Scopetronix sells a huge variety of adapters to couple various digital cameras to your telescope--essentially, the camera is coupled to an eyepiece to snap pictures. Though I haven't looked lately, Scopetronix also has (at least in the past) posted very informative information on which features are desirable in a digital camera. I used their information to choose a digtal camera (a Nikon Coolpix 995, which has served me well).
Also, consider installing Registax on your computer. This free (yes, free) software program takes several frames snapped in rapid succession and averages them, increasing the quality by averaging out the noise in each individual frame. In your browser's search engine, look for "registax" to find the web site.