3 replies to this topic

[pyrasanth]

Tonight my ASI 6200 MM PRO developed an issue where 1x1 bin mode is behaving very strangely. The images when stacked have a weird pattern and when zooming the image is full of strange spots and noise. On a single sub the SNR seems very low.

 

2x2 bin mode & lower works just fine. I could remove the drivers and reinstall however I' thought I would get the forums opinion as to whether you think this might be a software or hardware issue.

 

I have sent the images to ZWO support. The integration is 11 frames, 1x1 bin gain 100 offset 50 and calibrated with a dark of same and bias. No flat was used.

 

I've attached a zoom of the center area as well.

 

Please let me know your thoughts.

 

   

 

 

[andysea]

I don't know what could cause the mesh pattern that I see in the first image.

The second image almost looks like ice crystals. Just a wild guess tho.

[Cryhavoc38]

Almost looks like a spiderweb

[pyrasanth]

I identified what caused the issue. The setting in NINA for cooling had been reset from 30 minutes slow cool down to 0 minutes. This caused what I suspect was either ice or condensation on the sensor which could not be dealt with with the dessicant in the camera. The error, for a reason unknown, did not show in the 2x2 bin subs but a closer inspection of these subs later revealed that they are noisy.