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(IAAC) Obj: NGC 7640 - Inst: 10" f/4.5 Dobsonian
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Observation Poster: Brent Reary <gmbreary@rollanet.org>
Observer: Brent Reary
Your skills: Intermediate (some years)
Date/time of observation: 09/26/03 02:10 UT
Location of site: Rolla, MO USA (Lat 37 57'N, Elev )
Site classification: Rural
Sky darkness: 6.0 <Limiting magnitude>
Seeing: 5 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10" f/4.5 Dobsonian
Magnification: 36x, 68x, 72x, 128x
Filter(s): None
Object(s): NGC 7640
Category: External galaxy.
Class:
Constellation: And
Data: mag 10.8p size 11' X 2.5'
Position: RA 23:22 DEC +40:51
Description:
Faint. A thin, elongated halo with a slightly brighter nuclear bulge.
As the halo extends away from the core area it narrows and becomes more
diffuse until it fades into the background. Aligned nearly N-S. Positioned
in a fairly rich star field, the galaxy seems to almost float behind several
faint field stars which border it. Located with averted vision at 68x.
It did not magnify well, fading into the background at higher powers.
Best seen at 68x-72x.
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