Quote:
Originally Posted by rat156
Unfortunately the EXIF data on the photo says the exposure was >1024 seconds, which probably means you had it set to Bulb, as that's about 17 minutes. It's a shame the camera didn't record the time of the exposure.
Did you have any focal reducers or anything else in line? If I can work out how to do it, I'll chuck it through TheSky and try to plate solve the photo, I think I can work out the image scale (450D and 100ED right?).
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Hi Stuart
The EXIF data from a copy that Chris e-mailed to me shows 9 secs at 1600 ASA.
Here is a screen print from The Sky giving a FOV of approx 83’ x 55’ centred on NGC253 (not my image!)
Cheers
Dennis