1.25'' dielelectric star diagonal

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

A standard measurement for accessories, expressed as 1.25 inches. 1.25" is equal to 31.8 millimetres.

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 telescope image is always upside down, but can be corrected using correction optics or mirrors.

Protects the eyepiece sleeve from damage.

Telescopes with a focuser at the rear end require an erecting lens to ensure a comfortable viewing position.