6; Size 1.1x0.3; Surf Br = 12.3; PA = 102d

17.5" (2/22/03): fairly faint, fairly small, edge-on 4:1 ~E-W, 0.8'x0.2', faint stellar nucleus. A mag 15 star is superimposed on the SW edge. A mag 13 star is 1.7' NW.

13" (11/29/86): fairly faint, very small, elongated ~E-W. A mag 14.5 star is at the west end (possibly NGC 1717).
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NGC 1720 = MCG -01-13-041 = PGC 16485
04 59 20.5 -07 51 32
V = 13.1; Size 1.8x1.3; Surf Br = 13.9; PA = 95d

13.1" (12/18/82): fairly faint, moderately large, elongated E-W. Forms a pair with N1726 7' NE. Located 4.8' S of mag 8.1 SAO 131659. Imprecise RA in the RNGC.

d'Arrest's position matches M-01-13-041. The RNGC RA is 26 tsec too far W.
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NGC 1721 = MCG -02-13-027 = VV 699 = PGC 16484
04 59 17.4 -11 07 08
V = 12.3; Size 2.5x1.4; Surf Br = 13.5; PA = 120d

17.5" (12/3/88): first of four in a group. Fairly faint, small, slightly elongated, broadly concentrated halo. A mag 14 star is off the NE side 1' from the center. In a close trio with N1725 1.6' SE and N1728 2.5' ESE with N1723 8.5' NNE.
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NGC 1722 = ESO 056-SC012
04 51 43 -69 23.9

18" (7/10/05 - Magellan Observatory, Australia): in a small group of LMC clusters with nebulosity including N1727 and N1712. At 128x appears as a fairly faint, irregular hazy region with a few stars resolved and a small, bright knot (IC 1211). Good response to the UHC filter. Located to the SW of N1727 by 4'. This is a very young open cluster with an unevolved main sequence.

18" (7/9/02 - Magellan Observatory, Australia): the second of a trio of LMC clusters and nebulosity at 128x and UHC filter. At the core is a small, bright 15" knot = IC 2111 and surrounding this is a larger 2'-3' group of faint haze and some stars. N1727 lies 4.5' NE and N1712 3.9' SW.
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NGC 1723 = MCG -02-13-029 = PGC 16493
04 59 25.8 -10 58 51
V = 11.7; Size 3.2x2.2; Surf Br = 13.7; PA = 40d

17.5" (12/3/88): brightest in a group with a trio N1721, N1725 and N1728 about 8' S. Fairly faint, fairly small, slightly elongated, small bright core. Sandwiched between a mag 10 star 2.0' NNW and a mag 11 star 1.3' S. An additional mag 10 star lies 2.9' due E.
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NGC 1724 = OCL-405 = Lund 1121
05 03 33 +49 29.5
Size 1

18" (3/19/04): this asterism consists of only a trio of mag 11-12 stars at separations of 21" and 29". Located 5' WSW of mag 8.4 HD 32212. A few other mag 8-9 stars are in the same field. Also a chain of 5 mag 12-13 stars is located ~7' E and is certainly more distinctive than this trio of stars.

Discovered by Rumker. His position corresponds with a small trio of mag 11/12 GSC stars at a central position of 05 03 33 +49 29.5 (2000). Karl Reinmuth also described N1724 as "3 pF st; BD +49d1292 nff." There are several bright stars within 10'. Considered a doubtful OC by Lynga (Listed as OCL-405) and nonexistent in RNGC.
Alister Ling only found a wide triple star.
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NGC 1725 = MCG -02-13-028 = VV 699 = PGC 16488
04 59 22.8 -11 07 57
V = 12.3; Size 1.9x1.2; Surf Br = 13.0; PA = 20d

17.5" (12/3/88): second of three in a close trio. Faint, fairly small, elongated ~N-S, small bright core, faint stellar nucleus. Located midway between N1721 1.6' NW and N1728 1.3' NE.
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NGC 1726 = MCG -01-13-042 = PGC 16508
04 59 41.9 -07 45 19
V = 11.7; Size 1.5x1.1; Surf Br = 12.1; PA = 0d

13.1" (12/18/82): fairly faint, small, compact, small bright core, slightly elongated. A mag 12 star is just off the S edge 0.8' from center. Forms a pair with N1720 7' SW. Located 4.8' ENE of mag 8.1 SAO 131659.
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NGC 1727 = ESO 056-SC014 = S-L 67 = LMC N79E
04 52 11.5 -69 20 13
Size 2.8x2

18" (7/10/05 - Magellan Observatory, Australia): fairly bright, fairly large, irregular patch, ~2.5'x1.5', with at least a half-dozen stars mag 13 stars resolved. This LMC cluster with nebulosity responds well to a UHC filter at 128x. A small extension is visible to the SE (identified in SIMBAD as KMHK 187) increasing the size to ~3.5'x1.5'. In a group with N1722 4' SW and N1712 7.5' SW. Located 4' N of mag 8.5 HD 31722. This is a very young open cluster with an unevolved main sequence similar to nearby N1722.

