(IAAC) Obj: NGC 6210 - Inst: 10 inch f/5.6 Newtonian

Observer: David Knisely
Your skills: Advanced (many years)
Date/time of observation: March 5, 2000, 0835 UT
Location of site: Rockford Lake, Nebraska (Lat 40.23N, Elev 1400 ft)
Site classification: Rural
Sky darkness: +6.8 <Limiting magnitude>
Seeing: 0.8" arc <Photographic (Airy disk sec)>
Moon presence: None - moon not in sky
Instrument: 10 inch f/5.6 Newtonian
Magnification: 59x, 353x
Filter(s): UHC/OIII/None
Object(s): NGC 6210
Category: Planetary nebula.
Class: II
Constellation: Her
Data: mag 9.7  size 20"x16"
Position: RA 16:44.5  DEC +23:48'
Small bluish-green disk at 59x.  UHC and OIII filters show hints of a close-in
very faint outer shell, especially north and south of the main disk.   353x and
no filter shows a bluish oval main disk with diffuse edges.  Superimposed on
this oval is a slightly smaller and slightly brighter broad ring-like feature 
centered on the core.  The core itself appears as a small fuzzy spot, but when
seeing is good, a faint central star appears, approximatly 12th magnitude. 
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