533 MC Pro Flat Frames

V39c9pIt

Hey, I have issues with the flat frames of my 533 mc pro. They are really colorful and have some weird shades at the bottom and top (all of this independent from camera orientation and filters etc). Those patterns are also in stacked non-calibrated images, but if I use the flats to calibrate, they overcorrect very much.

Tech@ZWO

To better understand the issue, could you let me know how your ASI533MC Pro is connected to your system? Specifically, are you using it with a dedicated filter wheel, and is it connected to a mount, PC, or another device? This will help in troubleshooting the flat frame issue you're encountering.

V39c9pIt

Tech@ZWO
I'm using a filter drawer, but the flats look like this even without any filter. Camera is connected to the Asiair Plus. I found a way to get kinda normal looking pictures through processing but you would also say that those colors are strange right?

Tech@ZWO

V39c9pIt
The color is normal, and this problem can be solved by flat field.
If you are asking about the top and bottom edges, please use the camera cover to flat field to see if it can be solved.