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(IAAC) Obj: IC 4617 - Inst: 30" f/4.5 Newtonian with Dobsonian mount



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Observation Poster: Dave Mitsky <djm28@psu.edu>
Observer: Dave Mitsky
Your skills: Advanced (many years)
Date/time of observation: 2003/8/28 ~6:00 UT
Location of site: Cherry Springs State Park, Potter County, Pennsylvania, USA (Lat 41.6d N, 77.8d W, Elev ~800m)
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: 30" f/4.5 Newtonian with Dobsonian mount
Magnification: 244x
Filter(s): None
Object(s): IC 4617
Category: External galaxy.
Class: 
Constellation: Hercules
Data: mag 15.5  size 1.2' x 0.4'
Position: RA 16:42.1  DEC +36:41
Description:
I observed IC 4617, the dim Index Catalogue spiral galaxy near M13 for the first
time through Tom Whiting's new 30" Dob at Cherry Srings State Park two days
before the start of the Black Forest Star Party. M13 was fantastic at 388x
and the 11.6 magnitude spiral NGC 6207 seemed extremely bright through the 
large aperture. IC 4617 is situated 14.4' NNE of M13, approximately halfway
between NGC 6207 and M13, and seemed rather small at 1.2' x 0.4' but not 
particularly difficult to see. It appeared as a tiny, circular, non-stellar 
object. An image of IC 4617 is available at http://www.justjim.com/ctsp/
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Optional related URLs: http://www.justjim.com/ctsp/
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