The Details |
|
Object |
M 13 The Great Cluster in Hercules |
Optics |
12.5" RCOS Ritchey-Chretien at f/6.9 |
Platform |
Astro-Physics 1200 GTO |
Camera |
SBIG ST-10XME |
Filters |
Tru-Balance LRGB filter set |
Date |
06 June 2004 |
Location |
Mount Wilson Observatory, Mount Wilson CA |
Exposure |
L 3 x 180 sec 1x1 bin; RGB 3 ea x 60 sec 2x2 bin |
Software |
Maxim DL/CCD, Registar, CCDSharp, Photoshop |
| Orientation | Field of view: 20' 58" x 15' 00" centered on RA 16h41m51s DEC 36°27'18". North angle 83.2°; east 90° CCW from north |
| Notes | This superb example of a globular cluster is about 25000 light years from earth and spans about 140 light years from end to end. Made up of several hundreds of thousands of stars, M13, visible to the naked eye from dark sky sites, is the most impressive globular cluster in the northern sky. |
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No reproduction of these images are permitted without prior approval of the author.