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(IAAC) Obj: Stephan's Quintet, HCG 92 (Hickson 92, NGC 7317, NGC 7318A, NGC 7318B, NGC 7319, NGC 7320) - Inst: 16" f/4.45, Newtonian reflector, truss dob, with tracking
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To: Internet Amateur Astronomers Catalog <netastrocatalog@visualdeepsky.org>
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Subject: (IAAC) Obj: Stephan's Quintet, HCG 92 (Hickson 92, NGC 7317, NGC 7318A, NGC 7318B, NGC 7319, NGC 7320) - Inst: 16" f/4.45, Newtonian reflector, truss dob, with tracking
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From: apache@galaxy.atmob.org (Apache User)
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Date: Sat, 1 Nov 2003 16:51:29 -0500 (EST)
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Observation Poster: Don Clouse <dlcdeepsky@insightbb.com>
Observer: Don Clouse
Your skills: Intermediate (some years)
Date/time of observation: October 23, 2003, 01:30 UT
Location of site: Twin Lakes Star Party, Pennyrile State Forest, KY, USA (Lat 37 N, Elev 373 feet)
Site classification: Rural
Sky darkness: 7 <1-10 Scale (10 best)>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 16" f/4.45, Newtonian reflector, truss dob, with tracking
Magnification: 172x
Filter(s): none
Object(s): Stephan's Quintet, HCG 92 (Hickson 92, NGC 7317, NGC 7318A, NGC 7318B, NGC 7319, NGC 7320)
Category: Group of galaxies.
Class:
Constellation: Peg
Data: mag size 4'x3'
Position: RA 22h:36m DEC +33d:58m
Description:
All observations are at 172x (10.5mm Pentax XL, 23' true field).
Stephan's Quintet (HCG 92) - 01:20 UT - All five galaxies are seen, however 7319
requires averted vision to be seen clearly. The entire group spans about 4'.
Small cores are visiible in 7318A & B and 7320. A & B are less than 0.5' apart,
with no obvious interaction detail seen.
NGC 7319 - 01:30 UT, 13.1v, SB(s)bc pec, 1.5'x1.1' - Extremely faint requiring
averted vision to be seen clearly. Relatively large at greater than 1' in
length and oriented NW/SE.
NGC 7318B - 01:35 UT, 13.9b, SB(s)bc pec, 1.4'x0.9' - Rather small at less than
1' in size. A tiny, non-stellar nucleus is seen intermittently and is surrounded by an extremely faint glow.
NGC 7318A - 01:38 UT, 14.3b, E2 pec, 0.8'x0.6' - Similar in size to its close
neighbor, 7318B. The near stellar nucleus is brighter than 7318B's nucleus.
NGC 7320 - 01:40 UT, 13.2b, SA(s)d, 2.3'x1.1' - Relatively large at perhaps 1.5'
to 2' in length, elongated NW/SE. A tiny, bright, stellar core is offset to
the SE. The surrounding haze is of uniform brightness and requires averted
vision to be seen well.
NGC 7317 - 01:42 UT, 13.6v, E4, 0.8'x0.7' - A small, faint, 0.5' haze,
elongated NW/SE, lies just to the south an 11th mag star (actually, 14" SE of
mag 12.7 star GSC 2743:1548). This glaxy was just detectable with direct
vision.
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