Thank you for your reply. I uploaded images to google drive . I am not a specialist, but bias frame looks good (exptime = 0.0001 sec). All images are raw lights (uncalibrated). All images (unguided) has 60-sec exposure time. Except M57: 300 sec singleshot, guided. About specific exptime. Maybe. I saw this gradient on 10-sec images. Test flats also look strange with exptime = 0.02. I checked option Vdd, it was set to OFF. I tried different cables (the native one is too short). The images from Envisage I also uploaded to Google Drive.
May be, I always must to use filters (L, for example)? Or may be, I must to close side holes on the camera, where shipped the filter slide?

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Hello, people. I hope, you can help me with my Meade DSI 3 Pro camera. I'm new in CCD astrophoto. Last weekend I made some first test sky images with this CCD. What I got, you can see on attached screenshots. What can I do to get normal CCD images?
Some information about my setup.
My astrophoto laptop is Acer Aspire One with Debian Buster.
The software was ccdciel with INDI built from sources.
The telescope is a apochromate 80/480, the mount is HEQ5 Pro. 

Hello, people. I hope, you can help me with my Meade DSI 3 Pro camera. I'm new in CCD astrophoto. Last weekend I made some first test sky images with this CCD. What I got, you can see on attached screenshots. What can I do to get normal CCD images?
Some information about my setup.
My astrophoto laptop is Acer Aspire One with Debian Buster.
The software was ccdciel with INDI built from sources.
The telescope is a apochromate 80/480, the mount is HEQ5 Pro.Hello, people. I hope, you can help me with my Meade DSI 3 Pro camera. I'm new in CCD astrophoto. Last weekend I made some first test sky images with this CCD. What I got, you can see on attached screenshots. What can I do to get normal CCD images?
Some information about my setup.
My astrophoto laptop is Acer Aspire One with Debian Buster.
The software was ccdciel with INDI built from sources.
The telescope is a apochromate 80/480, the mount is HEQ5 Pro.

Hello, people. I hope, you can help me with my Meade DSI 3 Pro camera. I'm new in CCD astrophoto. Last weekend I made some first test sky images with this CCD. What I got, you can see on attached screenshots. What can I do to get normal CCD images?
Some information about my setup.
My astrophoto laptop is Acer Aspire One with Debian Buster.
The software was ccdciel with INDI built from sources.
The telescope is a apochromate 80/480, the mount is HEQ5 Pro.Hello, people. I hope, you can help me with my Meade DSI 3 Pro camera. I'm new in CCD astrophoto. Last weekend I made some first test sky images with this CCD. What I got, you can see on attached screenshots. What can I do to get normal CCD images?
Some information about my setup.
My astrophoto laptop is Acer Aspire One with Debian Buster.
The software was ccdciel with INDI built from sources.
The telescope is a apochromate 80/480, the mount is HEQ5 Pro.