(IAAC) Obj: M 53 - Inst: 4.5" f/4.0 Newtonian reflector

Observation Poster: Brent Reary <gmbreary@rollanet.org>
Observer: Brent Reary
Your skills: Intermediate (some years)
Date/time of observation: 5/19/07  04:10 UT
Location of site: Rolla, MO  USA (Lat 37 57'N, Elev )
Site classification: Rural
Sky darkness: 6.5 <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: Minor - crescent or far from object
Instrument: 4.5" f/4.0 Newtonian reflector
Magnification: 60x, 75x, 150x
Filter(s): None
Object(s): M 53
Category: Globular cluster.
Constellation: Com
Data: mag 7.7  size ~10'
Position: RA 13:13  DEC +18:10
A uniform circular halo which gradually brightens to a bright, diffuse
round core.  While no individual stars are resolved across the cluster,
at 150x the object takes on the appearance of very finely ground glass
suggesting that the resolution of at least some of its stars must be near.
A pair of 9th-10th magnitude field stars, aligned ENE-WSW, are located to
the S..
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