[Andy01 (Andy)]

Folks, the problem continues - here is a sequence of 5 consecutive 30sec "t-shirt" sky flats (ie: white t-shirt stretched over the objective).
These images were taken through the 5nm Astrodon Ha filter, one after another, in sequence, no changes were made to anything during the capture sequence.

Paul/Lewis, a screenshot of the last frame shows the TEC settings at -30C, 68% ambient temp 19.

James/Tigerdes, what is a "mean ADU"?

You can clearly the sequence starts normally, as frames 5-7 are "normal but the banding appears on frame 8 and gets worse on frames 9 &10.
(I didn't post frames 1-4, as they're the same as 5-7 - let me know if you want to see them).

Same stripes appear through the O3 & S2 filters immediately when taken afterwards on the same settings.

QSI support have asked to see the fits files for analysis by their lead engineer, so I've dropboxed them as requested.

This has been going on intermittently since december last year. The camera is less than 12 months old, I'm hoping the camera doesn't need to be sent back to the states again!