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(IAAC) Obj: NGC 6642 - Inst: 15 inch Obsession f4,5
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To: Internet Amateur Astronomers Catalog <netastrocatalog@visualdeepsky.org>
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Subject: (IAAC) Obj: NGC 6642 - Inst: 15 inch Obsession f4,5
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From: anonymous@sedna.atmob.org
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Date: 4 Oct 2004 03:53:13 -0000
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Observation Poster: Armin Hermann <burmeseinn@yahoo.com>
Observer: Armin Hermann
Your skills: Advanced (many years)
Date/time of observation: 03 Oct 2004
Location of site: Sangkhlaburi, Thailand (Lat 15°N, Elev 200m)
Site classification: Exurban
Sky darkness: ~5 <Limiting magnitude>
Seeing: 7-8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 15 inch Obsession f4,5
Magnification: 131 and 342x
Filter(s): none
Object(s): NGC 6642
Category: Globular cluster.
Class:
Constellation: Sgr
Data: mag 9,4magv size 4,5'
Position: RA : DEC :
Description:
Located just 1,1° WNW of the phantastic M22. 131x shows a tiny granular looking
cluster that features a small bright core. Single stars located along the edge
of 6642 are resolved at 342x. The bright core does not show any single stars.
The overall diameter is approx. 3’.
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