DOCTER DOCTER®sport 8-25x50 - Manual (Page 9)

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Technical data DOCTER ® sport
3-9 x 40 3-10x40 4,5-14 x 40 8-25 x 50
Magnification range 3-9 3-10 4.5-14 8-25
Free lens diameter in mm 40 40 40 50
Diameter of centre tube 25.4 (1”) 25.4 (1”) 25.4 (1”) 25.4 (1”)
Diameter of lens tube in mm 47 47 47 57
Diameter of eyepiece tube in mm 40.4 40.4 40.4 40.4
Total length in mm 328 328 339 410
Total length in inch 12,9 12,9 13,35 16,1
Weight in g 515 515 625 775
Field of view in m/100 m (depending on
magnification)
11.4–3.9 11.4-3.8 7.8-2.6 4.4-1.5
Daylight light transmission
≥90% ≥90% ≥90% ≥90%
Twilight light transmission
≥86% ≥86% ≥86% ≥86%
Parallax-free observation distance in
yard (1y =9.15m)
100 100 50 - ∞ 50 - ∞
Centre of vision in mm
>75 >75 >75 >75
Vertical / lateral adjustment value in
mm/100 m per click
7 (1/4”) 7 (1/4”) 7 (1/4”) 3.5 (1/8”)
Total adjustment range vertical / lateral
in cm/100 m
150 150 100 56
Eye defect compensation in dpt
±2.3 ±2.3 ±2.3 ±2.3
Operational temperature range in °C
-25 to +40 -25 to +40 -25 to +40 -25 +40
Operational temperature range in °F
-15 to +110 -15 to +110 -15 to +110 -15 +110
Storage temperature range in °C
-40 to +55 -40 to +55 -40 to +55 -40 to +55
Storage temperature range in °F
-40 to +130 -40 to +130 -40 to +130 -40 to +130
Water tightness at 1 m depth watertight watertight watertight watertight