Quote:
Originally Posted by Shiraz
Hi Peter
Suggest that you use a fast scope with the Trius to get the best out of it. A fast Newtonian makes sense, but as you say, there is not much back focus to play with from the coma correctors in wide use. The one that does provide a fair bit is the RCC1 (91.5mm) - it is very low end (so build quality might possibly be a bit variable?), but it seems to work well over a small field and might be something to consider if you needed lots of back focus and were prepared to assemble you own system (see above comments).
regards ray
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Hi Ray,
I find the RCC1 to be excellent value for money.
I have still yet to really nail the distance to the CCD chip
but I can adjust it further with a Varilock adjustment sleeve from opt.
using CCD inspector.
see here:
http://www.flickr.com/photos/2471943...in/photostream
Also this guy -Detlef Hartmann - gets some nice pics with his:
http://www.astrobin.com/users/DetlefHartmann/
cheers
Allan