Quote:
Originally Posted by Spidy
Haha, yeah well, I can't say the same. My Edge HD needs exactly 146.05mm and I want to use the focal reducer but can't even get the rear collar (I think it's called an adapter plate) off as it seems to be stuck. Need to buy a strap wrench.
I thought astrophotography was meant to be fun? Well, I wouldn't know as all I've contended with so far are issues  |
Apparently the introduction of a filter to the optical path can also impact backfocus
I am already using the Enhance (it screws into one of the extension rings after the field flattener) so it seems to be fine for me, but if you need 146.05 exactly you may also need to account for the thickness of the filter glass... apparently. I think the Esprit has a small margin of error in the back focus rather than needing absolute precision.