(IAAC) Obj: M 75 - Inst: 15" f4.5 Obsession

[anonymous at s15272250.onlinehome-server.com]

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Observation Poster: Armin Hermann <burmeseinn at yahoo.com>

Observer: Armin Hermann
Your skills: Advanced (many years)
Date/time of observation: 27 Jun 2008
Location of site: 5 km N of Kanchanaburi, Thailand (Lat 14 N, Elev 50m)
Site classification: Exurban
Sky darkness: 5.5 <Limiting magnitude>
Seeing: 9 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 15" f4.5 Obsession
Magnification: 131x, 342x
Filter(s): 
Object(s): M 75
Category: Globular cluster.
Class: 
Constellation: Sgr
Data: mag 8.5  size 4.6'
Position: RA 20:06  DEC -22:
Description:
Very dense cluster with a diameter of approx 4'. At 342x only a few stars are 
resolved in the vicinity of the cluster's edge. The brightest stars are 
catalogued with 14.6 mag. M 75 shows a very bright center with a small 30" 
core. Nice.
Seeing fairly small, faint Messier objects like M75, I always wonder why 
Messier 
did not includ so many brighter globulars located in the area Sgr, Oph.

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