Solomark 2inch Cellphone Universal Digiscoping Digital Camera Telescope Spottingscope Adapter Compatible with most 2" eyepieces (with housings up to 61mm in diameter) Suitable for telescopes, spotting scopes, binoculars, night vision devices, microscopes, range finders and similar constructed optical devices. Ideally suitable for pictures and video clips of animals, people, birds and planes in great distances Solomark Deluxe Clickstop Camera adapter has to be connected to the eyepiece of the optical device (telescope, spotting scope, etc.) by using its sturdy clamp mechanism. Together with Smartphone Clamp, it can take phone with Mobile Phone