(IAAC) Obj: NGC 6633 - Inst: 3.5" (9cm) ecuatorial refractor
anonymous at sedna.atmob.org
anonymous at sedna.atmob.org
Mon Jul 12 06:55:20 EDT 2004
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Observation Poster: Tudorica Alexandru <tudorica_a at yahoo.com>
Observer: Tudorica Alexandru
Your skills: Intermediate (some years)
Date/time of observation: 18.06.2004, 22:49 UT
Location of site: Ghirdoveni, Romania (Lat +45, Elev 260 m )
Site classification: Rural
Sky darkness: +6.5 <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 3.5" (9cm) ecuatorial refractor
Magnification: 38x, 76x, 110x
Filter(s): none
Object(s): NGC 6633
Category: Open cluster.
Class:
Constellation: Dra
Data: mag 4.6 size 27'
Position: RA 18h:27' DEC +6:34'
Description:
Very big star cluster (about 1.5 deg) , made of many faint stars,
encircled by about 7 brighter ones. Makes a good pair with I. 4756
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