michael.h.f.wilkinson Posted December 25, 2020 Share Posted December 25, 2020 Managed to get 2 hours 3.5 minutes of data on the Horse-Head last night with APM 80mm F/6 triplet, 0.8x reducer, Optolong L-eXtreme filter, and Canon EOS 550D (modded). Despite making new darks, and (manually) dithering I got some pattern noise in the inky black background. Combining it with data from December 18 which showed much more pattern noise, for a total of 4 h 25 minutes of data, improved matters Still have to combine this with 2 hours of data without Optolong L-eXtreme filter 8 Link to comment Share on other sites More sharing options...
michael.h.f.wilkinson Posted December 26, 2020 Author Share Posted December 26, 2020 Just added the older data in a quick and dirty way (hadn't computed a weightmap for these data yet, so edges show up more than they should) so needed to crop out tthe edges a bit more. Pattern noise still showing. Perhaps I should gun for this with the ASI183MC instead (perhaps even with the 0.6x reducer) 4 Link to comment Share on other sites More sharing options...
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