(IAAC) Obj: IC 4997 - Inst: C14, 22mm Nagler

anonymous at sedna.atmob.org anonymous at sedna.atmob.org
Wed Sep 1 18:18:29 EDT 2004


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Observation Poster: Scott L. Hogsten <shogsten at compuserve.com>

Observer: Scott L. Hogsten
Your skills: Intermediate (some years)
Date/time of observation: 2004/08/31 - 21:45 EST
Location of site: West Jefferson, Ohio (Lat 40N, Elev 1046)
Site classification: Exurban
Sky darkness: 6 <Limiting magnitude>
Seeing: 4 <1-10 Seeing Scale (10 best)>
Moon presence: Major - gibbous or near object
Instrument: C14, 22mm Nagler
Magnification: 177x, 325x
Filter(s): None
Object(s): IC 4997
Category: Planetary nebula.
Class: 
Constellation: SGE
Data: mag 11.6  size 2 arcmin
Position: RA 20:20.2  DEC 16:45:
Description:
Very small, circular, almost stellar planetary nebula. In the eyepiece at 177x it was clearly a planetary with a light blue green cast. The nearly full moon was rising but did not interfere with my view. It was more difficult to see with direct vision, but by using averted vision it was very easy to pop it into view. This object was surprising easy to see for it's size and small diameter. Jumping to 325x did not improve the image or reveal any additional structure.
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