Tele Vue Eyepieces

Ethos™: The "Majesty Factor" - 100° & 110° Apparent Field Eyepieces

TeleVue continues to expand its Ethos eyepiece line with introduction of the 10mm and 21mm oculars. Debuting in Spring 2009, the 10mm Ethos eyepiece bridges the gap between the previously released 8mm and 13mm eyepieces. At the other end of the size range, the 21mm Ethos has been planned for delivery starting in mid-December. The Ethos ocular series has met with rave reviews since the release of the 13mm eyepiece at NEAF 2007. With its full 100 degree field of view, high contrast and full-field sharpness, this ocular essentially operates as multiple eyepieces in one. It provides the true field size of an eyepiece with longer focal length and narrower apparent field with the benefits of higher magnifications and darker sky background. As well as matching all the key performance criteria of the 13mm sibling, the new 8mm version is also parfocal in 1¼" focusers with Radians, Plössls, Type 6 Naglers and 1¼" Panoptics. Further, its lighter weight and smaller diameter than the 13mm Ethos makes the 8mm suitable for anyone using a binocular viewer. In comparing it to the 8-24mm Zoom eyepiece, the 8mm Ethos has the power of the 8mm Zoom and 83% of the field of the 24mm setting!

Read what the folks at Tele Vue had to say about this ocular series: "The concept for this eyepiece was first proposed by Tele Vue President David Nagler, with performance parameters giving it the fundamental characteristics (the ethos) of a Tele Vue eyepiece: high contrast, comfortable eye relief and full field sharpness. Control of astigmatism, field curvature, lateral color, angular magnification distortion correction (technical reference), and low pupil sensitivity for daytime use were specified criteria. Following Tele Vue’s philosophy of pushing the state of the art, long-time Tele Vue employee and optical design protégé Paul Dellechiaie took up the challenge and designed the basic eyepiece form. Under Al’s guidance, Paul tweaked his design to fulfill the original goals. While sharpness is inherent to the optical design, contrast is maximized through the intelligent use of flat finished baffles and ultra low reflectance, high efficiency coatings tuned to the composition of each element." We think you'll like what you see.

Type	Part #	Focal length (mm)	Barrel Size (in.)	# Elements/ #groups	Apparent field- of-view (deg.)	Parfocal Group	Eye-Relief (mm)	Weight (lb/oz)
Ethos	ETH210	21	2"		100		15	2.25/36.0
Ethos	ETH170	17	2"		100		15	1.55/24.8
Ethos	ETH130	13	2" & 1.25"		100		15	1.20/19.2
Ethos	ETH100	10	2" & 1.25"		100		15	1.10/17.6
Ethos	ETH080	8	2" & 1.25"		100		15	.98/15.7
Ethos	ETH060	6	2" & 1.25"		100		15	.97/15.5
Ethos SX	ETH047	4.7	2" & 1.25"		110		15	1.30/20.8
Ethos SX	ETH037	3.7	2" & 1.25"		110		15	1.10/17.6

Remember: Our prices INCLUDE insured standard ground shipping to U.S. customers in the 48 contiguous states!


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Delos™: 20 mm of Eye Relief - 72° Apparent Field Eyepieces

Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20mm eye-relief, 72° apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application. The Delos was conceived as a narrower field Ethos. Reducing the field to 72° allowed freedom to increase eye-relief, while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect f θ (theta) distortion mapping, and color neutrality. Image fidelity is maximized utilizing glass matched multicoatings and anti-reflection surfaces throughout the eyepiece.

Contrast is further enhanced with a new, continuously adjustable height eyeguard system that can be locked in any position. Since the Delos eye-lens measures a quite large 35mm in diameter, preventing stray light from reflecting off the first surface and extraneous light from entering your eye pays off in a nice increase in perceived contrast. The eyeguard's sliding action allows for positioning the soft rubber eyeguard at the ideal height to suit the observer's preference. Indicator marks on the eyepiece body are handy reference guides for setting your perfect position.

Remember: Our prices INCLUDE insured standard ground shipping to U.S. customers in the 48 contiguous states!

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Nagler™ - 82° Apparent Field Eyepieces

	Type 4 With the goal of achieving a wide angle perspective similar to that of the naked eye while not compromising the high degree of contrast and sharpness, Al Nagler set about designing the eyepieces that would bear his name. Type 4 Naglers achieved these objectives, as well as incorporating longer eye-relief. This group of eyepieces also makes use of the "Instajust" eyeguard seen on the Radians. Available in focal lengths of 22mm, 17mm, and 12mm.
	Type 5 The Type 5 Nagler eyepieces have a unique, 6-element design that maintains the contrast advancements of the Type 4 while also providing a very wide field of view. Several different extra-low dispersion glasses and specialized coatings are used for the remarkable contrast and longer eye relief than earlier Nagler designs. The new material allows these oculars to be much lighter than their predecessors, the Nagler Type 2s. The 31mm, 26mm, and 20mm eyepieces have a 2-inch barrel size, while the 16mm is a handy 1.25 inches.
	Type 6 Increased eye relief, contrast, and true field-of-view were worked into these shorter focal length eyepieces. This version utilizes a new, 7-element design of different exotic material and coating processes and still achieves the same sharpness as the originals. All the eyepieces in this collection offer 12mm of eye relief. Available in focal lengths of 13mm, 11mm, 9mm, 7mm, 5mm, 3.5mm and 2.5mm.

Remember: Our prices INCLUDE insured standard ground shipping to U.S. customers in the 48 contiguous states!


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Panoptic - 68° Apparent Field Eyepieces

As the Radian design started with wide-field design concepts, the Panoptic eyepiece group also used those principles as a base but sought to bring the famous Nagler-like, high-contrast performance to an ocular with a larger field-of-view. Each Panoptic boast 68 degrees apparent field-of-view with tack-sharp images. Comfortable eye relief reaches approximately 70% of focal length. Additional features include an undercut in the barrel for extra locking security and a cover for the eyeguard. Available in 41mm, 35mm, 27mm, 24mm and 19mm.

Remember: Our prices INCLUDE insured standard ground shipping to U.S. customers in the 48 contiguous states!


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Plössl - 50° Apparent Field Eyepieces

Introduced in 1980, the Plössl series of eyepieces have long been considered the benchmark of performance and value for oculars in the 50 degree field-of-view range. Although they are at the lower end of the price spectrum, they receive the same care and attention as the more expensive Tele Vue oculars. By utilizing high-index glasses to reduce astigmatism and lateral color at the field's edge, these eyepieces deliver sharp image and great contrast. Available in 55mm, 40mm, 32mm, 25mm, 15mm, 11mm, and 8mm.

Remember: Our prices INCLUDE insured standard ground shipping to U.S. customers in the 48 contiguous states!


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Eyepiece Carrying Bag (ECB0010)

Carry your eyepieces in style with this carrying bag! This soft-sided case has rigid foam inside with cutouts to hold up to 13 eyepieces of all sizes. Some cut outs are larger, enabling you to carry a variety of other accessories as well. The dense foam protects eyepieces from shock and maintains the case's rigidity. It will not flex even when loaded. The bag is made from an attractive gray material. Exterior dimensions are 21" x 9" x 6". Included are the carry handle and adjustable shoulder strap.

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This page was last modified: November 7, 2017

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