APM MS 28×110

Specifications:

Objective diameter:  110 mm
Magnification:  28 x
Exit pupil: 3.9 mm
Eye relief (acc. to spec): 15 mm
IPD:  53 – 74 mm
RFOV:  2.3  degrees = 40 m
AFOV (according to spec.):  64 degrees
Focus type:  IF
Minimum focus distance (estimate): ca. 100 m
Range of diopter adjustment (acc. to spec.): +/- 5 dpt
Excess focus travel beyond infinity position (estimate): 6 dpt
Prism system:  Porro I
Waterproof: yes
Weight (with eyepiece cover and objective caps): 6‘300 g
Made in: China

Remarks:

A beast!! Over 6kg, it requires a solid mount and tripod of the sort used for small telescopes. With its 110mm objective lenses, it provides a wonderfully bright image and great displays of the moon, Jupiter and its moons, or Saturn. This model is sold in almost identical versions under several different brands (e.g. Helios Apollo, Omegon Brightsky TS Optics 28×110):  unfortunately, these are all only available in non-ED glass versions **, so they display a bit of chromatic aberration; precise eye placement behind the eyepieces is advised to reduce the effect as much as possible.

** more recently, a version with ED glass has been made available by APM, which is supposed to provide better CA correction and contrast.

Ratings: