Quote:
Originally Posted by Logieberra
It depends if you are guiding through a separate guide scope, or via an off axis guider. I loved my $200 Orion SSAG through a wide field refractor. Never missed a beat. I was forced to pay 3 x that for an STi when I moved to a MMOAG, as I needed more sensitivity.
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I think you summed it up very well. I have been using Orion's SSAG with a 50mm guide scope for the last couple of years and it always worked. Now moved to an OAG and although SSAG can guide though an OAG at 570mm focal length, but just. With an OAG a more sensitive (and also cleaner) autoguider is needed.