I have a Meade off axis guider body that I have used 1 time. This item couples to the back of a Meade SCT, and accepts a T-ring to connect it to a camera body. It is possible to use a guiding eyepiece on the top, and a small amount of light is diverted by a mirror in the body. The T-ring and guiding eyepiece are not included. I am selling it because I no longer image with 1-1/4" accesories. Perfect condition. $70.00 + shipping.