Quote:
Originally Posted by sassan
Then the next biggie is not infinity focus, if it is achievable. The main problem is that it can not be achieved, especially with certain brands (s.a. Canon) and on DSLR. This is due to "Flange distance" and mirrorless did really served us fine here. .
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Yes mirrorless has helped a huge amount. My Celestron telescope cant focus to infinity with a DSLR in prime focus mode. With a mirrorless its easy
I've never tried my DSLR on my Helios 1000mm scope just went straight to mirrorless. Despite the need for re-colimating the scope it works reasonably well with the tube tucked under my arm! I picked it up very cheap due to a dented tube, which has off-course got things out of alignment, so the two sides of the image focus at slightly different distances.