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Old 14-01-2019, 06:40 PM
Stefan Buda
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Stefan Buda is offline
 
Join Date: Jul 2013
Location: Melbourne, VIC
Posts: 823
Thanks Bratislav for helping me with this. One day I will have to tackle that Roddier learning curve.

Last night I tried to produce an image with a larger sensor, to asses the off axis field correction. I had a few problems that were not OTA related. I had installed a guide scope, but forgot to add extra counter weight to the mount. So the mount was being driven down hill and it was quite windy too, therefore my tracking was quite bad. Not to mention that polar alignment was not very good either. In the end I managed to capture a bunch of 10sec frames of IC2391 with a few calibration frames. My old QHY8 camera is not responding to gain and offset changes since I started using a different laptop - another issue to sort out.
Anyway, the wind died down completely by the time I packed up, and the data collected was good enough to convince me that I a have nice evenly corrected field corner to corner.
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