(IAAC) Obj: m17 - Inst: Orion 10" DSE f/5.6

anonymous at sedna.atmob.org anonymous at sedna.atmob.org
Mon Jul 19 03:35:40 EDT 2004


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Observation Poster: Brian Carter <nairbretrac at hotmail.com>

Observer: Brian Carter
Your skills: Beginner (< one year)
Date/time of observation: 7-18-04
Location of site: Covington, GA (Lat , Elev )
Site classification: Exurban
Sky darkness: 7 <1-10 Scale (10 best)>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: Orion 10" DSE f/5.6
Magnification: 37
Filter(s): UHC
Object(s): m17
Category: Emission nebula.
Class: 
Constellation: Sag
Data: mag 6.0  size 11.0'
Position: RA 18:20.8  DEC -16:11
Description:
Swan shape very evident without any imagination at all.  My first scope was a 
70mm refractor and I almost had to imagine that there was a swan there.  Now there
is no question.  West of the swan is a bright yellow star, Burhnam's says it 
is around mag 9, sounds about right.  below the swan, pointing north is a
 triangle asterism of stars, with the apex pointing north.  With a UHC filter 
the visible nebulosity doubles in size.  The triangle asterism is filled completely.  East are 3 bright stars: yellow due east, and double yellow star SE.
.  The swans tail is extended very broadly well out of the FOV.  The swan figure
remains the brightest and most conspicuous, the rest is very delicate, almost
like a bit fog on the eyepiece.  Very pretty.
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