Tele Vue Optics
Tele Vue 10.0 Ethos (ETH-10.0) $855.00
The 10mm is parfocal with the 13mm ETHOS.Its 59mm rubber grip diameter makes this model usable in binocular viewers — for most people. Description TeleVue is known for its in-house eyepiece and telescope designs by Al Nagler; our latest eyepieces brings new meaning to the term "in-house." The concept for this eyepiece series was proposed by TeleVue President David Nagler, with performance parameters giving it the fundamental characteristics (the ethos) of a TeleVue eyepiece: high contrast, comfortable eye relief and full field sharpness. Control of astigmatism, field curvature, lateral color, angular magnification distortion correction, and low pupil sensitivity for daytime...
Tele Vue Optics
Tele Vue 13.0 Ethos (ETH-13.0) $855.00
We have not specifically endorsed the 13mm Ethos for Bino-Vue use because of the large diameter barrel. Even so, we were advised by Mike Harvey at the Winter Star Party (February 2008) that only 1-person in 25 had interpupilary limits with the bino'd Ethos (63.5-mm for the initial production 13mm).However, since many of our customers have been thrilled with the experience, we have maximized the potential use by narrowing the barrel from 63.5-mm to 62-mm diameter for eyepieces delivered beginning mid-March 2008. While the difference is only 1.5-mm, (or 0.75-mm for pairing a first production unit with current production) we...
Tele Vue Optics
Tele Vue 17.0 Ethos (ETH-17.0) $1,034.00
The 17mm ETHOS is an ideal complement to the 31mm Nagler Type-5. They are parfocal (both have focus locations about 3/8" above shoulder) and the 31mm Nagler Type-5 has exactly twice the true field area. Description TeleVue is known for its in-house eyepiece and telescope designs by Al Nagler; our latest eyepieces brings new meaning to the term "in-house." The concept for this eyepiece series was proposed by TeleVue President David Nagler, with performance parameters giving it the fundamental characteristics (the ethos) of a TeleVue eyepiece: high contrast, comfortable eye relief and full field sharpness. Control of astigmatism, field curvature,...
Tele Vue Optics
Tele Vue 21.0 Ethos (ETH-21.0) $1,162.00
The 21mm focal length completes the logical set of 21mm/13mm/8mm and nicely juxtaposes the 17mm/10mm/6mm combination. Each step within these two sets approaches a 3x field area gain. The 21mm's effective field stop diameter is 36.2mm, bringing its true field close to the 35mm Panoptic (38.7mm Field Stop diameter). Its true field is also larger than the 26mm Nagler with its 35mm effective field stop diameter. In an f/4 Dobsonian, the exit pupil is just 5.25mm using the 21mm Ethos instead of 8.75mm with a 35mm Panoptic, or 6.5mm with a 26mm Nagler. Description TeleVue is known for its in-house...
Tele Vue Optics
Tele Vue 3.7 Ethos-SX (ETH-03.7) $855.00
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 3.7mm actually has more TFOV than our 8mm Plössl, 6mm Radian, and 5mm Nagler Type-6!In 1¼" mode, it is parfocal with the wide range of 1¼" TeleVue Plössls, Panoptics, Radians, Naglers, Nagler Zooms, and 6mm and 8mm Ethos eyepieces. The screw-on 2" adapter (included) is designed to make it parfocal with 13mm and 10mm Ethos when they are used in their 2" modes. Description TeleVue is known for...
Tele Vue Optics
Tele Vue 4.7 Ethos-SX (ETH-04.7) $855.00
Al Nagler eagerly pushed Ethos designer Paul Dellechiaie to extend the new 3.7mm focal length 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,...
Tele Vue Optics
Tele Vue 6.0 Ethos (ETH-06.0) $803.00
In 1¼" mode, if you use TeleVue's "high-hat" 2"-1¼" adapter, it will be parfocal with TeleVue's Plössls, Radians, Type 6 Naglers, Nagler Zooms, 1¼" Panoptics and 8mm ETHOS. Description TeleVue is known for its in-house eyepiece and telescope designs by Al Nagler; our latest eyepieces brings new meaning to the term "in-house." The concept for this eyepiece series was proposed by TeleVue President David Nagler, with performance parameters giving it the fundamental characteristics (the ethos) of a TeleVue eyepiece: high contrast, comfortable eye relief and full field sharpness. Control of astigmatism, field curvature, lateral color, angular magnification distortion correction, and...
Tele Vue Optics
Tele Vue 8.0 Ethos (ETH-08.0) $803.00
In 1¼" mode, if you use TeleVue's "high-hat" 2"-1¼" adapter, it will be parfocal with TeleVue's Plössls, Radians, Type 6 Naglers, Nagler Zooms, 1¼" Panoptics and 6mm ETHOS. Further, its light weight and small diameter makes the 8mm suitable for anyone using a binocular viewer. Another application is for spotting scope set-ups with the TeleVue 60° 1¼" diagonal. Description TeleVue is known for its in-house eyepiece and telescope designs by Al Nagler; our latest eyepieces brings new meaning to the term "in-house." The concept for this eyepiece series was proposed by TeleVue President David Nagler, with performance parameters giving it...

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