Jeepers, the Sombrero Galaxy doesn't look so bad for bumbling around with this big tube, fair atmospheric transparency, and then rolling clouds coming in to keep me to just 150 frames rather than the 250 frames planned. Unguided, 156 x 15 sec JPEG frames at 1600 ISO, noise reduction enabled, modified Canon Rebel XSi. Just stacked and stretched. Will try a little bias preprocessing to see if it helps a bit on the noise, I pushed this one pretty hard.
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