2013-09-02 22:00-01:00
Some faint fog clouds, no moon, no wind, little moist, 10 degrees C

M51
Exposures:
34x180s LIGHT
40x180s DARK
20 BIAS
16 FLAT

Camera: Canon EOS-600D, ISO800
Lens: Meade Model 2080 8-inch Schmidt-Cassegrain + Meade Focalreducer 6.3
Mount: HEQ5 Pro
Skywatcher SynGuider auto guider and Celestron 80mm guide scope
Software: BackyardEOS, PixInsight