The Canon EOS T ring, by Revelation, simply replaces the lens on your EOS camera allowing you to connect a T adaptor then image directly through your Telescope. The EOS T ring fits all the Canon EOS range including:
This adaptor will fit all the popular Canon EOS Digital SLR Cameras including the 5D, 7D, 20D, 40D, 50D, 300D, 350D, 400D, 450D, 500D, 550D, 1000D
Simply choose either the Revelation 1.25" or 2" T adaptor to connect your camera to your Telescopes focuser. ETX90/125 owners should choose the Meade #64 T adaptor.
A nice metal T adaptor with adjustable inner ring (via three small screws). Bought this to connect a Canon EOS 600D to a Celestron Nexstar SLT 127 which it does perfectly. With the SLT this is the only attachment you need to fix it to you camera and the magnification is then similar to that with the 25mm lens.