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Astrograph:Fast Newt vs Focal Reducer + RCT
Hi everyone, I've been researching with the intent of upgrading to an astrograph for months and months but I'm still not convinced I know enough to do this decision justice. My original plan was to build a 10" f/4 scope which would be versatile enough for bigger DSOs like M42 but also have the magnification power for galaxies and planetary nebulae.
My question is about the RC design astrographs which seem to be gaining popularity. Andews Comm have the GSO 8" f/8 RC astrograph for the same price as a Carbon Fibre 8" f/4 Newtonian astrograph, so what is the advantage of this design? Would an 8" f/8 RC with a .5x focal reducer perform equally to an 8" f/4 newt?
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