Hi Mick
Good shot.
There doesn't seem to be any tracking problems (although difficult to tell at that focal length). Focus is good and the depth of nebulosity is very good.
Check the histogram of your image. You should be able to set the black point considerably higher (move the slider to the left edge of the histogram). That will improve contrast. However it will also show up the considerable vignetting.
To improve the results consider calibration with darks and flats and stack heaps of frames.
Cheers
Last edited by Itchy; 20-04-2006 at 06:23 AM.
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