[AlexN]

Soon enough I'll be delving into the world of narrowband imaging, and would prefer not to have to screw on and off filters all night... So I'll be looking for a 4 or 5 position filter wheel... It will need to accept 2" threaded filters...

Can anybody recommend one, where to buy and how much I'd expect to pay.

Thanks..

Oh, Also, Wheres the cheapest place to buy both an Astronomik SII and OIII filter?

Cheers.
Alex.