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Miyauchi BS-77iB 20x77

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  • Binoculars Miyauchi BS-77iB 20x77
  • Binoculars Miyauchi BS-77iB 20x77
  • Binoculars Miyauchi BS-77iB 20x77
  • Binoculars Miyauchi BS-77iB 20x77
Manufacturer data

Manufacturer:

Miyauchi
web site

Distribution / Sales:

Ecotone
web site
Specifications
Manufacturer Miyauchi
Model BS-77iB 20x77
Lens diameter [mm] 77
Magnification [x] 20
Angular field of view [deg] 2.5
Linear field of view [m/m] 44/1000
Exit pupil [mm] 3.85
Eye relief [mm] 17.5
Min. focusing dist. [m] 20.8
Twilight factor 39.24
Brightness 14.82
Prisms BaK-4/Porro
Dimensions [mm] 320x180x120
Weight [g] 2580
Waterproof No
Nitogen filling No
Argon filling No
Image stabilization No
Tripod exit Yes
Focusing individual
Warranty [years] 1
Accesories
Price 5218
Additional information
Average rating (1 owners reviews)
Build quality
Optical quality
Accesories and usage
Value for money

Overall

4.75 Good
Owners reviews (1)
  1. Luis Gutiérrez
    Luis Gutiérrez 8 June 2023, 03:33
    Build quality
    Optical quality
    Accesories and usage
    Value for money

    Overall

    IP 187.131.x.x
    Owner since: 8 years
    Price: 900
    User profile: Semipro

    Cons: Only little chromatic aberration on very bright objects.

    Pros: Excellent contrast and more than enough sharpness. Helical focuser for the eyepieces is WONDERFUL.

    Summary: Very useful and fun 45 degree binocular Telescope.

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