Focal Lenght 12.5 mm.

Designed for visual aiming of the telescope on celestial objects, tracking of these objects during photographing and measuring angles on the celestial sphere.

Is a well corrected from aberrations with a field of 50 degrees symmetric 4-lens eyepiece with astrometric grid in the focal plane. For convenience, there is a diopter shift to focus on the eye and reticle illumination with adjustable brightness and self-powered of the two elements G12 1.5 V.

Grid eyepiece has a scale for linear measurements. The diameter of the Central scale of 6 mm, division value is 0.1 mm. For accurate measurement is the special scale of seven strokes. The gaps between the dashes have a size of from 0.02 to 0.08 mm and allow you to measure smaller objects. The thickness of the strokes – 0.01 mm. Are also in the crosshairs of various sizes and configurations that can be used to track and evaluate linear and angular dimensions. Around the perimeter of the mesh caused a circular scale for measuring position angles.