I've attached an image of a bad flat, wondering if anyone else has see this kind of anomaly.
- Flats taken with AutoFlat.vbs
- The the image looks like the top quarter is from a different exposure
- This only happens to some of the first flat shots of a filter sequence, right after there has been a 64x64 test shot.
- camera is ZWO ASI-183
Any thoughts?
In theory the median filter applied to the flats would skip this.
Right now I have a hack in the AutoFlat.vbs to redo the first shot in a sequence.
Thx,
George