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What about the remaining question about the correction frequency (up to 10 Hz), ignoring the location of the guide star wrt the object of interest.
If you have a 2 seconds capture time per frame, then your max correction frequency is 0.5 Hz (ignoring the nyquist freqs ect).
Would you really be able to go for 0.1 s per frame?
I am using Metaguide (and QHY5L-ii), with a capture time of 0.125 s/frame, but then I stack 5 or 7 frames to provide a single correction signal. I am able to find guide stars with my OAG but it is pushing the limits already. Not sure if I would be able to lowering the stack to 1 or 2 frames and still have a decent correction signal.
So how would you go about to increase this? Larger diameters, even more sensitive guide cameras (or even a 'proper' camera used for guiding)?
cheers,
Bram
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