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Guide scope or Off Off axis?
I am getting into AP and have an 8 inch SCT, i also own a ST80. with the focal reducer on the SCT the "F" ratios are similar between the scopes 6.3 sct and 5 st80. Is it more beneficial to have the guide scope at the same "f" ratio or greater. I am thinking about buying an off axis guider to keep the"f" ratio the same and reduce the weight/setup time. As the O.A.G. has a mirror in the focal stream does it impact on the quality of the images? it is all sitting on a HEQ5 so weight is not really an issue.
P.S. there was only supposed to be one Off in the title
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