(IAAC) Obj: M10 - Inst: TV-102 (102mm f/8.6 APO refractor)


Observation Poster: Ron B[ee] <ronby@home.com>

Observer: Ron B[ee]
Your skills: Beginner (< one year)
Date/time of observation: 07/16/01
Location of site: 117h 9m W (Lat 32h 43m N, Elev 2000 ft)
Site classification: Exurban
Sky darkness: 5 <Limiting magnitude>
Seeing: 5 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: TV-102 (102mm f/8.6 APO refractor)
Magnification: 30x, 60x, 110x, 146x, 176x, 220x
Filter(s): none
Object(s): M10
Category: Globular cluster.
Constellation: Oph
Data: mag 6.6  size 15'
Position: RA :  DEC :
At 30x, look like round ball.   60x gave a salt-and-pepper look.  Approx. 10 
stars in the core at 110x with more stars using averted vision.  Core still 
bright at 146x, same view as 110x.  Best view at 176x, core still bright count 
more, approx. 20 stars.  220x gave same view at 176x and still bright, averted 
vision seemed to resolve the core.

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