This invention comprises an adaptor device for connecting an electronic device having a camera to a range of optical devices, including but not limited to binoculars, monoculars, riflescopes, spotting scopes, telescopes, and microscopes. This adaptor device has a plurality of protrusion that provide a self-centering and fitted connection between the electronic and optical device, so that the optical axes are aligned so that the user may take images or video on their electronic device through the optical device. The structure of the adaptor device allows the adaptor to fit a range of differently sized optical device, denoted by the diameter of the eyepiece end of the optical device.