Quote:
Originally Posted by Kirkus
Cool! Thanks Gary.
Would I be correct in assuming a smaller F/Ratio and/or larger aperture would increase the chances of finding a suitable star for tracking in the FOV?
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Smaller f ratio gives a larger field of view and not much else. An f5 80mm scope will have dimmer stars than a f5 120mm scope and hence less chance to find a guide staras it doesnt collect as much light. There has to be a compromise as the scope becomes bigger it gets heavier and more expensive. My compromise was to buy a 120mm F5 achromat and using my QHY guider I can always get a guide star with a 2-3 sec exposure no matter where I aim the scope.