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(IAAC) Obj: NGC 6539 - Inst: 13" f/5.6 Newtonian on Bigfoot German EQ
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Observer: Steve Coe
Your skills: Advanced (many years)
Date/time of observation: 25 July 98
Location of site: Strawberry, Arizona USA (Lat +34, Elev 7000 ft)
Site classification: Rural
Sky darkness: 8 <1-10 Scale (10 best)>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 13" f/5.6 Newtonian on Bigfoot German EQ
Magnification: 100X
Filter(s): none
Object(s): NGC 6539
Category: Globular cluster.
Class:
Constellation: Oph
Data: mag size
Position: RA : DEC :
Description:
NGC 6539
100X--faint, pretty large, brighter middle, irregularly round,
resolved even at 100X, about 8 very faint stars seen, better
resolved with averted vision. There is an 11th mag star at the
edge of this globular, it is in a PA of 330 degrees. This
low surface brightness cluster is not helped with higher powers.
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Optional related URLs:
** This observing log automatically submitted via the Web from:
http://www.visualdeepsky.org/enter-log.html