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TeleVue ETHOS Telescope Eyepieces

Item# TVU098
 
5.0

(56 Ratings)

Customer Q & A
1. Focal Length Size:
6mm
8mm
13mm
10mm
17mm
21mm

Sale Price:

$559.98 to $799.98

List Price: $740.00 to $1075.00
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Details & Dimensions
Guarantee & Returns
  • 100 Degree apparent field of view
  • Edge to edge viewing is simply amazing
  • The field area is more than 50% larger than an 82 degree!
  • This award winning eyepiece has won more awards than any other eyepiece
  • Gives you that "space walk" feeling when viewing

Description

Tele Vue is known for its in-house eyepiece and telescope designs by Al Nagler; our latest 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 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.

 

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; 100º 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 82º field. The Tele Vue Ethos 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.

 

  • 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.

 

 

  • 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.

 

  • 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 decided to make this small change public, in case you want to give it a try.


 

  • The 10mm is parfocal with the 13mm ETHOS. Its 59mm rubber grip diameter makes this model usable in binocular viewers — for most people.

 

  • The 8mm in 1¼" mode, if you use Tele Vue's "high-hat" 2"-1¼" adapter, it will be parfocal with Tele Vue'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 Tele Vue 60° 1¼" diagonal.

 

  • The 6mm in 1¼" mode, if you use Tele Vue's "high-hat" 2"-1¼" adapter, it will be parfocal with Tele Vue's Plössls, Radians, Type 6 Naglers, Nagler Zooms, 1¼" Panoptics and 8mm ETHOS.

 

CHOKING HAZARD - small parts may pose a risk to children under 6 yrs.

Shipping Restrictions:
Only ships in contiguous USA.

Dimensions & Specifications

Brand

TeleVue

Telescope Eyepiece Series

Ethos Eyepieces

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Focal Length Size:

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The Perfect Accessories

Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
TeleVue ETHOS Telescope Eyepieces
 
4.9

(based on 56 reviews)

Ratings Distribution

  • 5 Stars

     

    (52)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

98%

of respondents would recommend this to a friend.

Pros

  • Great optics (48)
  • Strong construction (38)
  • Easy to use (29)
  • Widely compatible adapter (16)
  • Good padding (6)

Cons

  • Heavy (15)
  • Heavy / bulky (8)

Best Uses

  • Astronomy (51)
  • Terrestrial viewing (4)
  • Astrophotography (3)
    • Reviewer Profile:
    • Casual/ recreational (33), Avid adventurer (20)
    • Was this a gift?:
    • No (27)

Most Liked Positive Review

 

Out of this World..

This thing will knock your socks off !! Its about time a company like TeleVue has designed an eyepiece that makes it seem your looking though the whole lens of your telescope- Good clear...Read complete review

This thing will knock your socks off !! Its about time a company like TeleVue has designed an eyepiece that makes it seem your looking though the whole lens of your telescope- Good clear images and the field of view is worth calling all your friends over

VS

Most Liked Negative Review

 

way over-priced!

I have the 8mm teleview eye piece..It's very hard to focus unless you have xray vision or rabbit eyes! It's a very dark lens...

I have the 8mm teleview eye piece..It's very hard to focus unless you have xray vision or rabbit eyes! It's a very dark lens...

Reviewed by 56 customers

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Displaying reviews 1-5

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5.0

Beautiful!

By Cadby

from MANNING,SC

About Me Avid Adventurer

Verified Buyer

Pros

  • Easy To Use
  • Great Optics
  • Strong Construction
  • Widely Compatible Adapter

Cons

  • None

Best Uses

  • Astronomy

Comments about TeleVue ETHOS Telescope Eyepieces:

I have 82 degree FOV eyepieces but they do not compare to the 100 degree ethos! It's like upgrading from an old 19" TV to a 60" flat screen. When I looked through the eyepiece it felt like I was falling into space! I am using the 13mm in a 16" f/4.5 Dob, It's virtually coma free. Distant galaxies are easier to find and I can see more detail than ever before! There is a lot more I could say about the ethos but you really need to experience it for yourself! I am so glad I purchased and I can't wait to get more. Simply amazing!

  • Was this a gift?:
  • No

(0 of 7 customers found this review helpful)

 
1.0

way over-priced!

By Runner

from Pittsburgh Pa

About Me Avid Adventurer

Pros

    Cons

    • Adds No Function

    Best Uses

    • Astronomy
    • Terrestrial Viewing

    Comments about TeleVue ETHOS Telescope Eyepieces:

    I have the 8mm teleview eye piece..It's very hard to focus unless you have xray vision or rabbit eyes! It's a very dark lens...

    • Was this a gift?:
    • No

    (1 of 1 customers found this review helpful)

     
    5.0

    perfect,the service and the eyepiece

    By Stevs

    from SPRING GROVE,MN

    About Me Casual/ Recreational

    Verified Buyer

    Pros

    • Easy To Use
    • Great Optics
    • Strong Construction
    • Widely Compatible Adapter

    Cons

      Best Uses

      • Astronomy

      Comments about TeleVue ETHOS Telescope Eyepieces:

      It arrived in one day and I used it the next night. I don't think there is any better eyepiece.

      • Was this a gift?:
      • No
       
      5.0

      Excellent views

      By Damian

      from LAKE WORTH,FL

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy To Use
      • Great Optics
      • Strong Construction
      • Widely Compatible Adapter

      Cons

      • Heavy

      Best Uses

      • Astronomy

      Comments about TeleVue ETHOS Telescope Eyepieces:

      The most spectacular views I've yet to see .

      • Was this a gift?:
      • No

      (0 of 4 customers found this review helpful)

       
      5.0

      My first ETHOS Eyepiese

      By David

      from WOODLAWN,TN

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy To Use
      • Good Padding
      • Great Optics
      • Strong Construction
      • Widely Compatible Adapter

      Cons

        Best Uses

        • Astronomy
        • Terrestrial Viewing

        Comments about TeleVue ETHOS Telescope Eyepieces:

        I just got my 13 mm Eyepiece in the mail but the weather isn't letting me use my telescope :(. I cant wait to use it.

        • Was this a gift?:
        • No

        Displaying reviews 1-5

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        Customer Q & A

        Q1: I am considering the 13mm Ethos for a Meade EXT-LS, can this scope safely support the weight of this lens?

        A: The mount of the ETX-LS can handle the weight of the 13mm Ethos eyepiece.

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