Televue 4.7mm Ethos SX Eyepiece- 1.25"/2"

Televue 4.7mm Ethos SX Eyepiece- 1.25"/2"

Televue 4.7mm Ethos SX Eyepiece- 1.25"/2"
Al Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend an Ethos model (3.7mm) to reach 110°, the same field size as the LEM Simulator optics Al designed 45-years ago to train NASA astronauts for lunar landings.

The new 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 Plössl (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. 2" adapter included.
Telescope Mag. TFOV Exit pupil
TV-60is 76.6x 1.42° 0.78 mm
TV-76 102.1x 1.07° 0.74 mm
NP-101is 114.9x 0.95° 0.88 mm
TV-85 127.7x 0.85° 0.67 mm
NP-127is 140.4x 0.78° 0.90 mm
TV-102iis 187.2x 0.58° 0.54 mm

Performance Summary with Tele Vue Scopes

Model: 4.7mm Ethos-SX 110° (Simulator eXperience)
Apparent field: 110°
Focal length: 4.7mm
Effective field stop diameter: 8.94mm
Eye relief: 15mm (accepts DIOPTRX eyesight
astigmatism corrector)
Weight: 1.15 lbs / 1.3 lbs with 2" adapter/stand

SKU ETH-04.7
Our price: $579.00 (503.73)

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