robindurant Posted September 14, 2020 Share Posted September 14, 2020 (edited) Any ideas what these black speck are, I used my WO z71 + ZWO Asi 2m iso 800 Not proceeded fully to show marks Edited September 14, 2020 by robindurant Link to comment Share on other sites More sharing options...
Pixies Posted September 14, 2020 Share Posted September 14, 2020 Are these visible through an eyepiece, or AP only? Link to comment Share on other sites More sharing options...
robindurant Posted September 14, 2020 Author Share Posted September 14, 2020 No just when processed Link to comment Share on other sites More sharing options...
Astrid Posted September 14, 2020 Share Posted September 14, 2020 (edited) Perhaps it could be the camera’s overheated sensor? I’m assuming that this is a problem mostly with long exposures Edited September 14, 2020 by Astrid Link to comment Share on other sites More sharing options...
discardedastro Posted September 14, 2020 Share Posted September 14, 2020 What's your processing workflow look like to get it to that point? Can you post some raw data? I would guess at some stage you're exacerbating an issue with the raw data in your processing. Link to comment Share on other sites More sharing options...
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