KOWA TSN-55S PROMINAR
+ 17–40×55

KOWA TSN-55S PROMINAR — Straight spotting scope 17–40×55

Short description
Compact straight-view spotting scope featuring a 55 mm fluorite objective and 17–40× wide-angle zoom. A portable choice for observing birds, wildlife and distant landscapes.

Long description
The Kowa TSN-55S PROMINAR provides a direct viewing line along the scope, making alignment with a subject intuitive. Its fluorite crystal objective minimises colour fringing and supports detailed, high-contrast views. The 17–40× zoom adjusts magnification to the scene, while coarse and fine focusing allow accurate image adjustment. A waterproof, nitrogen-filled body supports outdoor use. At 275 mm long and 960 g including the eyepiece, this spotting scope fits comfortably into a travelling observer’s kit.

Uses
Birdwatching, wildlife and landscape observation, travel and viewing from a hide. Straight viewing suits users who prefer looking directly towards their subject. Digiscoping with an optional compatible adapter.

Specifications — both models

• Objective: 55 mm fluorite crystal.

• Magnification: 17–40× wide-angle zoom.

• Actual field of view: 3.64–2.0°; field at 1,000 m: 64–35 m.

• Close focus: 2.8 m.

• Eye relief: 17 mm.

• Exit pupil: 3.2–1.4 mm.

• Coarse and fine focusing.

• Waterproof, nitrogen-filled body; KR protective objective coating.

• Retractable sunshade; 58 mm filter thread.

• TSN-55A: angled viewing; 255 mm; 965 g including eyepiece.

• TSN-55S: straight viewing; 275 mm; 960 g including eyepiece.

Box contents — according to the selected model

• TSN-55A or TSN-55S PROMINAR with integrated 17–40× zoom eyepiece.

• Objective lens cap.

• Eyepiece cap.

• Cleaning cloth.

• Instruction manual.

Tripod, protective case and digiscoping adapter sold separately.