18" (7/9/02 - Magellan Observatory, Australia): at 128x and UHC filter this is a fairly large elongated patch of nebulosity, ~3.5' diameter with a group of mag 12-13 stars superimposed. A smaller detached piece of nebulous haze, ~1' diameter, is close SE. This is the 3rd (and 4th) in a chain of objects with N1722 4.5' SW and N1712 8' SW. A mag 8.5 star (HD 31722) is 4' SSE.
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NGC 1728 = MCG -02-13-030 = VV 699 = PGC 16495
04 59 27.7 -11 07 22
V = 12.9; Size 1.8x0.9; Surf Br = 13.3; PA = 177d

17.5" (12/3/88): last of a trio with N1725 1.3' SW and N1725 2.5' W. Fairly faint, fairly small, very elongated 3:1 N-S, small bright core.
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NGC 1729 = MCG -01-13-043 = PGC 16529
05 00 15.5 -03 21 06
V = 12.3; Size 1.9x1.4; Surf Br = 13.2; PA = 30d

17.5" (12/23/89): fairly faint, fairly small, oval SSW-NNE. A mag 11 star is close off the E end 1.0' from center and a mag 12.5 star is 1.1' N of center.
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NGC 1730 = MCG -03-13-043 = IC 2113 = PGC 16499
04 59 31.8 -15 49 25
V = 12.3; Size 2.2x1.0; Surf Br = 12.5; PA = 94d

17.5" (12/3/88): fairly faint, fairly small, oval ~E-W. There is possibly an extremely faint star at the E end [verified on DSS]. Forms an obtuse angle with mag 8.7 SAO 150054 5' NW and mag 9.0 SAO 150066 7' ENE.
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NGC 1731 = ESO 085-SC012 = S-L 82
04 53 29.5 -66 55 30
Size 8

18" (7/9/02 - Magellan Observatory, Australia): at 128x this is a large region of nebulosity and scattered stars, 6'-7' diameter involving a mag 10.5/11.5 double star (h3710 = 10.7/12.7 at 12") and a number of fainter stars.
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NGC 1733 = ESO 085-SC013 = S-L 85
04 54 04.9 -66 40 57
Size 1.2

18" (7/9/02 - Magellan Observatory, Australia): this LMC cluster appeared as a round knot, ~25" diameter with a fairly even surface brightness. Easy to located as situated just 3.4' E of mag 6.5 HD 31754 on the NW side of the LMC.
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NGC 1735 = ESO 085-SC015 - S-L 86
04 54 20.2 -67 06 04
Size 1.8x1.5

18" (7/9/02 - Magellan Observatory, Australia): at 128x this LMC cluster appeared as a very elongated, very knotty string, ~1.2' in length and consisting of several mag 12-14 stars in a tight chain. N1747 is 6.5' SE and N1731 12' NW.
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NGC 1738 = ESO 552-049 = MCG -03-13-054 = PGC 16585
05 01 46.7 -18 09 28
V = 12.9; Size 1.3x0.7; Surf Br = 12.6; PA = 38d

17.5" (1/20/90): fairly faint, fairly small, oval SW-NE, even surface brightness. Contact pair with N1739 at the S end.
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NGC 1739 = ESO 552-050 = MCG -03-13-055 = PGC 16586
05 01 47.4 -18 10 02
V = 13.5; Size 1.4x0.7; Surf Br = 13.3; PA = 105d

17.5" (1/20/90): extremely faint, very small, round. Attached at the S end of N1738.
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NGC 1740 = MCG -01-13-046 = NPM1G -03.0222 = PGC 16589
05 01 54.8 -03 17 47
V = 12.6; Size 1.5x1.1; Surf Br = 13.0; PA = 125d

17.5" (12/23/89): fairly faint, small, oval SW-NE, small bright core. A mag 12 star is at the SW edge 0.5' from center. N1753 lies 10' ESE.
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NGC 1741 = MCG -01-13-045 = Arp 259 = VV 524 = HCG 31A = PGC 16574
05 01 37.9 -04 15 33
V = 12.5; Size 1.4x0.7; Surf Br = 12.4; PA = 70d

17.5" (2/8/97): brightest in HCG 31 (merged system with HCG 31C). Fairly faint, fairly small, elongated 2:1 ~E-W after extended viewing, bright core. Located 0.9' NW of a mag 12 star. N1741 has an irregular appearance and is intermittently partially resolved with a faint "knot" = HCG 31C visible with concentration at the W end. IC 399 is 2.3' SE but not a member of the HCG.

