Image celestial or terrestrial objects with this smartphone adapter. With its light rigid frame, this accessory allows you to connect any smartphone to any telescope eyepiece with an outside diameter of 45 mm or smaller. The additional magnification provided by the eyepiece allows your phone to capture great images of the Moon and planets.This smartphone adapter installs easily by clamping over the top of an eyepiece. The smartphone is held in position with the help of tightening knobs that securely lock your phone in place. Some large and/or bulky phone cases (including folio style cases) may need to be removed for the phone to fit in the adapter.