Resolved Weird dark frame artifacts

Discussion in 'Aluma AC Series CMOS' started by mike shade, Dec 8, 2022.

  1. mike shade

    mike shade Cyanogen Customer

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    Sep 14, 2015
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    163
    Raw .fit file, Aluma AC4040/FW&-STX/SC3/Maxim6.28, temp -30, cooler power 84%. This is a 600" dark, binned 1x1, High Gain Stackpro. There seems to be a problem. Anyone know what this streak is, and how to fix it? It is BTW also on a 5" dark frame. Also a 5" dark in high gain, and a 5" dark in HDR. It is not in a 10" no flat High Gain Stackpro light frame, it is not in a 10" simple auto dark High Gain Stackpro light image.
     

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  2. Doug

    Doug Staff Member

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    Sep 25, 2014
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    Please check whether the shutter is closing completely.
     
  3. mike shade

    mike shade Cyanogen Customer

    Joined:
    Sep 14, 2015
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    163
    That may have been the issue. Powered everything off...do not see the white streaks like I did...but there are now dark streaks, in what looks like the same spot not sure if this is normal/expected with this camera. The darks 1x1 and 2x2 have them as well as the 1x1 and 2x2 bias frames. Dark is a 2x2, 10 minutes high gain stackpro mode. If there is an issue with the shutter not closing properly or all the way, is there a fix for that or does the camera need to come back to you folks?
     

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  4. Colin Haig

    Colin Haig Staff Member

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