Focal Lenght 25 mm

Ultra wide angle eyepieces with a field of view 80° for telescopes represent a six lens system well corrected from aberrations within the angular field of view

The chromatism of magnification across the field does not go beyond 0.3%, the relative distortion: -14,8%, astigmatism is eliminated, the field is virtually flat and has no spurious light reflections

Eyepieces also have fixed aberration in the pupil, in connection with which the image of the field diaphragm is sharp edges and the eyes do not have to move in the transverse direction for observation of the peripheral areas of the field of view

Improvement of optical characteristics attained due to:

- increasing the number of lenses up to 6

- the use of lanthanum glass type “heavy crown” in the two power components (2 and 3)

- change the orientation of the lens (1)

The eyepieces have a valid plane of focus, which can be installed mesh, or cross threads

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