I need to realign the OTS after some experiments.
This is a natve pixel size RGB. Only corrected for flats and darks and then stacked. 66MB
http://d1355990.i49.quadrahosting.co...03/CAR_RGB.zip
Exposures are 20x4 minutes for each of RGB. I have been using the RBI flush feature of the PL16803 routinely and it definitely reduces 'noise' due to ghost images. Especially when dithering.
I discovered this after imaging the Horse Head in NII, I had two 'comets' in all subsequent frames of Thor's Helmet. These 'comets' just happened to be where Alnitak and Alnilam were. Their diffuse nature was due to the dithering.
Bert