I'm looking at refractors in the 100mm+ aperture range that are also fast (F<=6) but perhaps more importantly, don't have chromatic aberration problems so that imaging with a L filter the stars are the same size as under R G and B. I'm seeing many scopes that claim "APO" but then in the user reviews, the blue channel gets bloated unless they use some kind of blue -cutting-out filter. I will be using a monochrome camera + filter wheel.
I know that some of these newer Chinese telescopes like the Askars and Sharpstars seem to fail this test, and their reducers make the problem even worse.
How does the Esprit 100 do in terms of chromatic aberration?
Any other similar scopes?
The whole point is to to be able to use the L filter to do LRGB imaging. Currently I do R G B imaging with my
camera lens umm I mean achromatic refractor, but the blue channel still needs fixing.