(IAAC) Obj: M 4 - Inst: 15" f4.5 Obsession

anonymous at s15272250.onlinehome-server.com anonymous at s15272250.onlinehome-server.com
Tue May 20 23:38:51 EDT 2008


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

Observer: Armin Hermann
Your skills: Advanced (many years)
Date/time of observation: 12 Apr 2008
Location of site: Sangkhlaburi / Thailand (Lat +15, Elev 200m)
Site classification: Exurban
Sky darkness: 5.5 <Limiting magnitude>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 15" f4.5 Obsession
Magnification: 342x, 131x
Filter(s): none
Object(s): M 4
Category: Globular cluster.
Constellation: Sco
Data: mag 5.8  size 26'
Position: RA 16:23  DEC -27:
Huge cluster that is completely resolved into stars at 342x. At that magnification it 
looks almost like a very dense open cluster. M4 does not have a condensed center 
like M15 and at high magnification the cluster looks rather unspectacular. M4 is 
definitely an object for lower powers.

** This observing log was submitted via the IAAC Web form:

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