2", 1.7X Newtonian glasspath corrector, with built-in coma corrector

The connector or thread found directly on the camera. With this information, you know whether the camera already fits the telescope, or whether an adapter is required.

The optical elements are treated with ultra-thin coatings. Among others, there are anti-reflective coatings for reducing, and dielectric coatings for increasing reflection.

The optically effective length of the component.