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Product selection

ATX / STX / BTX spotting scope set

Model Selection
Product selection
Eyepiece
  • BTX eyepiece module
Objective
  • 65mm objective moduleCHF 4’030.00
  • 85mm objective moduleCHF 4’770.00
  • 95mm objective moduleCHF 5’230.00
  • 115mm objective moduleCHF 6’130.00

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This product is currently not available to order from our online shop. Please contact a local retailer.

This product is currently not available to order from our online shop. Please contact a local retailer.

Product description

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.

What to consider when choosing your spotting scope

Objective lens diameter

The objective lens diameter specifies how much light can enter the optics. This makes it a key factor in an instrument’s performance, for example, in twilight. The bigger the objective lens diameter, the more light the objective lens can capture. The darker the surroundings, the larger the objective lens diameter needs to be. Check the precise product name as the number after the ‘x’ specifies the objective lens diameter in millimeters. For example, a device with the suffix 10x42 has an objective lens with a diameter of 42 mm.

Variable magnification

Variable magnification makes it possible to adjust the magnification flexibly within a specific range. In contrast to fixed magnification, it allows you to zoom from the lower value to the higher value. However, as the magnification increases, the field of view, i.e. the image section, becomes smaller. Check the precise product name as the number in front of the ‘x’ specifies the magnification. For example, 30-70x95 is a device with a variable magnification from 30x to 70x.

Field of view

The field of view describes the size of the image section that can be seen through the optics. This is specified either in meters (width) at a distance of 1000 meters (m/1000m), or feet (width) at a distance of 1000 yards (ft/1000 yds), or as an angle (degrees). The higher the magnification, the smaller the field of view.
Binoculars have a large field of view, which means you can see a wide area. Spotting scopes have a higher magnification, which makes the field of view much smaller, but you can see more detail.

Weight

The weight specifies how heavy or light the device is (in grams or ounces). Do you intend to do a lot of walking? Lightweight equipment is a priority in this case.

What to consider when choosing your spotting scope

Objective lens diameter

The objective lens diameter specifies how much light can enter the optics. This makes it a key factor in an instrument’s performance, for example, in twilight. The bigger the objective lens diameter, the more light the objective lens can capture. The darker the surroundings, the larger the objective lens diameter needs to be. Check the precise product name as the number after the ‘x’ specifies the objective lens diameter in millimeters. For example, a device with the suffix 10x42 has an objective lens with a diameter of 42 mm.

Variable magnification

Variable magnification makes it possible to adjust the magnification flexibly within a specific range. In contrast to fixed magnification, it allows you to zoom from the lower value to the higher value. However, as the magnification increases, the field of view, i.e. the image section, becomes smaller. Check the precise product name as the number in front of the ‘x’ specifies the magnification. For example, 30-70x95 is a device with a variable magnification from 30x to 70x.

Field of view

The field of view describes the size of the image section that can be seen through the optics. This is specified either in meters (width) at a distance of 1000 meters (m/1000m), or feet (width) at a distance of 1000 yards (ft/1000 yds), or as an angle (degrees). The higher the magnification, the smaller the field of view.
Binoculars have a large field of view, which means you can see a wide area. Spotting scopes have a higher magnification, which makes the field of view much smaller, but you can see more detail.

Weight

The weight specifies how heavy or light the device is (in grams or ounces). Do you intend to do a lot of walking? Lightweight equipment is a priority in this case.

Technical specification

Objective
30x35xMagnification
65 mm85 mm95 mm110 mmEffective objective lens diameter
2.2 mm2.9 mm2.7 mm3.1 mmExit pupil diameter
21 mmEye relief
38 m/1000m37 m/1000m32 m/1000mField of view at m/1,000 m / ft/1,000 yds
2.1 °1.8 °Field of view degrees
Digital
M 67 x 0.75M 87 x 0.75M 97 x 0.75M 118 x 0.75Objective filter thread
Size & weight
371 mm404 mm458 mm472 mmLength in mm.
2195 g2520 g2760 g3520 gWeight
Environment & Conditions
-25 to +55 °CFunctional temperature
-30 to +70 °CStorage temperature
13 ft (4m) water depth (inert gas filling)Submersion tightness

Downloads

Instruction manual BTX BANr.: 702-26Instruction manual BTX BANr.: 702-26
PDF 15.3 MBArtboard
Technical data BTX BAN.: 702-27Technical data BTX BAN.: 702-27
PDF 0.5 MBArtboard
WarrantySwarovski Optik Warranty
PDF 0.1 MBArtboard