Askar 131F - 131 mm f/7.5 Quadruplet Flat-Field APO Refractor - 131F Celestron SCT The smooth rack and pinion

The smooth rack and pinion design is incorporated into the focuser to provide super fine adjustability for critical focus

Paracorr can be used with both 2" and 1

A retractable dew shield protects the lens from damage and also keeps light from bouncing off of the optics

77 arc seconds Light Gathering Power (Compared to human eye) 459x Secondary Mirror Obstruction None Secondary Mirror Obstruction by Diameter None Secondary Mirror Obstruction by Area None Optical Coatings Fully Coated Optical Tube Length 1295mm (51") Optical Tube Diameter 171

This silicone jacket in Marine Blue is customized for the Kite APC 42 Image Stabilized Binoculars

Askar 131F - 131 mm f/7.5 Quadruplet Flat-Field APO Refractor - 131F Celestron SCT The smooth rack and pinionAskar 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