(IAAC) Obj: M 72 - Inst: 15 inch Obsession f4,5

anonymous at sedna.atmob.org anonymous at sedna.atmob.org
Mon Oct 4 00:11:58 EDT 2004


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

Observer: Armin Hermann
Your skills: Advanced (many years)
Date/time of observation: 03 Oct 2004
Location of site: Sangkhlaburi, Thailand (Lat 15°N, Elev 200m)
Site classification: Exurban
Sky darkness: ~5 <Limiting magnitude>
Seeing: 7-8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 15 inch Obsession f4,5
Magnification: 131x, 342x
Filter(s): none
Object(s): M 72
Category: Globular cluster.
Constellation: Aqr
Data: mag 9,2magv  size 6,5'
Position: RA :  DEC :
One wonders why Messier did log this small cluster but did not register all the 
similarly faint clusters in Oph or Sgr.M72 looks granular at 131x and resolves 
into 2 dozen stars at 342x. The diameter appears to be some 5’. M72 has a loose 
appearance and does not brighten much towards the center. Unspectacular Messier-

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