M51-L

4/30/2011 from Wa'chur'ed Observatory

Imaging scope: AT111EDT w/Televue 0.8X reducer/flattener
Imaging camera: QSI583ws at -15C
Mount: Orion Atlas/EQMOD
Guide scope/camera: ST80/DSI
Exposure: 10 x 240 seconds luminance only
Calibration: 32 bias frames, 20 dark frames, 20 flats
Processing: calibration and stacking in Maxim DL, Photoshop curves and lens correction, Noise Ninja