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seeing banding in darks

Hello forum, 
I just got a new camera. The OGMA AP26CC an OSC based on the IMX571 sensor. 

I built a darks library last night at -5C. 

I am seeing banding in the darks when I look at the masters in PIxInsight,
I took 20 darks in multiple exposure lengths (30, 60,90,120,180,300)

Do any of you have some insight into what is happening? 

I am attacheting a screen short from PixInsight and a link to a fits file in dropbox


Many thanks to anyone that can help explain what is happening here. 

Rick

Comments

  • Whoah... I am not familiar with that camera so I do not know what is normal.
    You may want to blink your dark frames and see if the pattern is fixed or not. If not, I would be likely to guess it is an electronic issue either with the camera or more likely cable. (Cable itself or crosstalk with other cables.)

    -the Blockhead
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