Diagonal prism 2" ClickLock BBHS®

The position in which an observer looks into the telescope or through the accessory. Usually the position is at an angle of 90°, 45°, or is straight.

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

BBHS® stands for broad band hard silver.

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.