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Hi,
I assume you are doing everything at prime focus. The problem you have is that you cant increase the chip size as it is fixed, all you can change is the focal length of the scope. You can try using focal reducers but how far can you go?
I guess if you didnt want to use a telescope and could somehow fix a telephoto lens to your webcam you may get a better field of view, say an 18 mm lens but what would the quality be like with so few pixels on the webcam.
Most people use webcams for planetary stuff or accept the magnified view they get.
If you want to see how your FOV changes with chip size and FL then download a free program called CCDCALC. It gives standard pictures of DSO's and you can vary the chipsize and FL to see what your result would look like.
Cheers
Paul
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