Thanks Guys,
It's been easier to get underway that I thought (touch wood). Actually once you've become accustomed to running BMPs separate RGB splitsand PPM centre routines with the Toucam avis it's not much of a jump really to mono camera and filter wheel use - in fact it skips the R,G,B split step
...
Just took delivery too of a flip mirror which I hope to try out tonight.
cheers,