![]() ![]() ![]() I use a Baader Maxbright binoviewer that is a little too long on backfocus requirement for the VMC260L OTA-around 150-164mm depending on eyepieces used and which one of their T2 diagonals is used. The model evidently uses a primary mirror-moving design to focus like traditional SCT's (unlike their smaller 8 inch VMC200L model which evidently uses a fixed primary mirror and Crayford drawtube focuser to reach the focal point). Problem: states the backfocus of this model as 149.6mm. a Newt.), I have one pesky thing left I need guidance on to make sure I'm understanding this OTA correctly: After gleaning through all the posts here and weighing the pros and cons of this scope for my usage needs (mostly visual deep-sky use, transported to dark-sky sites, light weight needed due to surgical lift/carry restrictions, but an OTA that still has plenty of aperture and is easier to observe through vs. ![]() I'm considering purchasing one of the newer-issue Vixen "white-tube" VMC260L 10 inch Cassegrain OTA's. ![]()
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