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Firstly, Sharpcap or FireCapture are both free camera capture software used by many astrophotographers.
Secondly, it could be the camera is not at the focal point for the focuser on the telescope. Because of the small sensor size it may mean your focuser can't wind in far enough to focus properly. Equally it could be focusing just fine, also because of the small sensor size the magnification amount is huge and as you increase magnification there is a rapid degradation/blurring of the image as atmospheric conditions affect what you can see clearly. eg look at the moon with a 20mm eyepiece or 10mm and it should looks clear and sharp to your eyes but if you have a 6mm eyepiece or smaller it'll look swimmy and blurry. webcams tend to behave approximately like a 5mm eyepiece and they only see a small area inside that field of view. Its why you need to capture video then stack the best few hundred frames to try to average out the blur movement and run wavelets to focus or sharpen up the resulting data.
Its not like taking a photo of you dog in the backyard with a regular camera.
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