The Details
Object
M81 Bode's Galaxy in Ursa Major
Optics
Astro-Physics 160 EDF Refractor at f/7.5
Platform
Astro-Physics 1200 GTO
Camera
SBIG ST-10XME
Filters
SBIG Standard LRGB Filter set
Date
02 February 2006
Location
Aztec Hills near Dateland, Arizona - Yuma County
Exposure
L 5 x 1200 sec 1x1 bin; RGB 3 ea x 300 sec 2x2 bin
Software
Maxim DL/CCD, Registar, Photoshop CS
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. M81 has also been tidally affected by M82 as evidenced by the dust lanes below and to the right of the galaxy's core. At upper center, separated from M81 proper, can be found dwarf galaxy Holmberg IX (UGC 5336), a companion of the larger galaxy.

 

 

 

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