Need Refractor Tube Source

I need a source for refractor tubes. Apogee is currently out.

I recently bought an 80mm F9.4 lens from Stellervue along with a focuser. In the ad for the lens it states that the lens and the focuser mate to a 90mm tube. The lens cell and the focuser actually have a 100mm outer diameter -- perhaps "90mm tube" means a tube that is common for a 90mm objective.

If I manage to locate a threaded 100mm tube, the whole project should be very easy.

One other issue -- the lens cell is not adjustable -- at F9.4 can I get away without adjustment?

--Ian

There is absolutely no need to have an adjustable cell for an F9 lens. Such a lens has a wide field of good image quality. Just cut the tube off as square as you can, and it will be good enough.