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Old 05-08-2018, 11:17 AM
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Slawomir (Suavi)
Amateur Photon Collector

Slawomir is offline
Join Date: Sep 2014
Location: Proserpine
Posts: 3,050
Although I know very little about planetary imaging, I think that one needs to also take into account diffraction limit for a given aperture. 250mm aperture has a diffraction limit of about 0.5", so I believe there would be little advantage in going lower than that with arcseconds per pixel for this aperture, even in perfect seeing. Accurate and precise collimation is also a definite must for achieving highly detailed images.
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