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Features
Description
Al Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend the 3.7mm focal length to reach 110°, the same field size as the LEM Simulator optics Al designed years ago to train NASA astronauts for lunar landings. The 4.7mm Ethos-SX, like its 3.7mm progenitor, is designed and crafted to combine its exceedingly wide field of view with all the contrast, color-rendition, distortion correction and center-to-edge sharpness needed to achieve that natural view. Compared to a lower power eyepiece with the equivalent TFOV (similar field stop)such as an 11mm Pl"ssl (9.1mm field stop), the greater power - for higher resolution, and smaller exit pupil (for a darker background to enhance contrast) reveals a deep sky experience "even better than you imagined". The 4.7mm is a 1¼" format and is parfocal with the wide range of 1¼" Tele Vue eyepieces. A2" adapter is included.
Brand: Tele Vue
Eye Piece Lens Description: Nagler
Finderscope: Reflex
Item Weight: 2 Pounds
Focal Length Description: 15 millimeters
Product Dimensions: 8.3 x 4.4 x 4.3 inches
Item Weight: 2 pounds
Item model number: Ethos
Is Discontinued By Manufacturer: No
Date First Available: October 1, 2012
Manufacturer: Tele Vue
