It has a T2 thread on the camera side - standard for the easy adaptation of your camera. To take photos with a DSLR camera, you only need a matching T-ring - and thats everything.
When the light passes through the off-axis guider, a small amount is deflected via a small lateral prism. An additional opening now lets you use your reticule eyepiece or an auto guider. You can then get started immediately after you have found a suitable guide star in the field of view.
An off-axis guider provides an easy way of guiding the telescope for taking your astronomy photos. 2 nosepiece with safety groove to stop lens falling out.