More about the series TSN 660...
- The lens has more than 120% the light gathering capability of a 60mm objective lens.
- All lenses, prisms, and dustproof glass are fully multicoated, ensuring sharp images and a clear visual range.
- The housing is waterproof to JIS protection class 7 and filled with dry nitrogen gas to prevent the lens from fogging.
JIS 7 = Japanese Industrial Standard / class 7 = Protected against the effects of temporary immersion in water.
Attention: Eyepieces not included in shipment.