Tech Specs at a Glance:Magnification Range: 30x w/ 65mm/85mm 35x w/ 95mm/115mmExit Pupil Distance: 21mmFunctional Temperature Range: -25C to +55CSubmersible To: 4mWeight: 50oz / 141gRefer to the "Technical Info" tab below for additional specifications.
Swarovski Modular Eyepiece BTX - 49903:A fixed magnification unit with two eyepieces.The BTX combines the visual power of both eyes with a revolutionary viewing experience. Crucial subtleties can be seen with the crystal clear optics, with every detail now fully on show. A forehead rest and angled view guarantee comfortable viewing for hours on end. The benefits of binoculars and spotting scopes are combined in the BTX eyepiece module. It presents vivid, true-to-life images and offers the comfort required for long-term observation.Through Completely New Eyes:Taking functionality to a new level: the BTX spotting scope system combines exceptionally flexible modularity with optical perfection. The objective lens can be changed to suit any viewing situation. Extreme detail recognition at crucial moments thanks to SWAROVISION technology and total ease of use ensure fascinating experiences in the great outdoors.Features:
SPECIFICATIONS
Magnification
30x (65mm,85mm)
35x (95mm, 115mm)
Effective objective lens diameter (mm)
65,85,95,115
Exit pupil diameter (mm)
2.2 (65)
2.9 (85)
2.7 (95)
Eye relief (mm)
21
Field of view (ft/1000 yds / m/1000)
112 ft / 38 m (65)
112 ft / 37 m (85)
96 ft / 32 m (95)
Field of view (degrees)
2.1 (65,85)
1.8 (95)
Field of view, apparent (degrees)
60
Shortest focusing distance (ft / m)
7.2 ft / 2.2 m (65)
12.5 ft / 3.8 m (85)
16.4 ft / 5.0 m (95)
Diopter correction at 8 (dpt)
> 5
Objective filter thread
M 67 x 0.75 (65)
M 87 x 0.75 (85)
M 97 x 0.75 (95)
Length (in / mm)
14.6 / 371 (65)
15.9 / 404 (85)
18.0 / 458 (95)
Weight (oz / g)
77.3 / 2195 (65)
88.8 / 2520 (85)
97.3 / 2760 (95)
Functional temperature
-13 F to +131 F (-25 C to +55 C)