3.7mm Ethos – SX Not content to rest on their laurels, Tele Vue once again widened the field with the introduction of it’s 3.7mm Ethos SX . It’s 110 degree field matches the AFOV of the LEM simulator that Tele Vue founder Al Nagler worked on for NASA in years past.
Tele Vue 3.7mm Ethos – SX (Simulator eXperience) Worlds 1st Astronomical Eyepiece with 110° Apparent Field . With 110°, the Ethos – SX has 21% more AFOV area than the 100° Ethos design. This permits a nice 62% power increase from a 6mm Ethos , while retaining 68% of its TFOV.
The 3.7 mm Ethos – SX Eyepiece (the Simulator eXperience) is part of the Tele Vue Ethos Eyepiece Series.. Al Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend the new 3.7 mm focal length to reach 110 degrees, the same field as the LEM Simulator optics Al designed over 50-years ago (in the 1960s) to train NASA astronauts for lunar landings.
7/17/2015 · The Ethos – SX ’s 110° apparent field is the same the same field as the optics he designed 40 years ago for the lunar module simulator used to train NASA astronauts for the lunar landings. To put the eyepiece through its paces, we used it in a Tele Vue NP-101, a 4-inch apo refractor, and an 8-inch f/4.5 Newtonian for observations of bright …
The 3.7mm Ethos SX has more true field of view than the Tele Vue 8mm Plossl, the 6mm Radian, or the 5mm Nagler Type 6. When used in 1.25-inch mode, the 3.7mm is parfocal with a wide array of Tele Vue 1.25 inch eyepieces, including the 6mm and 8mm Ethos , as well as Panoptics, Radians, Naglers, Nagler Zooms, and Plossls.
Tele Vue 3.7mm Ethos-SX Eyepiece, Tele Vue 3.7mm Ethos-SX Eyepiece, Tele Vue 3.7mm Ethos-SX Eyepiece, TeleVue 4.7 mm Ethos SX Eyepiece Features. The 4.7 mm is a 1.25-inch format and is parfocal with the wide range of 1.25-inch Tele Vue eyepieces. 2-inch adapter included. Weight: 1.15 lb / 1.3 lb with 2-inch adapter/stand; Eye relief: 15 mm (accepts DIOPTRX eyesight astigmatism corrector) Effective field stop diameter: 8.94 mm; Focal length: 4.7 mm, 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.
TeleVue .com: Eyepieces > Ethos > Comments: Owner’s Comments. 21.0 Ethos . You’ve got very innovative engineers always managing to break the laws of optics. This Ethos is out of this world! … 4.7 Ethos – SX . Absolutely outstanding performance! Use the Ethos 4.7 for planetary mainly. It’s awesome, like being INSIDE the eyepiece – the eyepiece …
5/6/2009 · Page 2 of 2 – Televue 4.7mm Ethos SX Reviews – posted in Eyepieces: I really love the Ethos line (especially the 13 and 21), but find myself annoyed by the SX series. The benefits provided by the 110 degree field of view are negligible in my opinion as it takes nearly superhuman facial geometry to appreciate that extra 10 degrees. But to provide that extra 10 degrees, Televue made this …
6/6/2009 · Page 1 of 2 – Televue 4.7mm Ethos SX Reviews – posted in Eyepieces: Are there any reviews out there for the 4.7mm Ethos SX ? I have tried to find some but no luck. I want to know because I am seriously contemplating on purchasing one. I have another post 5mm Dilemma in which I seek advice for a 5mm eyepiece and the 4.7mm Ethos is among those in the group.
