Kowa TSN-663M 66mm Prominar XD Spotting Scope (Angled Viewing, Green)

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product overview
product overview
  • Angled Viewing

  • Eyepiece Required for Use

  • 66mm Objective Lens

  • Extra-Low Dispersion Prominar XD Lens

  • Anti-Reflection Multicoating

  • Nitrogen-Filled, Water and Fogproof

  • Magnesium-Alloy Body

  • Rotatable Tripod Collar

  • 1/4 inch-20 Tripod Threading

  • Coarse and Fine Focus Adjustments


The green, angled viewing TSN-663M 66mm Prominar XD Spotting Scope from Kowa features high-quality optics built into a body that is designed for reliable use under a variety of viewing conditions. Measuring 12.2 inch long and constructed from magnesium alloy, this durable scope can provide a wide angle or a versatile viewing range depending on which separately available eyepiece is installed on it.

Compatible Kowa eyepieces include the TE-14WD 30x Wide Angle Eyepiece, the TE-17HD 25x Long Eye Relief Eyepiece, and the TE-9Z 20-60x Zoom Eyepiece.

While in use, the TSN-663M 66mm Spotting Scope's Prominar XD (eXtra-low dispersion) Lens and a concave dispersion lens work together to minimize chromatic aberrations. Additionally, multicoated optical surfaces help to consistently maximize light transmission, sharpness, and color fidelity.

A nitrogen fill prevents fog accumulation and an O-ring sealed waterproof construction further add to the rugged design of the TSN-663M 66mm Spotting Scope. Conforming to JIS (Japanese Industrial Standard) Protection Class 7 waterproofing, this scope can withstand momentary immersion, assuming the eyepiece mount is not open and exposed.


Optical Performance
  • 66mm objective lens
  • Prominar XD lens and a dispersion concave lens help to minimize chromatic aberrations
  • Multicoated optical surfaces minimize reflections while helping to maximize light transmission, sharpness, and color fidelity
Use and Handling
  • Smooth and coarse-focus knob
  • Integrated sunshade
  • Rotatable tripod collar with 1/4 inch-20 threading
Construction Details
  • Magnesium-alloy body
  • Nitrogen-filled to be fogproof
  • O-ring sealed to be waterproof
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Objective lens diameter66 mm
Minimum Focus Distance19.7 ft (6.0 m)
Mounting Threads1/4 inch-20
Filter Thread72 mm
WeatherproofingWaterproof, O-ring sealed
Dimensions31.10 cm
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What’s In The Box
Kowa TSN-663M 66mm Prominar XD Spotting Scope (Angled Viewing, Green)
  • Front Lens Cap

  • Rear Eyepiece Mount Cap

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