Binoculars, Giant Astronomical Binoculars, Porro Prisms

RS 6 20×80 A1 Individual Eyepiece Focus Binoculars

分类： Binoculars, Giant Astronomical Binoculars, Porro Prisms

Features and Benefits

Fully Broadband mulit-coated lens and Porro Bak4 prisms
High light-transmission, full exit pupil and long eye relief
Lightweight aluminum alloy frame with armored rubber for grip and great durability.
Individual eyepiece focus for the most precise adjustments.

Model	8x40IF / 7x50IF / 10x50IF / 12x50IF / 25x100IF/ 15x70IF / 20x80IF
Magnification	8x / 7x / 10x / 12x / 25x / 15x / 20x
Objective Diameter (mm)	40/50/50/50/100/70/80
Field of View	(137m/438ft)–(122m/390ft)—(112m/358ft)— (87m/262ft)—(42m/134ft)—(73m/234ft)—-(57m/182ft)
Exit Pupil (mm)	(4.8) / (7) / (4.9) / (4.2) / (4) / (4.6) / (4)
Eye Relief (mm)	(19.6) / (24.35) / (18.64) / (18.57) / (16.5) / (17.8) / (16.5)
Relative Brightness	(23.04) / (49) / (24.01) / (17.64) / (16) / (21.16) / (16)
Interpupilary Distance (mm)	54-73

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