13" (11/29/86): faint, small, round. A mag 12 star is 0.9' SE of center. This is a double system and brightest in HCG 31. IC 399 lies 2.3' SE (not seen).
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NGC 1744 = ESO 486-005 = MCG -04-12-029 = PGC 16517
04 59 57.6 -26 01 19
V = 11.1; Size 8.1x4.4; Surf Br = 14.9; PA = 168d

13.1" (1/18/85): weak central brightening, a faint double star at 20" separation is at the north edge.

13.1" (12/22/84): fairly faint, fairly large, very diffuse, elongated 5:2 ~N-S, 5'x2', fairly even surface brightness. Two mag 14 stars are at the N edge 2.5' from the center with a total of three or four faint stars superimposed.
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NGC 1746 = Cr 57 = Mel 28 = OCL-452
05 03 50 +23 46.1
Size 42

17.5" (2/22/87): very bright, very large. Spread out overall but locally rich in faint stars to the south of two mag 8 stars on the NE side. Includes two main subgroups, N1750 and N1758, and several mag 7.5-8.5 stars. Apparently this is a random clump in the Milky Way and not a true cluster. N1750 consists of two dozen stars on the SW side. It appears as a fairly large oval oriented N-S with a void in the center and includes a nice mag 9.1/9.1 pair at 20". N1758 is a richer subgroup close NE (though probably unrelated physically) with about two dozen stars. This roundish group is bracketed by two mag 8.0/8.5 stars oriented N-S and a mag 7 star close E. Includes five mag 13 stars at the E side.

13" (12/22/84): about 100 stars in 20' field. The brightest mag 7 star at the south edge and there are many nearby bright stars.
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NGC 1747 = ESO 085-SC016 = LMC N9 = S-L 98
04 55 11 -67 10.1

18" (7/9/02 - Magellan Observatory, Australia): at 128x and UHC filter, this LMC nebulous cluster appeared as a fairly large, low surface brightness glow, ~4' diameter encasing a mag 9.7 star (HD 32034). Without the filter the cluster consists of a number of mag 12 and fainter stars which huddle around the bright star. N1735 lies 6.5' NW. On the DSS, the emission component is a nearly complete large bubble of 5'-6' in diameter (open on the NE end) with the bright star in the interior to the SW of center.
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NGC 1749 = ESO 056-SC026 = S-L 93
04 54 56.0 -68 11 22
Size 1.2

18" (7/9/02 - Magellan Observatory, Australia): extremely faint, very small glow, ~20" diameter. Located 2' NW of N1755.
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NGC 1750
05 04 00 +23 38.7
Size 20

17.5" (1/19/91): prominent subgroup of two dozen stars within N1746 on the SW side. Fairly large, oval outline oriented N-S, void in center. Includes a nice double star 9.1/9.1 at 20". The N1758 cluster is close NE (though probably unrelated physically). Modern catalogues apply N1746 to the entire cluster (see description), although N1750 (from William Herschel) and N1746 (from d'Arrest) are either identical or just parts of the same cluster.

13": group of fainter stars, just SE of open cluster N1746.

Discovered by WH (VIII 43). The NGC position is a perfect match for this subgroup of N1746, although Corwin has suggested that possibly WH made a 10' error in the declination in which case N1750 is identical to N1746 instead of a subgroup. Reinmuth claims this to be the central group in a very large cluster also containing N1746 and N1758.

