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JayinUT
I'm not Sleepy
Reged: 09/19/08
Posts: 950
Loc: Utah
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This is a digital image done in GIMP based on a sketch completed at the scope on July 21st, 2009, beginning at 11:40p.m using my XT10 and a 21mm Stratus at 57x.
When I first examined this I really questioned whether I wanted to sketch this open cluster. I decided to try and tackle it and just sketch what I could see. I had done M25 and several other sketches of other open clusters lately since I think they are often ignored this time of the year. I've been recording my observations on a digital recorder and uploading them to iTunes and am going to add a new dimension to my blog/coming Web Page. I am going to post up my audio observations of the items I am sketching. For me I find by keeping a written record and an audio one it helps me to remember what I am seeing as I am seeing it and I can return to listen to the observation again while I re-create it digitally.
The cluster is 2150 ly away from us and is estimated at 27 arc seconds across or 15 to 20 ly across. It is a rich cluster and between 129 to 147 members have been counted depending on which observation you go by. Finally it is estimated at 220 million to 300 million years old.
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Jay in Utah
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Location: Lat: 40.514N Long: -112.032W
Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular course, my feet no longer touch the earth.
— Ptolemy, c.150 AD
My Blog
Edited by JayinUT (07/26/09 02:19 AM)
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WadeVC
Carpal Tunnel
Reged: 12/02/05
Posts: 2831
Loc: Lodi, California,
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Jay,
Looking good buddy...keep it up and keep posting! 
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Orion XTi10 f/4.7
Orion XTi8 f/5.9
Meade NGC 70mm f/10
Orion UltraView 10x50 Wide-Angle Binoculars
My Sketch Gallery
My Astronomy Blog
A wise man can see more from the bottom of a well than a fool can from a mountain top.
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CarlosEH
Post Laureate
Reged: 01/19/05
Posts: 4142
Loc: Pembroke Pines, Broward County...
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Jay,
An excellent observation of M23. You have done a nice job recording the open cluster using Gimp. Thank you for sharing it with us all.
Carlos
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rodelaet
Post Laureate
Reged: 04/28/06
Posts: 3063
Loc: 50°56' N - 4°58' E (Belgium)
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Jay,
That is an excellent study of a great cluster! 
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Rony
My Astronomical Sketches
My Binocular Sketches
Callibrate your Monitor with this little strip.
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frank5817
Post Laureate
Reged: 06/13/06
Posts: 4093
Loc: Illinois
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Hi Jay,
Sketch of M23 looks real goooooooood buddy. The strings of stars here look very familiar. I think you nailed it beautifully. 
Frank 
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my gallery
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cildarith
Carpal Tunnel
Reged: 08/26/04
Posts: 2357
Loc: San Diego, CA
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Very nice sketch of M23, Jay!
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Eric
6" f/6 Parks Newtonian
10x50 Bushnell Binocs
CN Sketch Gallery||MinDat Mineral Gallery
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JayinUT
I'm not Sleepy
Reged: 09/19/08
Posts: 950
Loc: Utah
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Wade, Carlos, Rony, Frank and Eric,
Thanks for your kind comments. I am enjoying a lot of contributions by everyone of late and hope the weather holds up.
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Jay in Utah
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Location: Lat: 40.514N Long: -112.032W
Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular course, my feet no longer touch the earth.
— Ptolemy, c.150 AD
My Blog
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