Objective diameter:  80 mm
Magnification:  20 x
Exit pupil: 4 mm
Eye relief (acc. to spec): 15.5 mm
Usable eye relief (measured from rim of eyecup): 12 mm
IPD:  56 – 72 mm
RFOV:  3.2  degrees = 56 m
Focus type:  CF
Prism system:  Porro I
Waterproof: yes
Weight (measured, with eyepiece cover and objective caps): 2‘506 g
Made in: China


The “Pro” edition of the Skymaster 20×80 provides a slightly brighter image and slightly better central sharpness than the regular version. Both exhibit quite a bit of chromatic aberration, and they feature a relatively small sweet spot and a slightly yellowish image. See the review mentioned below.

see also separate posts:
Celestron Skymaster 20×80, https://binocular.ch/celestron-skymaster-20×80/
Celestron Skymaster 25×100, https://binocular.ch/celestron-skymaster-25×100/



see review section of separate post „APM MS 20×80 ED“,


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