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Firstly, all Skywatcher Newts come to focus with a DSLR, and I think they
are the world's biggest selling brand of Newt. Obviously all astrographic
Newts do too. I think many GSO models don't.
I used my 8" Newt on my HEQ5 for visual and AP without any weight or
bulk related problems for seven years until age got the better of me. Occasionally a bit too much wind of course.
With my $5 D.I.Y. mod I could rotate the scope, and therefore always
have a comfortable focuser position, which you can't do with a refractor.
It has always puzzled me that people get so hung up on collimation; it
can be quite a way off before any signs will appear on your images. I
checked and adjusted if necessary my 8" two or three times per year.
My 10" collapsible was amazing, requiring only a tweak every six months
or so,[visual only].
Tilt can crop up on refractors too, so nothing to choose there.
raymo
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