In an 02/05 S&T article, James Kaler mentions that "N1750 and N1758 are probably two different clusters separated along our line of sight by 500 light years, but they appear to fall almost directly atop each other"
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NGC 1752 = MCG -01-13-047 = PGC 16600
05 02 09.4 -08 14 27
V = 12.4; Size 2.6x0.8; Surf Br = 13.1; PA = 70d

17.5" (12/8/90): fairly faint, moderately large, very elongated 3:1 WSW-ENE, even surface brightness. A pair of mag 11.5 stars are 2' NE (50" separation WNW-ESE) and a fainter mag 12.5 star is 3.8' NE. Located 10' WSW of mag 7.8 SAO 131718.
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NGC 1753 = MCG -01-13-048 = PGC 16610
05 02 32.1 -03 20 35
V = 14.7; Size 1.6x1.0; Surf Br = 15.1; PA = 15d

17.5" (12/23/89): extremely faint, fairly small, low even surface brightness. A close double star mag 13/15 is 3' SE. N1740 lies 10' WNW.
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NGC 1755 = ESO 256-SC028 = S-L 99
04 55 14.7 -68 12 20
V = 9.9; Size 2

18" (7/9/02 - Magellan Observatory, Australia): bright, compact cluster, round, 1.5' diameter, brighter core, no resolution. Forms a pair with much fainter N1749 2' NW.
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NGC 1758 = OCL-453 = Lund 150
05 04 42 +23 46.9
Size 10

17.5" (1/19/91): about two dozen stars visible at 100x. Moderately large, roundish group comprising one of the subgroups of N1746 on the E side. Located between two mag 8.0/8.5 stars with a mag 7 star close E. Includes five mag 13 stars at the E side. The larger N1750 group is close SW also within N1746.
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NGC 1760 = ESO 085-EN19 = LMC N11F
04 56 44 -66 31.6

13.1" (2/17/04 - Costa Rica): very faint, small, elongated 1' strip just 3' south of N1761 with one or two stars barely resolved.
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NGC 1761 = ESO 085-SC18 = S-L 122
04 56 38 -66 28.7

13.1" (2/17/04 - Costa Rica): this rich group of very faint stars is located just south of the south end of the HII region/cluster N1763. On the west side is a quasi-stellar mag 10 object and the cluster is elongated SW-NE, 2'x1'. On the west side of the brighter star is another small group of faint stars and haze which may be a continuation of the cluster.
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NGC 1762 = UGC 03238 = MCG +00-13-067 = CGCG 394-073 = PGC 16654
05 03 37.0 +01 34 25
V = 12.6; Size 1.7x1.1; Surf Br = 13.1; PA = 175d

13.1" (11/29/86): faint, small, oval ~N-S. A mag 13 star is superimposed on the E side.
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NGC 1763 = ESO 085-EN20 = IC 2115 = IC 2116:
04 56 49 -66 24.6
Size 5x3

13.1" (2/17/04 - Costa Rica): this emission nebula and cluster is set in fascinating field of several clusters and HII regions including N1761, N1769, N1773. The nebula is fairly bright, large, very elongated WSW-ENE, 4'x2'. A few stars are superimposed on the nebulosity. The roughly oval outline is irregular and the HII region appears brighter on the WSW side near a rich group of stars at the WSW tip. A couple of mag 11 stars are close off the NE end. IC 2115 and IC 2116 comprise the western and eastern portion of this object. After viewing this group of objects, the LMC which was well past the meridian disappeared behind some low clouds.
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NGC 1767 = ESO 056-SC031 = S-L 120 = LMC N94A?
04 56 27.3 -69 24 08
Size 1

18" (7/10/05 - Magellan Observatory, Australia): at 218x, this compact LMC cluster appeared bright, small, round, ~25" diameter, containing a very small bright core and an overall high surface brightness. Forms the western vertex of a triangle with N1782 7.4' E and N1772 9.5' SSE. Just 2' N, I noticed a very faint and small, round cluster, ~15" diameter (verified as Shapley-Lindsay 123).
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NGC 1768 = ESO 056-SC032 = S-L 127
04 57 02.7 -68 14 54
Size 0.7

18" (7/9/02 - Magellan Observatory, Australia): at 128x, this LMC cluster appeared fairly faint, small, 0.7' diameter. It seemed to consist of a chain of faint knots of stars. Located 10' ESE of N1755.
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NGC 1769 = ESO 085-EN23 = IC 2116?
04 57 45 -66 27.8

13.1" (2/17/04 - Costa Rica): fairly bright HII region in a fascinating group with several clusters and nebulae. Appears fairly large, round, 2' diameter with a single mag 11 at the center. Situated 6' SE of the cluster/HII region N1763 and a similar distance NNE of N1760.
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NGC 1770 = S-L 130 = IC 2117 = LMC N91
04 57 17 -68 24 39
Size 3x2

