|
All the advice about mounts, SCTs vs Newts vs Dobs etc. is all good. One thing to remember, though, going back to the OP question: the light-collecting power of an aperture is a function of area not diameter. An 8" Newt has a surface area of 50"; a 10" has an area of 78" - quite a significant difference.
A 12" has an area of 113" - more than double the 8" in terms of light-collecting power.
|