13: this bipolar PN appeared fairly bright and prominent using a
Daystar 300 filter although from Northern California the viewing elevation
was very low! Under these conditions, IC 4406 appeared as a fairly small
smooth disc, roughly 35" in diameter and E-W extensions were not seen. No
central star was seen at 214x although a mag 13.5 star was visible just off
the west edge. - Steve Gottlieb
From further south, this is a real showpiece! Through a friend's 20-incher
at the Texas Star Party, it had a mottled texture and a peculiar boxy shape,
like a coffin, with squared corners and 3:1 E-W elongation. - Jim Shields
NGC 6210 in Hercules 16h44.5m +23d48'
17.5" (5/27/00): beautiful bluish oval at 220x, elongated 4:3 E-W, 0.4'x0.3'.
At 380x, there appears to be a very small fainter halo. At 500x, the narrow
outer envelope is more evident and is elongated in the direction of the major
axis, increasing the size to ~30"x20".
13: very bright, extremely high surface brightness, blue, takes very high
power. Mag 12.5 central star not seen.
Minkowski's Butterfly (M2-9) in Ophiuchus 17h05.6m -10d09'
17.5: picked up a low power but best viewed at 380x. The faint
central star is cleanly resolved with two thin "jets" extending N-S, roughly
15" on either side of the star. The nebulosity dims slightly near the
central star but is not detached. This unusual bi-polar object looks more
similar to a fairly faint edge-on galaxy than a PN although the tips of the
extensions do not noticeably taper. No response to filtration.
13: at 166x appears as a moderately bright, very elongated planetary but
does not respond positively to OIII or Daystar 300 filters! The central star
is visible at 214x. A small group of stars including a mag 12 star lies 5' S.
Classified as a bipolar PN or possible proto-PN. - Steve Gottlieb
17.5: this bi-polar proto-planetary is the subject of an amazing Hubble image.
This is a showpiece object in a larger scope, with a surprising amount of structure
visible. The bright central star is separated from its two flame-like jets by darker gaps.
- Jim Shields
Bug Nebula (NGC 6302) in Scorpius 17d13.8m -37d06'
17.5" (6/30/00): at 280x (unfiltered) the Bug Nebula is a remarkable, high
surface brightness object, elongated 3:1 WSW-ENE, ~2.0x0.7'. The intensely
bright 10" core appears elongated SW-NE and is offset to the east of center.
A quasi-stellar nucleus sharpens to a stellar point when the seeing steadies.
The western wing is longer and is nearly split at the midpoint by a dark
slash oriented N-S with a brighter condensation at the west end. The shorter
eastern wing is more pinched and just past its midpoint there is a kink and
it angles towards the SE.
13: bright, fairly small, elongated E-W, very high surface brightness.
Subtle structure but the western extension is notably longer, brighter and
cut by a dark lane. The eastern extension bends slightly N just E of
center.
Cheerio Nebula (NGC 6337) in Scorpius 17h22.3m -38d29'
17.5" (6/30/00): very pretty annular PN at 280x, ~45" and set in a rich star
field. A mag 12 star is superimposed on the inner edge of the NE rim and an
extremely faint star is symmetrically placed at the SW edge. The darker hole
is 20"-25" diameter and perfectly circular. The outer rim appears
irregularly lit.
13: at 166x with a UHC filter appears fairly faint, fairly small, roundish.
Slightly darker center (annular) with averted vision although low contrast
with rim. No central star seen.
NGC 6369 in Ophiuchus 17h29.3m -23d46'
17.5" (6/30/00): at 500x the "Little Gem Nebula" has a beautiful annular
appearance with a 25-30" halo perforated by a 12" dark hole. The northern
rim is noticeably brighter with a nearly stellar spot near its center.
13: beautiful ring at 214x and UHC filter, small, slightly elongated. The
N edge of the rim appears brighter.
Sharpless 2-71 in Aquila 19h02m+02d09'
17.5" (8/21/98): immediately picked up at 100x with an OIII filter. This
object is an unusually prominent obscure planetary! The best view was at
140x using an OIII filter. Appears fairly large, elongated N-S and brightest
along the east side. Seems mottled with a noticeably irregular surface
brightness.
