Continuing experimentation with Canon T1i on 10-in LX-200 at 2,500 mm focal length.  March 2, 2011 pointed at M82 and took some 180 10-sec sub-frames at ISO 1600 and "S" setting, saved images as JPEGs.

Deep Sky Stacker stacked all 180 images to give an equivalent exposure of 30 minutes.  Slight curves adjustment in DSS, then imported TIFF into MaximDL where image was binned 3x3 and stretched to 8 bits and saved as a JPEG.  Full frame (784x582) shown.  Resolution approximately 2.3 arcsec/pixel.