Your iPhone is already capable of capturing amazing photos and videos. Thanks to the Starscope adjustable iPhone mount, you can pair your smartphone with your monocular or binoculars to record birds, sports, and everything in between. It is designed to handle phones up to 110mm and monoculars with a 22 to 44mm eyecup.
The Starscope smartphone mount dual spring loaded to secure your phone. It has a large aperture not to block your phone’s camera.[where to find it]