Terrestrial Telescope Kowa TSN-773 XD 9000100

* Under this reference only the body without eyepiece is supplied.

The PROMINAR TSN-773 and TSN-774 models integrate an objective lens with low dispersion properties to reduce chromatic aberration and improve image sharpness by taking advantage of the light dispersion reduction factor offered by low dispersion lenses.

The performance and compact structure of these spotting scopes make them superior compared to other instruments in their class.
The body is waterproof to JIS class 7 protection standards and is filled with dry nitrogen to prevent the lenses from fogging.

* JIS 7 = Japanese Industrial Standard / Class 7 = Protection against the effect of temporary immersion in water.

The XD lens used in PROMINAR TSN-773/774 models has similar characteristics to fluorite glass and also significantly reduces chromatic aberration. All lenses are environmentally friendly (Eco-Glass is an environmentally friendly glass that does not contain lead or other harmful substances)

XD lens

This lens has exceptional performance, and is almost comparable to fluorite. When an extra-low dispersion XD lens is combined with a concave lens with specific dispersion properties, chromatic aberration is virtually eliminated.
- Prominar extra-low dispersion "XD" glass objective lens eliminates chromatic aberration.
- Wide exit pupil provides bright images.
- The advanced lens system of the TSN-770 series has made it possible to develop a compact instrument free of chromatic aberration without compromising brightness.
- All glass used is environmentally friendly.
- New treatments applied to the optics increase the light transmission ratio, providing brighter and sharper images.
- New focusing mechanism that integrates a smaller prism mount, which eliminates image movement when focusing.
- Photo tripod mount with two threads, 1/4" and 3/8".
- Symmetrical body structure and centered focus knob for easy use with both hands.
- Aluminum and magnesium alloy construction reduces the weight of the instrument, making it one of the lightest spotting scopes on the market.
- A dual focusing mechanism allows focusing from 5m to infinity with just two turns of the quick knob, as well as fine-tuning with the micrometer knob.
- The focusing mechanism provides uniform and stable focusing.
- Natural green body color.
- Rigorously tested to ensure long, durable life.
- Eyepiece locking mechanism prevents eyepiece loss or dropping.
- Waterproof, nitrogen-filled body prevents lens fogging.

Technical Specifications TSN-773:

- 45° inclined view
- Diameter: 77mm (XD glass objective lens)
- Weight: 1330 grams (without eyepiece)
- Length: 318mm
- Minimum focusing distance: 5m
- Waterproof, nitrogen-filled body
- 82mm diameter filter thread