Optical Vision Tele Camera Adapter - 20512Tele Camera Adaptor for eyepiece projection photography. For astrophotography of the moon and planets through a telescope, a Tele extender is required. This Varible Tele Camera Adaptor slides in to the telescopes eyepiece holder, into which is inserted an eyepiece of typically 26mm focal length; a SLR body then couples to the Tele Adaptor by the means of a T Mount (required, not included). The Skywatcher Tele Camera Adaptor permits a range of