Hallingskies Posted February 19, 2021 Share Posted February 19, 2021 Just tried some calibration frames with my under-used SX694. The master dark appear to show a dead column and faint diagonal banding. The flats show slightly uneven illumination at the top edge, though I think this might be a shadow of the OAG. Do these seem "normal" or workable for imaging purposes? I must admit I am rather lazy and don't normally use darks or flats, preferring to use a hot pixel filter and a clean optical path instead (though I do have to use flats with RGB - I can usually get away without them in narrowband for some reason). Any advice or comment welcome... Quote Link to comment Share on other sites More sharing options...
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