18" (7/9/02 - Magellan Observatory, Australia): this LMC object is an interesting mix of a star cluster and associated nebulosity, with the nebulosity mostly on the south side (= IC 2117). Includes a mag 10 star near the center and a number of mag 11-12 and fainter stars. The stars are mostly on the north side of the nebulosity with several in small clumps.
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NGC 1772 = ESO 056-SC33 = S-L 128
04 56 54.1 -69 33 24

18" (7/10/05 - Magellan Observatory, Australia): fairly bright, fairly small, irregularly round, 40"x35". Sharply concentrated with a bright, 15" core. Three faint stars are resolved on the south side of the cluster and one on the north side. Forms the southern vertex of a triangle with LMC clusters N1767 9.5' NNW and N1782 11' NNE.
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NGC 1773 = ESO 085-EN25
04 58 11 -66 21.6

13.1" (2/17/04 - Costa Rica): this HII region is the furthest NE in a group of HII regions and clusters. Appears fairly faint, fairly small, 1'-1.5' diameter with a couple of stars or a knot near the center. Located 9' ENE of N1763 and a similar distance NNE of N1769.
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NGC 1778 = Cr 58 = OCL-429 = Lund 152
05 08 06 +37 01.4
V = 7.7; Size 7

17.5" (2/1/92): about 50 stars mag 10-15 in a 15' field. Most stars are arranged in two rows oriented NW-SE with a dark lane between. Fairly scattered overall, includes several double stars. There is a nice double star 10/10 at 15" with two mag 13 stars near and 4' SE is a close striking double star h3266 = 9.9/11.1 at 8". A fairly rich clump is at the SE end of cluster.

8": 20 stars mag 10 and fainter in a 6' field, small, elongated NW-SE, nice double star 10/10. Includes a string of mag 10-11 star to the N.
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NGC 1779 = MCG -02-13-041 = PGC 16713
05 05 18.0 -09 08 50
V = 12.1; Size 2.3x1.3; Surf Br = 13.1; PA = 135d

17.5" (12/8/90): fairly faint, fairly small, small well-defined fairly bright oval core elongated 3:2 NW-SE, very faint oval halo.
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NGC 1780 = ESO 553-001 = MCG -03-13-070 = PGC 16743
05 06 20.7 -19 28 00
V = 13.7; Size 0.9x0.5; Surf Br = 12.8; PA = 84d

17.5" (1/20/90): very faint, very small, round. A mag 13 star is 1.4' NNE.
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NGC 1781 = N1794 = E553-007 = MCG -03-14-002 = PGC 16788
05 07 55.0 -18 11 24

See observing notes for N1794.

Discovered by WH (III 268). N1781 = III 268 is identical to Leavenworth's N1794 although H's RA for N1781 was 3.0 tmin too far W. Caroline Herschel's position was correct (given in the NGC notes). In the IC 2 notes, Dreyer agrees that N1781 = N1794. In this case, N1781 should takes historical precedence. RNGC incorrectly identifies N1781 as M-03-13-071 = E553-002. See NGCBUGS.
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NGC 1782 = ESO 056-SC36 = S-L 140
04 57 51.5 -69 23 38

18" (7/10/05 - Magellan Observatory, Australia): viewed at 228x, this bright LMC cluster was fairly small, round, 40" diameter, strongly concentrated with a bright 15" core. Several faint stars huddle very near or are resolved around the edges. Forms the NE vertex of a triangle with two other LMC clusters - N1767 7.4' W and N1772 11' SSE.
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NGC 1783 = ESO 085-SC29 = S-L 148
04 59 08.7 -65 59 18
V = 10.9; Size 3

13.1" (2/17/04 - Costa Rica): moderately bright, fairly large, round, 2.0' diameter, fairly smooth surface brightness. Appears to be a globular cluster as it is well-detached in the field with a fairly crisply defined edge, increasing to a brighter 1' core. N1805 lies 20' ESE.
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NGC 1784 = MCG -02-13-042 = PGC 16716
05 05 27.0 -11 52 18
V = 11.7; Size 4.0x2.5; Surf Br = 14.0; PA = 105d

17.5" (12/3/88): moderately bright, moderately large, oval 3:2 ~E-W, bright core. Situated in a group of brighter stars including a mag 11.5 star 3.0' E and a mag 12.5 star 1.3' NNE of center. Located 14' SE of mag 7.5 SAO 150123.

