Vixen Telescope AX103S Optical Tube Assembly

Highly advanced "photo andvisual" optical design, the flagship of Vixen SD apochromatic refractors.

Vixen AX103 features a three element objective lens, incorporating an SD lens in its center, and the fourth lens inside of the focuser drawtube. This advanced optical design produces crystal-clear, sharp and high contrast images with no trace of falese color. In spot diagrams of the AX103S, the star images are extremely concentrated and are seen as small as 20 microns at the edge of ther file of view. The precision multicoatings applied to each surface to the lenses enhances visible light transmission to 99.5% on any single surface. An optional AX103 reducer which produces fast F5.6 forcal ratio is best for imaging of deep sky objects.