I have an Altair Astro Starwave 70ed f6 Travel Scope. I'm looking to pick up a field flattener for the scope to start some imaging with my DSLR.
I can see on the AA site you can buy a dedicated FF/Focal Reducer.. I'm not that keen on reducing the focal length. So I've been looking at just FF's . Can anyone advise what will work and not provide focus racking in/out issues?.
Thanks & Clear skies! Rob