White screen when webcam hooked up :(

I just bought a SPC900NC off astromart...installed the softwre CD..and using AstroCapture to control it...worked beutifully when I used it indoors without a telescope..but when I put on the adapter and hooked it up to the telescope...I looked at trees maybe 1000 feet away through a glass window, and had a white screen...wasnt able to get it to focus...focusing from infinity to close focus and still nothing. Any suggestions? The guy I bought it from told me it was modified..
thanks

If it worked OK indoors without the scope, it should work fine
with the scope. Are you sure it is pointing where you think it
is -- were you possibly pointed at blank sky above the trees?
These typically have a very narrow field of view due to small
chip. Try placing a 6mm eyepiece in the scope and see where it
is pointed.

Try turning the gain / brightness / exposure times lower so
you see some grey levels -- not just pure white.

It is possible it is not reaching focus with the scope.
This is pretty common problem with cameras.
Try adding or removing any star diagonal in the light path.
Put a piece of paper behind the focuser and see where the
focal plane is located; you will need the CCD chip at this
same location.

mike selz said:

I just bought a SPC900NC off astromart...installed the softwre CD..and using AstroCapture to control it...worked beutifully when I used it indoors without a telescope..but when I put on the adapter and hooked it up to the telescope...I looked at trees maybe 1000 feet away through a glass window, and had a white screen...wasnt able to get it to focus...focusing from infinity to close focus and still nothing. Any suggestions? The guy I bought it from told me it was modified..
thanks

Yeah, cut way back on the exposure, and focus again.