ZWO ASI071MC Pro - weird pattern in images

vichman

Hello all,

since several weeks I am experiencing a weird pattern that is visible in all images taken with my ZWO ASI071MC Pro camera.

For testing purposes I made several images with different optics, but the pattern is always identical at the very same position. So I assume it is an issue with the camera.

I added an example image for reference (normally the background should be black).

Vega.jpg

The camera was cooled down to -10C, anti dew heating was switched on.

I checked, there was no visible moisture or ice on the sensor glass or sensor itself.

Honestly, I am quite lost.

Has anyone seen something like this before?

What is this?

Thanks in advance for any hint, especially on how to get rid of this again.

Stefan

Support@ZWO

Hi Stefan, this is dew, you can follow this guide to redry your camera.

https://astronomy-imaging-camera.com/manuals/How_to_clean_ASI_camera_and_redry_the_desiccant.pdf