I was thinking what to image during galaxy season (fall) during current good weather stream. I also wanted to test the CFF more in imaging set up. I have mainly used this instrument for visual on the planets in the past (years) since I own this telescope. SO I though of NGC206, which is a star forming region in the Andromeda galaxy M31. Quite an unusal target, because usually I target Arps, PGCs and whatnot... ;)
I used the CFF to collect luminance and infact this was a good descision. I compared some test shots on NGC7331 done with the TEC vs CFF and the CFF had the clear advantage. I would have not expected that, since in fotography I would have thought the aperature size needed to be larger to see an adequate difference.
The TEC was used to collect 35x300s on R/G/B in 1x1bin. I mostly used to image color in 2x2bin resulting in more burned out stars. I think going 1x1 and 5min single shots preserves the star colors quite well. In general I am quite pleased with the overall image considering this was done from the city with Bortle 7 to 8ish.
Enjoy
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