Demon Posted April 23, 2022 Share Posted April 23, 2022 Hi All, Having read what I've found on the subject, the offset value clips the black end of frames removing a degree of typical noise. Particularly for long exposures this sounds great, however before I do some testing I'm hoping you can save me some time. It sounds like most stay with the standard offset values while some do calibrate this for their specific conditions. I'm trying to go light bucket and short exposures (lucky imaging) particularly for galaxies and having only just bought my first semiproper camera this setting has reared it's head. My image files are coming out practically the same size for each exposure and I think this may be clipping some data that I want to go through to stacking. I absolutely agree I need to try longer but need to understand this better first. I'm thinking of doing some tests to understand how the standard offset changes/if it does, depending on gain, exposure time, temperature, etc. Nothing is detailed in the manual (zwo). Would appreciate the benefit of your experiences please particularly on short exposures (lucky imaging) in order to try to alleviate seeing as much as possible. Thanks very much. Quote Link to comment Share on other sites More sharing options...
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