Hi, I've just started viewing the heavens for about a year and trying out some basic imaging using my Nikon D5500.
The scopes that I currently use are Sharpstar 90mm triplet apo (f/6.67) and GSO 200 mm classical cassegrain(f/12).
I currently don't have much time to spend all night imaging, so I'm doing visual observations mainly, but I'm very intent on imaging if I get enough time later on.
So I've upgraded my eq mount from CEM25P to GEM45 to support heavier loads and is now looking for a decent addition to my visual and imaging scopes.
I'm interested in refractors in 120~150mm range with focal lengths near 700~1000mm.
From the money per aperture stand point, these refractors do get very expensive pretty quickly, so I first wanted to thoroughly check if it's worth the investment.
So upgrading a 3.5" to 5~6" range apo refractors, do they offer drastic improvements in visual and/or imaging? What would they offer?