The Olivon Universal Smartphone Digiscoping Adapter allows you to mount your mobile device onto just about any optic for capturing photos and video through its eyepiece. This adapter is designed for phones with a maximum width of 72mm (2.8"), and the distance from the bottom of the phone to the middle of the camera cannot be more than 125mm (4.9").
Ideal for telescopes, spotting scopes, binoculars, riflescopes, monoculars, or microscopes, it comes with a standard ring that will fit eyepieces with a maximum diameter of 44mm (1.7"), and comes with three rubber inserts—1mm, 2mm, and 3mm thick—that can be fitted into the inside of the ring to reduce the diameter for a more secure custom fit. Olivon offers larger ring options in 50mm (1.9"), 53mm (2"), and 61mm (2.4"), for eyepieces with wider diameters. The larger rings are available separately.