Refractor on top of reflector, possible?

[nicks90]

As a giant finder a 70mm F/5 can be used very effectively, see my post here:

http://stargazerslou...ted-cross-hair/

I could find WAY more objects like that than with the 6x30 standard issue Celestron finder. I intend to use this as a guider as well. A fast little frac like the Mercury-705 is much better than the slower 709 type, certainly as a finder (the latter gives at most 1.7deg FOV). The larger FOV also makes finding guide stars easier.

it was your post linked above that prompted me to mount my cheapo 70mm frac on my newt!

although i am using a 25mm kellner EP in it at the moment, which only gives me x14mag and 3.7deg fov - but i am working on sourcing a 30mm plossl which should improve that slightly.