Popular Post +RonC Posted January 15 Popular Post Share Posted January 15 (edited) My first 1x1 binning image, 448Mb originally ! 40x180s + darks, no Flats of Dark flats! Usual kit, lots of dust bunnies to get rid off!! I'll reprocess it when I have more time! Edited January 15 by RonC added text +Bino-viewer, +Graham, philjay and 7 others 10 Link to comment Share on other sites More sharing options...
+Graham Posted January 16 Share Posted January 16 That is nice Ron +RonC 1 Link to comment Share on other sites More sharing options...
+Glafnazur Posted January 16 Share Posted January 16 I used to think M33 was an ugly galaxy but it has grown on me over the years, nice capture Ron 👍 Link to comment Share on other sites More sharing options...
Clive Posted January 16 Share Posted January 16 It'd be interested to find out the cause of the 'black holes' in the middle of the bright stars. Did you stack using DSS by any chance? Link to comment Share on other sites More sharing options...
+RonC Posted January 17 Author Share Posted January 17 Yes Clive DSS, I never noticed them before!! Link to comment Share on other sites More sharing options...
Clive Posted January 17 Share Posted January 17 30 minutes ago, RonC said: Yes Clive DSS, I never noticed them before!! There was a discussion on the DDS forum quite some time back about DSS introducing black holes in bright stars. If I remember correctly instead of limiting the peak intensity to a maximum value it was reset back to 0 if it went above the maximum allowable value. If I also remember correctly it was something to do with the settings on the 'Cosmetic Correction' tab when stacking. I was under the impression that it had been fixed, but if it was I'm not sure at which version. It could be that going from 2x2 binning to 1x1 binning has highlighted the issue, I'll have a search through the forum to see if I can find the relevant thread if you're interested in investigating the problem. Link to comment Share on other sites More sharing options...
+Derbyshire Dave Posted January 17 Share Posted January 17 Nice job Ron +RonC 1 Link to comment Share on other sites More sharing options...
BAZ Posted January 18 Share Posted January 18 Good work Ron, it's not easy that one. The first time I looked for it visually, I spent two hours looking clean through it, I was using way too much magnification. I only realised when other area's of the sky weren't hazy. +RonC 1 Link to comment Share on other sites More sharing options...
+RonC Posted January 20 Author Share Posted January 20 On 17/01/2024 at 13:47, Clive said: There was a discussion on the DDS forum quite some time back about DSS introducing black holes in bright stars. If I remember correctly instead of limiting the peak intensity to a maximum value it was reset back to 0 if it went above the maximum allowable value. If I also remember correctly it was something to do with the settings on the 'Cosmetic Correction' tab when stacking. I was under the impression that it had been fixed, but if it was I'm not sure at which version. It could be that going from 2x2 binning to 1x1 binning has highlighted the issue, I'll have a search through the forum to see if I can find the relevant thread if you're interested in investigating the problem. Yes please Clive if you can? Link to comment Share on other sites More sharing options...
Clive Posted January 20 Share Posted January 20 1 hour ago, RonC said: Yes please Clive if you can? I had a quick search on the DSS forum. There are at least a couple of threads relating to 'black holes' in stars. I think the post I remembered regarding number overflow was related to V4.2.5 and the other thread related to enabling hot/cold pixel removal within the Cosmetic Tab was also for V4 versions but I didn't see anything suggesting something was done in subsequent releases. What version of DSS are you running and do you have anything enabled in the Cosmetic tab? Link to comment Share on other sites More sharing options...
+RonC Posted January 20 Author Share Posted January 20 Running version 5.1.5 Clive. Link to comment Share on other sites More sharing options...
Clive Posted January 20 Share Posted January 20 Wow you're brave! 😆. I would have thought any 'overflow' bugs in V4 would have been fixed in V5 but I'm not even convinced they've even sorted all the bugs that were introduced porting the new version to QT yet! Perhaps worth reseting to the default settings to see if that removes the holes or even try the last V4 version with the default settings (the different versions can run side by side on the same PC). Link to comment Share on other sites More sharing options...
+RonC Posted January 20 Author Share Posted January 20 Just done that and stacked some old M1 images and no star holes! I'll monitor the images in the future, thanks for your help Clive. Ron Link to comment Share on other sites More sharing options...
Clive Posted January 20 Share Posted January 20 I'm not sure I was any help, just a PITA for mentioning it! Hopefully it's sorted but if it happens again I would certainly recommend an email to the DSS forum. Link to comment Share on other sites More sharing options...
+RonC Posted January 21 Author Share Posted January 21 Clive, stacked both 1x1 and 2x2, the 1x1 stack still had some black holes in the larger stars but the 2x2 (same settings) did not? Link to comment Share on other sites More sharing options...
Clive Posted January 21 Share Posted January 21 How strange but it doesn't really surprise me! It could be due to a multitude reasons...the image capture software (I believe you use APT?), DSS or the processing software. If you post a few lights on a file sharing site I would be happy to have a look...I've got no other images of my own to process! Link to comment Share on other sites More sharing options...
+RonC Posted January 21 Author Share Posted January 21 I'm going to stick with 2x2 binning for while.... Link to comment Share on other sites More sharing options...
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