+Derbyshire Dave Posted January 31, 2019 Share Posted January 31, 2019 Last night, halfway through this process, my dew bands caught fire, but I tried not to let that put me off! This is a combination of different length shots 60 second, 90 second and 180 seconds at ISO 100, and then all stacked in one pass in Deep Sky Stacker. Never tried that before, but seems to have helped not to burn out the centre. Link to comment Share on other sites More sharing options...
+Graham Posted January 31, 2019 Share Posted January 31, 2019 You seem to have a serious case of misalignment during the stacking process there Dave. +Derbyshire Dave 1 Link to comment Share on other sites More sharing options...
red dwalf Posted January 31, 2019 Share Posted January 31, 2019 miss alignment of some subs as Graham says, will make a big difference once aligned properly. +Derbyshire Dave 1 Link to comment Share on other sites More sharing options...
+Derbyshire Dave Posted January 31, 2019 Author Share Posted January 31, 2019 Graham, Thanks you are absolutely correct. I was concentrating so hard on processing the core and not blowing it out, that I missed the bleedin' obvious! I'm going to have a good look tomorrow through the various image sets. As well as the different exposure lengths, I did a manual meridian flip which is only the second time I have tried that, using plate solving to 'come put of the other side' and get as close as I could. It will be interesting to see if I can track down and identify the issue. Cheers, and thanks again.. Link to comment Share on other sites More sharing options...
+Bino-viewer Posted January 31, 2019 Share Posted January 31, 2019 Your dew bands caught fire.......??? ? Crikey......what voltage were you putting through them ? Joe 1 Link to comment Share on other sites More sharing options...
+Derbyshire Dave Posted January 31, 2019 Author Share Posted January 31, 2019 Hi Rob, They were connected directly to my 12V car jumpstart supply, that's what I've always done with no issues for a couple of years. I'd left the cables out in a severe dew and then connected them up latterly, so I think some sort of shorting went on. The fuse in the cable was 5A, I'll cretainly be reduciing that! Link to comment Share on other sites More sharing options...
+Derbyshire Dave Posted February 1, 2019 Author Share Posted February 1, 2019 Tracked down the issue to the images I had created after the meridian flip. I haven't got an ascom mount, so the flip was done manually, and then I used plate solving to get somewhere near. I then expected DSS to sort things out, but it clearly couldn't. Removed just those images from after the flip, and all stacked OK. The only other time I had tried that, it stacked perfectly. Re-processed to give more prominence to the core, and also posted a wider view.. Link to comment Share on other sites More sharing options...
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