Tele Vue 13mm Ethos Eyepiece

ITEM #
TE-ETH-13.0

The Tele Vue 13 mm Ethos Eyepiece for both 1.25-inch and 2-inch barrels is part of the Ethos Series delivering a 100 degree field-of-view.

 

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Tele Vue 13mm Ethos Eyepiece

The Tele Vue 13 mm Ethos Eyepiece for both 1.25-inch and 2-inch barrels is part of the Ethos Series delivering a 100 degree field-of-view. 

At the 2007 Northeast Astronomy Forum in New York, Tele Vue introduced attendees to a new observing experience with personal views through the new Ethos. With a 13 mm focal length evoking the original 'Nagler' revolution, the field area of this new eyepiece is, at 100 degree, more than 50% larger than an 82 degree field. The Tele Vue 13 mm Ethos eyepiece is essentially multiple eyepieces, delivering the true field size of a longer focal length, narrower apparent field eyepiece with the benefits of higher power and darker sky background.

Tele Vue Optics is known for its in-house eyepiece and telescope designs by Al Nagler. Tele Vue's latest eyepiece brings new meaning to the term 'in-house.' The concept for the 13 mm Ethos 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 protege 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.

The Tele Vue 13 mm Ethos eyepiece has now been shown at NEAF, TSP, RTMC, as well as other major astronomy events. The Tele Vue Ethos has been extremely well received by the astronomy community and will be one of the most highly anticipated products to be released in years.

Since it is designed as an 1.25-inch eyepiece, there is NO optical benefit by using a 2-inch holder, however, there is a 2-inch barrel is included just for convenience. The holder is also threaded to accept our Tele Vue's 2-inch extension tube, which allows the use of 48 mm filters.

 

OPT Product Number: TE-ETH-13.0

 

All Tele Vue products are available to ship world-wide from OPT, and effective July 1, 2008, are covered by a Five Year Worldwide Limited Product Warranty! Always be sure to save your original packaging materials should you need to return any Tele Vue product for warranty or repair.

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SPECIFICATIONS

Dust Caps IncludedYes
ER15mm to 19mm
Eye Guard IncludedYes
Eye Relief15mm
Eyepiece OpticsEthos
Field of View100 degrees
Field Stop22.3mm
Focal Length13mm
FoV100 Degrees or More
Free ShippingYes
ManufacturerTele Vue
ModelTele Vue Ethos
Size1.25"
Size2"
WarrantyLifetime Warranty
Customer Reviews
5.0 Based on 7 Reviews
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Filter Reviews:
PS
04/16/2020
Patrick s.
United States United States
Ethos 13 mm eyepiece

My overall experience was excellent as OPT gave great service and the Ethos gives beautiful views.

D
10/21/2013
Darko
Wonderful eyepiece!

I got this eyepiece as a gift. I almost could not believe. This eyepiece is great. To own it means many nights of deep observing pleasure. I could recommend it to all who could afford it.

A
02/13/2012
anonymous
Wonderful

The best eyepiece I've every used. The 1.25 mount with optional 2 adapter means I can use it on any scope, from my personal 150mm refractor to the 14 at the local astronomy club. Great clarity and brightness.

S
04/24/2009
Sergio
Customer review

What can I say that has not been said? One heck of an eyepiece. I took this baby down to the Everglades the other night and I felt like jumping into the eyepiece. The sky was so black, the stars so sharp, the FOV, endless. M42 was breathtaking, my best view ever!!! Cant wait to get another one to attempt binoviewing with them.

K
04/09/2008
Kaustubh
Redefining the ethos of an eyepiece......

1. Always center an object for the best view. 2. The field edge is only good for framing the object. 3. Eyepieces >70 deg FoV are mega-ultra-hyper-uber wide angle. Accept that compromise in edge quality. How times change!

D
12/05/2007
Dave
Worth every penny..

Scary , this eyepiece brings you there ! Falling in truly does describe the view with this eyepiece. The satisfaction received when viewing through binoculars is duplicated with only one eye with this one , I cant wait to get two of these side by side in a bino configuration ! I do not want to look into the milkyway , I want to STAND IN IT ...and with this eyepiece , YOU DO! Very comfortable and easy to use and after about 15 minutes with it , it is not there and you are in outer space :- , you and scope become one. I have absolutely nothing negative to say about this wonderful eyepiece and 13mm is a nice starting point .