8" (10/13/81): faint, moderately large, diffuse. A mag 7 star is in the field to the NW.
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NGC 1787 = ESO 085-SC31
05 00 07 -65 45.8
V = 10.9; Size 23

13.1" (2/17/04 - Costa Rica): large cloud of stars, 15'-20' in size, over an extensive haze of unresolved stars. 40-50 mag 11-13 stars are visible at 105x within the cluster. N1783 is located 15' S.

Discovered by JH (h2731) in LMC. His single observation placed this cluster at 05 00 17.3 -65 50 33 (2000). His description "p Rich cl of S stars which fills field" appears to described the entire 20'-25' association HW 15 which includes N1783 and SL 178.

The RNGC and N2000.0 position is 04 59.1 -65 44 (2000). This position is from Lucke and Hodge's "A Catalogue of Stellar Associations in the Large Magellanic Cloud",Astron. J., v. 75, pp. 171-175, and corresponds with the NW portion of the association. ESO and Morel incorrectly place N1787 at 05 01 42 -65 49.4 but this corresponds with SL 178 at the E edge of the association.
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NGC 1788 = LBN 916
05 06 53.2 -03 20 27
Size 8x5

18" (1/1/08): very interesting, bright reflection nebula at 175x. Two brighter stars are involved in the brightest portion of the nebula with a mag 10 star (very unequal double) at the NW end. An oval glow extends ~4'x2.5' to the SE and contains a bright "knot" that surrounds a mag 11.5 star on the SE side. Two fainter stars are embedded within the glow and form a rhombus with the brighter stars at opposite ends. The SW edge of the main body has a sharper edge (due to dust). Surrounding this region are faint extensions that significantly increase the total size to ~8x6'. Towards the SE, dim haze can be seen as far as a 2' pair of mag 12.5 stars. Broad, wispy extensions appears to feather off to the NE for ~6' with additional faint haze to the south. The entire complex is bounded by several mag 8-9 stars forming a striking star field.

17.5" (2/9/02): at 144x this is a bright reflection nebula involving two mag 10 and 11.5 stars. The nebulosity is irregularly bright in a 4'x3' region elongated NW-SE and locally very bright in a knot surrounding the mag 11.5 star near the SE end. Enhanced by a Deep Sky filter at low power. The brighter mag 10 star ~2' NW has a faint companion and is also encased in the glow as well as a couple of other fainter stars. A faint extension fans out to the NE from the mag 11 star and some haze is suspected to the south, increasing the size to ~7' and involving a few additional stars. N1788 is located within a bright trapezoid consisting of three mag 8.5-9 stars and a mag 10 star (sides of 9'-13')

17.5" (12/23/89): bright, fairly large, locally very bright surrounding a mag 12 star on the south end. This star appears slightly nonstellar as difficult to separate from bright haze. Extends NW to include a mag 10 star and three other faint stars are involved in the brightest portion. Very faint nebulosity also extends to N and further E.

8" (12/6/80): moderately bright reflection nebula, large, brightest in center, two stars involved, extends to E.
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NGC 1792 = ESO 305-006 = MCG -06-12-004 = LGG 127-001 = PGC 16709
05 05 14.0 -37 58 47
V = 10.2; Size 5.2x2.6; Surf Br = 12.9; PA = 137d

13.1" (2/20/04 - Costa Rica): at 105x appears as a bright, large oval ~2:1 NW-SE, 3.2'x1.6'. Broad concentration to a large bright core and then sharply concentrated with a bright 15" nucleus. The surface brightness is irregular with a mottled texture. A faint star is just preceding the WNW tip. At 166x, the galaxy appears brighter along the major axis with some areas of lower surface brightness giving a hint of spiral structure! A mag 14 star is preceding. Brightest in a group with N1808 40' NE.

17.5" (1/31/87): bright, large, elongated 2:1 NW-SE, 3'x1.5', pretty diffuse. Two faint mag 14.5 stars are superimposed. Appears brighter along the western side

8" (1/1/84): moderately bright, moderately large, slightly elongated.

8" (11/28/81): fairly faint, round, moderately large, diffuse.
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NGC 1793 = ESO 056-SC043 = S-L 163
04 59 38 -69 33.5
V = 12.4; Size 1.3

18" (7/10/05 - Magellan Observatory, Australia): at 228x, this LMC open cluster appeared fairly faint, fairly small, round, 35" diameter with an even surface brightness and no sign of resolution. A triangle of mag 11 stars is preceding in the field. Forms a pair with N1801 6' SE.
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NGC 1794 = ESO 553-007 = MCG -03-14-002 = NGC 1781 = PGC 16788