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 6 of 48 
Orion Telescopes

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13mm Tele Vue Ethos Telescope Eyepiece
Free Standard Shipping
Was  
$650.00
Now  
$599.99
You Save  
$50.01
 
Accepted Payment
Expected Ship Date: 04/27/2014

  • Unprecedented 100° apparent field of view telescope eyepiece takes the spacewalk experience to the next level
  • Field of view is 50% larger than 82° Tele Vue Nagler eyepieces
  • High power and enormous field of view serves up a large image with darker sky background
  • Incredibly sharp across the entire 100° eyepiece apparent field of view
  • Light weight at only 1.3 lbs


Learn more
Item #  08347
Mfg Model #  ETH-13.0

 

Sky & Tel Hot Product 2009Tele Vue is known for its in-house eyepiece and telescope designs by Al Nagler; their latest telescope eyepiece brings new meaning to the term "in-house". 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, 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 telescope 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. At the 2007 Northeast Astronomy Forum, Tele Vue once again broadened the amateur astronomer’s perspective on the universe and introduced a new observing experience; 100-degree of pure Tele Vue quality. With a 13mm focal length evoking the original "Nagler" revolution, the field area of this new eyepiece is more than 50% larger than an 82-degree field. The Tele Vue Ethos is essentially multiple eyepieces, delivering the true field size of a longer focal length, narrower apparent field telescope eyepiece with the benefits of higher power and darker sky background.

Warranty

This product is serviced and supported by its manufacturer according to the terms and conditions included in the packaged product. Orion's limited warranty does not apply. Please contact the manufacturer directly for technical support.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

  • Design
    Proprietary
  • Eyepiece focal length
    13.0mm
  • Barrel size
    1.25" & 2"
  • Apparent field of view
    100.0°
  • Eye relief
    15.0mm
  • Coatings
    Fully multi-coated
  • Filter threads
    Yes
  • Parfocal
    Yes
  • Field stop diameter
    22.3mm
  • Barrel security recess
    Yes
  • Blackened lens edges
    Yes
  • Rubber eyeguards
    Yes
  • Body material
    Aluminum
  • Case
    No
  • Weight (oz.)
    1
  • Dimensions
    5.6 in. x 2.5 in.
  • Warranty
    Limited lifetime

Orders received by noon Pacific Time for in-stock items ship the same business day. Orders received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

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