(IAAC) Obj: M 10 = NGC 6254 - Inst: 8" f/6 Newton, alt-az mount

Observer: Michael Geldorp
Your skills: Beginner (< one year)
Date/time of observation: 6-25-1998  23.25 UT
Location of site: Alphen ad Rijn, Holland (Lat 52.09 N, Elev )
Site classification: Suburban
Sky darkness: 5.0 <Limiting magnitude>
Seeing: II <I-V Seeing Scale (I best)>
Moon presence: None - moon not in sky
Instrument: 8" f/6 Newton, alt-az mount
Magnification: 49, 98, 203, 244
Filter(s): none
Object(s): M 10 = NGC 6254
Category: Globular cluster.
Constellation: Oph
Data: mag 6.6  size 15'
Position: RA 16:57  DEC -04:06
At low power M10 is almost as bright as M12 but with better resolution.
At high powers it appears as a loose globular, elongated somewhat from
SW-NE. The stars of this cluster appear to form two crossed arms, one
oriented NE-SW and the other N-S.
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