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(IAAC) Obj: NGC 6939 - Inst: 14.5" dob 1580 fl

To: Internet Amateur Astronomers Catalog <netastrocatalog@atmob.org>
Subject: (IAAC) Obj: NGC 6939 - Inst: 14.5" dob 1580 fl
From: Todd Gross <toddwx@rcn.com>(via Lew Gramer)
Date: Thu, 28 Jun 2001 15:40:24 -0400
Cc: Lew Gramer (me) <dedalus@alum.mit.edu>
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Observer: Todd Gross
Your skills: Advanced (many years)
Date/time of observation: 6/27/01
Location of site: 22 miles west of Boston (Lat 42, Elev 200)
Site classification: Suburban
Sky darkness: 4.9 <Limiting magnitude>
Seeing: 6 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 14.5" dob 1580 fl
Magnification: 82, 129x
Filter(s): None
Object(s): NGC 6939
Category: Open cluster.
Class: Rich
Constellation: Cep
Data: mag 7.8  size 8'
Position: RA 20:31  DEC 60:38
Description:
Really beautiful object in this aperture. Similar to the wild duck cluster
but not as bright. Forms an arrow at low power with uneven sides, almost in
a flock of geese formation. Mostly resolved at 82x but not quite. Fairly
uniform and rich. Arrow pointed south I believe.
--
Looking at this again at 129x, it takes on a more kite-like appearance with
brighter stars defining a kite or crucifix shape, enclosing the now-resolved
and fairly rich cluster of uniform stars. 
--
Rating at this aperture: B+


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