M51
Notes:
The Whirlpool spiral galaxy in Canes Venatici is about 37 million light years away.
Telescope:
C11
Mount:
MI-250
Camera:
SBIG ST-10XME
Filters:
Astrodon LRGB
Dates:
April 19-20, 2006
Exposure:
Lum=8x9min (72mins), RGB=5x9min each for 207 minutes (3.45hrs) total at -25C