|
I was also having the shutter pattern appear in short flat exposures with my ML8300 so got an adjustable lightbox from Pete. They're great. Also did lots of reading on the FLI Yahoo group and asked a few questions. I'm now doing the following which seems to be working well:
No RBI, and use High speed mode for flats (using Maxim)
Exposures of about 6 - 10 secs (longer for narrowband filters)
About 2/3 full well depth (around 35000adu for the ML8300)
Same length flat darks
About 15 flats and 20 flat darks - doesn't take long.
Sigma reject mean for master darks and master flats.
|