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Eyepieces

The specifications of a telescope are NOT the only specs that matter. The other half of the equation is the specifications of the eyepiece. Telescope eyepieces are made in different models and sizes to accommodate different observing methods and celestial objects. For example, understanding the focal length of your optical tube divided by the focal length of your eyepiece will result in magnification, which in return can tell you whether it is more suitable for deep space low surface brightness observation or planetary/terrestrial high surface brightness observation. For example, if you wanted to observe an object such as the Andromeda Galaxy with a large apparent diameter, an eyepiece with a long focal length and large apparent field of view would excel over an eyepiece with a shorter focal length and small apparent field of view because it would be able to accommodate the size of the object at low magnification and high FOV while not getting dimmer images as you would with short focal lengths. If you plan on observing planets, a short focal length eyepiece with a small FOV will result in high magnification to observe details on the surface (eg. Great Red Spot). You'll get a dimmer image, but since planets are already bright as it is, this won't be an issue. - Note: Almost all eyepieces come in 2" or 1.25" barrel size forms.

 


Telescope Focal Length

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  1. EDL-17.3

    TeleVue - 17.3mm 72° Delos Eyepiece

    Tele Vue is pleased to introduce the 17.3mm, Delos eyepieces, the first available focal lengths in a newmid-to-short focal length line of 20mm eye-relief,72° apparent field of view eyepieces. ... Learn More
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    (48 States)
    Model#: EDL-17.3
    $340.00

  2. Delos 14mm Eyepiece by TeleVue

    TeleVue - 14mm 72° Delos Eyepiece

    This Tele Vue Delos Eyepiece has a 14mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

    ...
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    (48 States)
    Model#: EDL-14.0
    $340.00

  3. 12mm Delos Eyepiece by TeleVue

    TeleVue - 12mm 72° Delos Eyepiece

    This TeleVue Delos Eyepiece has a 12mm focal length and is presented in a 1.25" format.Continuously adjustable height eyeguard system that can be locked in any position

    ...
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    (48 States)
    Model#: EDL-12.0
    $340.00

  4. 8mm Delos Eyepiece by TeleVue

    TeleVue - 8mm 72° Delos Eyepiece

    This TeleVue Delos Eyepiece has a 8mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

    ...
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    (48 States)
    Model#: EDL-08.0
    $340.00

  5. 4.5mm Delos Eyepiece by TeleVue

    TeleVue - 4.5mm 72° Delos Eyepiece

    This Tele Vue Delos Eyepiece has a 4.5mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

    ...
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    (48 States)
    Model#: EDL-04.5
    $340.00

  6. 3.5mm Delos Eyepiece by TeleVue

    TeleVue - 3.5mm 72° Delos Eyepiece

    This Tele Vue Delos Eyepiece has a 3.5mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

    ...
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    (48 States)
    Model#: EDL-03.5
    $340.00

  7. TeleVue - 10mm 72° Delos Eyepiece

    TeleVue - 10mm 72° Delos Eyepiece

    This TeleVue Delos Eyepiece has a 10mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

    ...
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    (48 States)
    Model#: EDL-10.0
    $340.00

  8. Delos 6mm Eyepiece by TeleVue

    TeleVue - 6mm 72° Delos Eyepiece

    This TeleVue Delos Eyepiece has a 6mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

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    (48 States)
    Model#: EDL-06.0
    $340.00

  9. TeleVue - 4.7mm Ethos SX 110° Eyepiece

    TeleVue - 4.7mm Ethos SX 110° Eyepiece

    The new 4.7mm Ethos-SX, like its 3.7mm progenitor, is designed and crafted to combine its exceedingly wide field of view with all the contrast, color-rendition, distortion correction and center-to-edge sharpness needed to achieve that natural view ... Learn More
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    (48 States)
    Model#: ETH-04.7
    $610.00

  10. TeleVue BIG Paracorr Type-2 for 3" Focusers

    TeleVue - BIG Paracorr Type-2 for 3" Focusers

    extends the Paracorr type 2's optical benefits for imaging applications by

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    (48 States)
    Model#: VIP-3010
    $1,030.00

