If you want to get more magnification than direct coupling of your webcam to your telescope will provide, you can use this eyepiece projection adapter to increase image scale (magnification) by coupling the webcam directly to many 1.25" eyepieces.
This adapter can slide onto many 1.25" eyepieces (maximum eyepiece diameter cannot exceed 38mm or 1.5"). 3 nylon thumbscrews allow you to precisely center the eyepiece in the adapter. A webcam coupled to a webcam-1.25" adapter (sold separately) slides into the upper end of this adapter. This coupling adapter thus offers a versatile range of camera positions to vary image scale. This is designed for lightweight webcams and is not for use with heavy CCD or film cameras.
Made of aluminum with a black anodized finish. Has 3 nylon thumbscrews at the bottom for eyepieces and 1 nylon screw at the top to secure the webcam adapter.
Purchased separately, a webcam-1.25" adapter and this projection coupler will cost you $45. You can buy both together and save $5.
The main product photo above shows this eyepiece projection coupler. The second photo (click "More Photos" to view) shows a webcam-1.25" and a 1.25" plossl eyepiece inserted into this coupler for eyepiece projection photography.