Diagonal prism T2 90°

Specifies the product's connection or connection thread on the telescope connection end. The same adapter dimension must always be available on the telescope.

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 amount of light that is reflected after striking the optical surface.

Used to connect a filter to the accessory.

Displays the back-to-front image correctly using a prism or a reversing lens.