  11. TeleVue - 31mm Nagler Type 5 Eyepiece

    TeleVue - 31mm Nagler Type 5 Eyepiece

    Nagler  31mm Type-582° Apparent Field EyepieceWith the 31mm, the unique 6-element design using four exotic glasses, maintains the contrast advancement of the Type 4s while achieving a true field area 82% larger than the 22mm Type 4!  Owners ... Learn More
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    (48 States)
    Model#: EN5-31.0
    $650.00

  12. TeleVue - 55mm Plossl Eyepiece

    TeleVue - 55mm Plossl Eyepiece

    Plössl  55mm50°Apparent Field EyepieceThe 55mm focal length has the largest true field possible for 2" eyepiece holders at 3 times the true field area of any 1¼" eyepiece ... Learn More
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    (48 States)
    Model#: EPL-55.0
    $240.00

  13. TeleVue - 19mm Panoptic Eyepiece

    TeleVue - 19mm Panoptic Eyepiece

    Size, weight and performance make the 19mm an ideal mid power chioce. Ideal "soul-mate" to Bino Vue. Parfocal with 15mm and other smaller Plssls and Naglers.

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    (48 States)
    Model#: EPO-19.0
    $245.00

  14. TeleVue - 24mm Panoptic Eyepiece

    TeleVue - 24mm Panoptic Eyepiece

    This Sky & Telescope "Hot Product for 2003" is designed to produce the largest true field possible in a 1-1/4" eyepiece. (Its 27mm field stop is the same as the 32mm Tele Vue Plssl) ... Learn More
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    (48 States)
    Model#: EPO-24.0
    $310.00

  15. TeleVue - 27mm Panoptic Eyepiece

    TeleVue - 27mm Panoptic Eyepiece

    Housed in a 2" barrel like the 35mm, the 27mm is lighter & smaller. It's perfect for any telescope size, type or speed, where a little more magnification is desired, yet still allows full field viewing with eyeglasses ... Learn More
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    (48 States)
    Model#: EPO-27.0
    $340.00

  16. TeleVue - 35mm Panoptic Eyepiece

    TeleVue - 35mm Panoptic Eyepiece

    The 35mm has a large true field with plenty of eye relief for eyeglass wearers. When combined with a Paracorr to correct the coma of an f/4.5 Newtonian, performance is spectacular across the 68 degree field

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    (48 States)
    Model#: EPO-35.0
    $380.00

  17. TeleVue - 41mm Panoptic Eyepiece

    TeleVue - 41mm Panoptic Eyepiece

    The 41mm Panoptic eyepiece is a big brother to the 24mm Panoptic (largest 1.25" field). With its 46mm field stop, the 41mm Panoptic delivers the largest 2" field possible ... Learn More
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    (48 States)
    Model#: EPO-41.0
    $510.00

  18. TeleVue - 3mm Radian Eyepiece*

    TeleVue - 3mm Radian Eyepiece*

    Radian 3mm 60°Apparent Field EyepieceThe Televue 3mm Radian Eyepiece achieves optimum full field sharpness and freedom from distortion.  It incorporates exotic glass types and is fully multi-coated for maximum performance properties

    ...
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    (48 States)
    Model#: ERD-03.0
    10% off!

    Regular Price: $290.00

    Special Price: $261.00

  19. TeleVue - 14mm Radian Eyepiece*

    TeleVue - 14mm Radian Eyepiece*

    Radian 14mm60°Apparent Field EyepieceThe Televue 14mm Radian Eyepiece achieves optimum full field sharpness and freedom from distortion.  It incorporates exotic glass types and is fully multi-coated for maximum performance properties

    ...
    Learn More
    FREE SHIPPING
    (48 States)
    Model#: ERD-14.0
    10% off!

    Regular Price: $290.00

    Special Price: $261.00

  20. TeleVue - 40mm Plossl Eyepiece

    TeleVue - 40mm Plossl Eyepiece

    Plössl 40mm43°Apparent Field EyepieceIn the 1¼" series Tele Vue included a long eye-relief 40mm focal length in the series with a 43° apparent field ... Learn More
    Model#: EPL-40.0
    $145.00

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