 |
The Details |
|
Object |
M81 in Ursa Major |
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 |
10 March 2005 |
Location |
Red Cloud Road, Eastern Riverside County CA |
Exposure |
L 12 x 300 sec 1x1 bin; RGB 4 x 300 sec, 2x2 bin |
Software |
Maxim DL/CCD, Registar, Photoshop, Neat Image 4.4 Pro+ |
Orientation |
Field of View: 18’10" x 12’30" centered on RA 09h55m47s DEC 69°01’20”. North angle 88.15 °; east 90° CW from north |
| Notes | Discovered by Johann Bode on December 31, 1774. Also known as Bode's Nebula, this galaxy is 12 million light years distant. Its nearby neighbor, M82, also discovered by Johann Bode on the same night, is only 150,000 light years from M81 and has undergone structural deformation because of the gravitational attraction of its larger neighbor. This image was the result of a collaborative effort between Dave Jurasevich and David Held , sharing data acquisition and processing tasks. |
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No reproduction of these images are permitted without prior approval of the author.