Camera Banding? Can anybody tell me what and why this is?

Sony IMX571 (mono) CMOS Artifacts
6 replies•339 views
Anderl avatar
Anderl avatar
Fellow friends of the night sky, 

I decided to use my time under the full moon to get some star clusters on my imx571 mono. 
this is a single green filter frame 300 sec, cooled to -10c, esprit 120, from tonight.
i have never seen such a pattern in any of my frames, neither the frame before nor the frame after have this pattern in it. 

time to get a new camera?

cs
anderl

andrea tasselli avatar
andrea tasselli avatar
Just a glitch in the read-out. Possibly some form of external noise. S*** happens…
Anderl avatar
Anderl avatar
andrea tasselli:
Just a glitch in the read-out. Possibly some form of external noise. S*** happens...

Hey andrea,

thank you! 

you mean something like wlan, Bluetooth etc.?
i know, never ask llms if you want to know something but gpt told me that maybe the sensor got hit by cosmic rays
andrea tasselli avatar
andrea tasselli avatar
Yes, never ask the AI scumbags about anything too technical. No cosmic ray hits, the periodicity suggest a signal modulation either from some part of the camera or across some form of antenna/cable. And, yes, I have seen this before but not with CMOS sensors. Easy to remove with digital filtering, tbh.
Dunk avatar
Dunk avatar
it could be the usb cable also - first thing I'd test.
Tim Ray avatar
Tim Ray avatar
I am thinking along with Dunk. Could be a cable or a hub.  Try a new cable from camera to NUC or ASIAir or Laptop. Try to avoid any other connection. External hub, thru mount cabling, etc should be avoided.  If the problem is corrected, then start the backwards troubleshooting to isolate what caused the problem… I have had horizontal lines from under exposed subs but never these vertical lines.  Good luck. Please keep us posted on your efforts!

CS Tim
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Oskari Nikkinen avatar
Oskari Nikkinen avatar
I have seen similar banding on subs that took place when the hard drive was in heavy use (was stacking a test image while capturing more data). Some sort of USB or data corruption gremlin. If this does not happen often then nothing to worry about, but do consider trying another cable like was already suggested.
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