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KOWA 30x77 PROMINAR Straight

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KOWA 30x77 PROMINAR Straight Details

KOWA TSN-774 PROMINAR Fluorite Straight + TE-17W (30x) Eyepiece
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KOWA 30x77 PROMINAR Straight Specifications

Spotting Scope SeriesKowa TSN-770
Body typeFixed
Variable magnificationNo
Minimal magnification-
Maximal magnification30x
Lens diameter77 mm
Min. exit pupil diameter
Max. exit pupil diameter2.6 mm
Min. eye relief
Max. eye relief (mm)20 mm
Minimal field of view
Maximum field of view42 m/1000m
Minimal field of view (deg.)
Maximal field of view (deg.)2.4°
Min. field of view apparent
Max. field of view (apparent)
Close focus5 m
Twilight Factor48.1
Relative Brightness6.8
Light transmission
Lens coatingFully Multicoated
Diopter range
Photo adapterNo
Objective treadYes
Temperature range
Filled withNitrogen
Width90 mm
Length318 mm
Objective diameter
Eyepiece diameterNo
Eyepiece angle
Tripod adaptableYes
Weight1430 g
In production since
Warranty30 years
Made inJapan
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