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M31

Here is another M31 image using my 70-200 zoom and a friend's Paramount mount for tracking. This was shot unguided with light clouds and the moon eventually coming up right as the imaging session ended. I might have done better with a light pollution filter, but I am relatively happy with this result and it is a definite improvement over my previous attempt. Details are:

Camera: Canon 40D (unmodified)
Telescope: Canon 70-200 f/4 L IS Lens
Mount: Paramount ME
Location: Lyons, CO
Software: PixInsight

Total Exposure: 1 hour and 9 mins

Light Frames:
ISO 400, 120 secs x 1
ISO 400, 180 secs x 9
ISO 400, 240 secs x 10

Dark Frames:
ISO 400, 120 secs x 15
ISO 400, 180 secs x 15
ISO 400, 240 secs x 15

M31