Askar 131F - 131 mm f/7.5 Quadruplet Flat-Field APO Refractor - 131F Celestron SCT 15 kg gross weight with

15 kg gross weight with tube ring

Quadruplet air-spaced APO (including two ED glass)

The edge is knurled to increase the friction so that the installation and disassembly will be much easier

Paracorr can be used with both 2" and 1

the power is instantly cut off to protect your equipment from overvoltage

Askar 131F - 131 mm f/7.5 Quadruplet Flat-Field APO Refractor - 131F Celestron SCT 15 kg gross weight withAskar 131 mm Quad ED APO Flat Field Refractor Askar 131F Flat Field Quad Refractor Highlights The Askar 131F is a telescope OTA with an aperture of 131mm, a focal length of 983mm, and a native focal ratio of F 7. 5. It is designed for both visual observation and astrophotography. The quadruplet lens systemcomprising three front elements and one rear element, including one piece of ED glasseffectively minimizes chromatic aberration and supports 44mm