Vixen vs 2" filters

[LewisM]

Some experienced astronomers may have missed it in the beginners section, so restating the question here:

OK, so how do seasoned Vixen drivers get around using standard 2" filters in a Vixen system? I m talking photographically, not visually (visually, you add the Vixen 60mm to 50.8mm adaptor with compression ring and use a regular diagonal).

ALL threads in the Vixen photo tube system will NOT accept a standard photo filter thread. It's driving me nuts trying to figure it out, as I want to image H-alpha and O-III. I succeeded in "friction fitting" an H-a (Baader brand) previously, but I cannot get the O-III to fit (Orion brand) up against the T-ringinside the stepper ring.

Darned Vixen and their odd thread size!

I just don't know how short of taping a filter to the front of the flip mirror tube and using the through-tube for photos (but causing more vignetting not being full diameter)

[Poita]

Don't know about vixens, but I use a filter drawer just on the other side of my OAG. I looked at a VC200L a while back, and found this site interesting:
http://www.mikesastro.com/equipment.html
Click on the VC200L, has a complete pulldown and comments on fixing triangular stars.
Maybe the owner of the site could help you with the filters question?

[LewisM]

Decided to buy the Vixen 60mm to 50.8mm visual adaptor, use a GSO 2" dia. extension tube (I have several lengths) and a custom 2"full diameter T ring I had made. Can add the filter in the optical train somewhere at the adaptor :)

[Merlin66]

Did you check out the various Baader ( and TS) threaded adaptors??
http://www.telescope-service.com/baader/adaptors/adaptors.html#Large