(IAAC) Obj: M 55 - Inst: 4.5" f/4.0 Newtonian reflector
anonymous at sedna.atmob.org
anonymous at sedna.atmob.org
Thu Oct 12 16:44:13 EDT 2006
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Observation Poster: Brent Reary <gmbreary at rollanet.org>
Observer: Brent Reary
Your skills: Intermediate (some years)
Date/time of observation: 09/24/06 02:05 UT
Location of site: Rolla, MO USA (Lat 37 57'N, Elev )
Site classification: Rural
Sky darkness: 6.5 <Limiting magnitude>
Seeing: 6 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 4.5" f/4.0 Newtonian reflector
Magnification: 150x
Filter(s): None
Object(s): M 55
Category: Globular cluster.
Class:
Constellation: Sgr
Data: mag 6.4 size 15'
Position: RA 19:40 DEC -30:58
Description:
An irregular circular halo which shows slight, gradual brightening to a
diffuse, circular core. The core is only slightly brighter than the
haze in which it sits. A scattering of faint stars are resolved completely
across the cluster and a 9th magnitude field star is located just off the
SSE edge.
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