Quote:
Originally Posted by Slawomir
However, if I put a reducer on my modest 4" f/6 scope and make it work at f/4.5, while keeping the same camera, I should be capturing data more quickly. Or I do misunderstand something fundamental here?........
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All you will get is a wider field of view over the same sensor. Unless you increase the aperture you will not be collecting more flux.
Google Stan Moore F ratio myth
