SKU: 14977597816

Tele Vue Ethos 17mm Ultra Wide Angle Eyepiece (2")

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Description

Tele Vue Ethos 17mm Ultra Wide Angle Eyepiece (2")100 Apparent Field of View 15mm Eye Relief The 17mm Ethos Eyepiece is part of Tele Vue 's Ethos collection, the first astronomical eyepieces with 100 apparent fields of view. A 100 apparent field of view is a truly astounding number by any astronomical standard. Given that your 'mind's eye' can concentrate upon approximately 50 of a viewing field at once, doubling that amount results in a view that you could feel like you're "just falling into". For

  • 100° Apparent Field of View
  • 15mm Eye Relief

The 17mm Ethos Eyepiece is part of Tele Vue 's Ethos collection, the first astronomical eyepieces with 100° apparent fields of view.  

A 100° apparent field of view is a truly astounding number by any astronomical standard.  Given that your 'mind's eye' can concentrate upon approximately 50° of a viewing field at once, doubling that amount results in a view that you could feel like you're "just falling into".  For any given magnification, an Ethos will show a whopping 50% more sky than the previous widest oculars.  Sharpness is inherent to the Ethos' optical design, and contrast is maximized through intelligent use of flat baffle finishes and ultra low reflectivity, high-efficiency coatings tuned to the composition of each element.

The Ethos does the job of many eyepieces, delivering the true field sizes of longer focal length, narrower apparent field eyepieces with the benefits of higher power and darker sky backgrounds.

The 17mm Ethos fits 2" focusers/diagonals.  Though it has a respectable 15mm of eye relief, it accepts Tele Vue's DIOPTRIX eyepiece astigmatism correctors so that even astigmatic viewers can observe without having to use their glasses.

Accepts DIOPTRIX astigmatism correcting lenses so astigmatic users can enjoy sharp viewing without their glasses
Can be combined with Barlows and Powermates for higher magnifications without vignetting
Accepts 48mm filters
Focal Length 17mm
Eye Relief 15mm
Apparent Field of View 100°
Dimensions Not Specified by Manufacturer
Weight 1.55 lbs ( 704g )
Packaging Info
Package Weight 2.25 lb
Box Dimensions (LxWxH) 8.3 x 4.3 x 4.3"
In the Box
Tele Vue Ethos 17mm Ultra Wide Angle Eyepiece (2")
  • Front & Rear Lenscaps
  • 5-Year Warranty
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
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Exchange/Return Notes
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SKU: 14977597816

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Amazon Customer
New York, US
★★★★★ 2
Readable
Format: Hardcover, Format: Hardcover
Not at all what I would consider “Very Good” condition, as the book was described. Pretty disappointed to be honest, considering I paid over $100 for this. It’s beaten up, torn, and dirty, but it’s readable.
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Reviewed in the United States on September 18, 2021
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Taylor
San Leandro, US
★★★★★ 1
Not as listed!
Format: Hardcover
I paid nearly 300 dollars for this book and it was not as listed. I bought this because it was listed as new, but the book arrived with a broken binding, highlighting and writing throughout the pages, and the course ecode was already used. Unfortunately, I cannot use it for my studies.
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Reviewed in the United States on January 13, 2022
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HA
Louisville, US
★★★★★ 5
Coverage lined up nearly perfectly with my fed courts class
Format: Paperback
Almost every case we covered in class and definitely every concept is covered, and explained helpfully, in this E&E. The problems are helpful, too.
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Reviewed in the United States on April 15, 2021
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Michaela Coder
Battle Creek, US
★★★★★ 5
Great Federal Courts supplement
Format: Paperback
This E&E book really helped with Fed. Courts! Incorporate the public v. private law models/SOP and federalist v. nationalist paradigms which my professor used in the course. This version doesn't have some of the newer cases (TransUnion v. Ramirez). The standing section could have more info but standing is one of the easiest doctrines in fed courts. The Habeas Corpus, particularly the Teague Doctrine and AEDPA, section is excellent. The only big thing this book does not include are universal injunctions and the scope of remedies (outside of standing, anti-injunction act, and section 1983).
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Reviewed in the United States on June 5, 2025
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Dawn M Black
Lake Worth, US
★★★★★ 5
The perfect Christmas golden book!
Format: Hardcover, Format: Hardcover
An absolutely precious Little Golden Book. The illustrations are wonderful and really bring the story to life. If you’re a lover of all things Christmas you should add this to your library. Your littles and adults alike will love it!
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Reviewed in the United States on June 2, 2026

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