(IAAC) Obj: M 4 - Inst: 4.5" f/4.0 Newtonian reflector

**anonymous@sedna.atmob.org**

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Observation Poster: Brent Reary <gmbreary@rollanet.org>

Observer: Brent Reary
Your skills: Intermediate (some years)
Date/time of observation: 07/31/06  02:40 UT
Location of site: Rolla, MO  USA (Lat 37 57'N, Elev )
Site classification: Rural
Sky darkness: 5.0 <Limiting magnitude>
Seeing: 5 <1-10 Seeing Scale (10 best)>
Moon presence: Minor - crescent or far from object
Instrument: 4.5" f/4.0 Newtonian reflector
Magnification: 150x
Filter(s): None
Object(s): M 4
Category: Globular cluster.
Class: 
Constellation: Sco
Data: mag 5.8  size 25'
Position: RA 16:23.5  DEC -26:31.5
Description:
A uniform circular halo which gradually brightens to a fairly bright,
nearly round, diffuse core.  Stars are resolved around the edges as
well as a scattering of resolved stars completely across the cluster.
An incomplete line of brighter stars appears to stretch from N-S across
the cluster and passing very close to the core.

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