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(IAAC) Obj: M80 (NGC 6093) - Inst: 10-inch, f/4.5, Dobsonian
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Observation Poster: Mitchell Diers <deltacassopeiae@hotmail.com>
Observer: Mitchell Diers
Your skills: Intermediate (some years)
Date/time of observation: June 11, 2002 End of Evening Astronomical Twilight and Midnight
Location of site: Turlock, CA (Lat 120deg.50min, Elev 167 ft.)
Site classification: Urban
Sky darkness: 8 <1-10 Scale (10 best)>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10-inch, f/4.5, Dobsonian
Magnification: 44x, 118x, and 178x
Filter(s): None
Object(s): M80 (NGC 6093)
Category: Globular cluster.
Class:
Constellation: Scorpius
Data: mag 8 size 7'
Position: RA 16:14 DEC 22:52
Description:
At 44x M80 looks like a faint smudge and there is no detail. The cluster looks perfectly circular. At 118x I can pick out a much brighter central core and quickly faiding outward. This cluster also looks grainy like with still no detail. At 178x the cluster is still heavily grainy but can pick out some individual brighter stars in the cluster using peripheral vision but is really difficult. Using a 2x Barrlow lens the cluster shows some dim stars and the brighter stars I can see almost with direct vision.
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