Focal Lenght 15 mm

Wide-angle eyepieces with a footprint of 1.25" and a field of view of 65° for telescopes of all systems represent the five-element system of the type Erfle different from the classic use of glass type lanthanum crowns and heavy flint, to improve the image quality on the edge of the field of view

Eyepieces are well corrected from aberrations within the angular field of view

All lens surfaces have multi-layer coating

Eyepieces have threaded fit under standard filters and are fitted with rubber eyecups