Focus Problem

[Neil McRae]

I wonder if anyone can help me with a focus problem I am having.

I bought a skywatcher ST80 as a guide scope.

When I attach it to my web camera (Philips SPC900NC) and use PHD for tracking the only way I can achieve focus is by having the diagonal fitted and a 2X barlow then the webcam. Tracking is ok BUT by having to use the Barlow I am cutting down my field of view.

Has anyone else come across this "problem" or is there a way to cut out the Barlow ?

Neil

[1981suede]

You could try an 80mm extension tube?

[Tinker1947]

I think i have read, they take the glass out of the Barlow..??

[Neil McRae]

Thanks Tinker and 1981 suede I will give this a go if the clouds clear tonight.

Neil