astroimages
Darin E. Fields' Astrophotography Pages
 

M109: Spiral Galaxy in Ursa Major

Right Ascension 11 : 57.6 (h:m)
Declination +53 : 23 (deg:m)
Distance 55000 (kly)
Visual Brightness 9.8 (mag)
Apparent Dimension 7x4 (arc min)

More information on M109

Exposure:40 Minute exposure. 20 x 120 sec.)
Camera:ST-237 cooled @ -30c
Guiding:ST-4 on ST-80 at f/10
Telescope: 8" f/4 Newtonian
Mount: Losmandy G-11
Processing:Maxim/DL and Photoshop 6
Date:03-023-02
m109:
A 180 second 2x binned exposure cooled at -15c off ambient on the ST-237
m109-1: