M81
Spiral Galaxy in Ursa Major
Exposure Data: An LRGB image taken with a SBIG ST-10XE/CFW-8A CCD camera and an IDAS light pollution filter. The L exposures totaled 205 minutes, RGB exposures were binned 2x2 and were 75:75:120 minutes
Telescope: TEC 140 refractor on a Losmandy G11 mount
Guiding: Autoguided by an SBIG ST-4 off-axis with a Lumicon GEG
Location and Date: Saugus, MA on 4-16/17-2004