|
Its hard to comment on the Vixen as it usually gets great responses as a visual scope but not many images posted using one.
I suppose a google search or perhaps cloudy nights forum or somewhere else for images using one.
If you want my opinion I would not expect much difference between 100mm SW ED doublet and Vixen FL102 photographically. It will be subtle and the biggest difference will be the F9 of the Vixen versus the lower F ratio of the SW. So it will be less widefield.
I personally love fluorite lenses as they have a tiny improvement over ED glass (less light scatter - if you shine a green laser through the lens it will only show the mating element not the fluorite lens, but ED glass will scatter a small amount and you will see all lenses).
If you want more sharpness that often is more an issue with tracking. Most refractors are sharp. How accurate is your tracking and autoguiding?
If the errors in the tracking create elongated stars that also means the object you are imaging is also smeared and will lose sharpness.
Its tough advice as scopes are way more exotic than boring mounts but at the end of the day the mount is the more important piece of gear.
Greg.
|