Cabelas Digiscope adapter around $40. Sony camera. I have to use the 2 second auto timer to keep the camera still durning the picture. Just pushing the button moves the camera a ton.
canon powershot with Zhumell Universal Digiscoping Adapter (large).
I also always pre-focus the camera (push button part way down) then I know when i press the button the rest of the way down it will actually take the photo at that moment. seems like the slightest movement throws it off sometimes.