Quote:
Originally Posted by rustigsmed
very nice Marc,
i notice you are getting away with quite short Ha subs ... most people seem to go about 5x longer?
Cheers
Russ
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Thanks Russel.
The QHY9 has quite a low read noise so I can get away with it. These 3 clear nights we had, I was collimating the scope and also collecting a lot of data for the temperature compensation of the focuser. I'm doing this because I need to work it out for the FSQ next. The newt CFZ is a lot easier to play with.
So the shorter subs allowed me to get a lot more points as I was refocusing very often, monitoring the FWHM. The third night I had enough points in the temperature logs to fit a line in Excel and I only did minor adjustments to the automated process. That's why all that stuff was shot in 2min subs.
