Lee, Colin and Greg,
Thanks for the comments. Much appreciated.
With the rotten weather we've been getting, I don't know when I'll get the needed Luminance frames......
Greg, the telescope is a custom 300mm RiDK f/8 unit from Officina Stellare, and the camera is a Moravian G4-9000. (The KAF 9000 has never been very popular, probably because of its RBI characteristics. However, it has a high QE for a CCD, 110,000e- full well, and 10e- RN. Pixels are 12micron)
The system resolution of 1"/px is a good match for the seeing I get at the Macedon site.
Mark
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