(IAAC) Obj: M28 (NGC6626) - Inst: 8" f/10 SCT fork mount


Observer: Jim Williams
Your skills: Advanced (many years)
Date/time of observation: 6-25-00  80:47 UT
Location of site: Stockton, Ca (Lat 38^0 N, Elev 20')
Site classification: Suburban
Sky darkness: 6.0 <Limiting magnitude>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 8" f/10 SCT fork mount
Magnification: 100X, 324X
Filter(s): None
Object(s): M28 (NGC6626)
Category: Globular cluster.
Constellation: Sgr
Data: mag 6.9  size 11.2 (Tirion)
Position: RA 18:24.5  DEC -24:52
At 100X, this cluster appears 4' in diameter and is much
brighter toward the center. No stars are resolved. The 
nucleus is tight. Wil Tirion and Uranometria 2000 Deep
Sky Field Guide both list this GC as 11.2' in dia., so 
my current southern sky conditions only allow the brighter,
inner regions to be seen.
At 324X, the core is more apparent and noticeably brighter
than the surrounding areas with just a hint of half a dozen 
resolved stars just outside the core.  
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