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(IAAC) Obj: NGC 6643 - 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: 07/27/03 0445 UT
Location of site: Rolla, MO USA (Lat 37 57'N, Elev )
Site classification: Rural
Sky darkness: <Limiting magnitude>
Seeing: 6 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10" f/4.5 Dobsonian
Magnification: 36x, 68x, 72x, 136x
Filter(s): None
Object(s): NGC 6643
Category: External galaxy.
Class:
Constellation: Dra
Data: mag 11.1p size 3.9' X 2.1'
Position: RA 18:19.5 DEC +74:34
Description:
An elongated oval halo of uniform brightness, aligned NE-SW. There is no
detectable brightening toward the core. Two faint field stars, aligned
nearly E-W are located just off the N. edge. Located with averted vision
at 36x. It did not bear magnification well, fading into the background at
higher power. Best seen at 68-72x.
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