Hi Sharkbite. Hmm, interesting indeed.
Do you unscrew the 1.25" nosepiece from the projector and screw in the 2" camera adapter instead?
That would have the same effect as moving the mirror wouldn't it. It does seem, as many IIS posters have discovered, that you need to get closer, or use a Barlow to put the focal point further out from the focuser.
Do you think it's due to the extra length of the projector that you cant get close enough for prime focus? That seems to make sense to my sketchy grasp of what's happening with this approach.
Hey, I think I'm learning something here!
Cheers
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