I use just an ordinary telescope, and I have a mount that tightens around the eyepiece. I slide my phone onto and position it with the camera on just to where it can look through the telescope. After that I can see space but what is necessary is using my phones "pro" functions on the camera. Fiddling with the ISO and Exposure of the camera. With saturn I had my phone set to an ISO of 50 and an Exposure time of 1/6th a second. A lot of information, if you need any other details let me know!