13": at 79x with OIII filter; fairly faint, fairly large, oval N-S, can hold
steadily with direct vision. Appears relatively bright for an obscure
planetary. Located 6' E of a mag 10 star and several mag 11-12 stars are
near.
NGC 6781 in Aquila 19h18.5m +06d32'
17.5" (6/30/00): at 220x unfiltered this fairly bright PN has a 1.5' round
halo. The rim is brightest and more well-defined along an arc on the S and
SE rim. The central 45" hole is slightly darker and irregular in surface
brightness. A mag 13 star is at the NE edge and once or twice I caught a
fainter glimmer of an interior star north of center.
17.5" (7/12/99): at 100x appears fairly bright, round, ~1.6' diameter with a
darker center. I used a variety of magnifications and filters but the most
interesting view was at 220x using a UHC filter. With this combination the
PN is slightly elongated E-W and clearly brighter along the southern rim with
the brightening tapering towards the ends so this brighter portion had a
crescent appearance. Because of this asymmetric rim the darker center seems
offset and only weakly brightens at the NW rim. A mag 13 star is just off
the NE edge 1' from center.
13: brighter rim mainly on the SW side, slightly annular appearance. A
faint star is off the E edge.
Blue Flash Nebula (NGC 6905) in Delphinus 20h22.4m +20d06'
17.5: very pretty planetary at 280x. Fairly bright, fairly small, slightly
elongated. A very faint central star (V = 15.7) is visible. Takes 440x
well. Just off the N edge is a mag 11 star 1.4' from center and a mag 12
star is just off the S edge 39" from center.
8: moderately bright, uniform, slightly elongated N-S, two stars at the NE
and S edge.
Abell 70 in Aquila 20h31.6m-07d05'
17.5" (8/12/96): picked up without problem at 100x using an OIII filter as a
40" disc with a brighter streak running along the N side. Visible without
filter but the streak and disc are dimmer to view. Seen well without filter
at 220x where the disc is a bit more prominent but still brighter along the N
side.
17.5" (7/31/92): easily visible at 100x using an OIII filter and can hold
steadily with direct vision. Fairly faint, fairly small, almost round, 30"
diameter, estimate V = 14.0-14.3. Visible without filter using averted
vision. At 220x viewed without filter; faint, fairly small, appears to be
brighter along the N side, edges not as crisp using this higher power. The
brightening detected along the N edge of the rim at 220x is assumed to be a
very faint anonymous galaxy shining through the planetary.
NGC 7008 in Cygnus 21h00.5m +54d33'
17.5" (6/28/00): this beautiful, highly structured PN is situated just north
of a wide double star (9.3/10.2 at 18"). At 280x, the annular oval is
elongated SSW-NNE, ~90"x65". A bright 30" irregular knot is prominent at the
NE end. The SW end of the major axis has a fainter condensation and the rim
is clearly dimmest near the double star. The mag 14 central star shines
steadily as a does a slightly fainter mag 14.5 on the NE edge. Just off the
W edge is another 14th magnitude star. The darker center is faintly luminous
and the surface brightness is irregular over the entire oval giving a
mottled, wispy appearance.
13: bright planetary with unusual structure and several stars involved.
The striking complete annular ring is elongated SW-NE. A mag 14 central
star mag is visible as well as a mag 14 star at the NE edge and a faint
star is off the W edge. A small brighter knot marks the ENE end. The
planetary is located just N of h1606 = 9.3/10.2 at 18" separation.
8: unusual structure, curves S on the W side. A faint star is embedded.
IC 5148 in Grus 21h59.6m -39d23'
17.5 (10/30/99): Even at -39° declination, this moderately large planetary is
a beautiful annular ring at 100x with an OIII filter. Appears round, ~100"
diameter, the annulus has an irregular surface brightness. The central
"hole" is perhaps 25" in diameter and fairly dark. A mag 10.5 star is close
off the SSW edge.
13: fairly faint with OIII at 79x, fairly large. A mag 11 star is off the
S edge, clearly annular with averted vision. Possible central hole
elongated N-S.
