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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. TeleVue - 8mm Plossl Eyepiece

    TeleVue - 8mm Plossl Eyepiece

     The 25mm, 20mm, 15mm, 11mm and 8mm Plössls round out the focal lengths for various observing from deep sky to planetary. They work best with Tele Vue Powermates to effectively double the number of focal lengths in your collection. Far superior to eyepieces usually provided as standard with most instruments.

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    Model#: EAP-08.0
    $100.00

  2. Televue - 8mm Ethos Eyepiece

    Televue - 8mm Ethos Eyepiece

    At NEAF 2008 Televue demonstrated a new 8mm focal length, 100° AFOV Ethos eyepiece. In addition to matching all the key performance criteria of its 13mm sibling, the new 8mm version is parfocal in 1 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: ETH-08.0
    $615.00

  3. 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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    FREE SHIPPING
    (48 States)
    Model#: EDL-08.0
    15% Off a Dob's Best Friend!

    Regular Price: $370.00

    Special Price: $315.00

  4. TeleVue - 7mm Nagler Type 6 Eyepiece

    TeleVue - 7mm Nagler Type 6 Eyepiece

    Nagler  7mm Type-6 82° Apparent Field EyepieceThis new 7mm Nagler proves there is no need to sacrifice field in order to gain sharpness and power ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EN6-07.0
    $330.00

  5. TeleVue - 6mm Ethos Eyepiece

    TeleVue - 6mm Ethos Eyepiece

    New Arrivals: Ethos 6mm & 17mm!Celebrate the start of the International Year of Astronomy 2009, the 400th anniversary of Galileo's first use of an astronomical telescope, by showing friends and neighbors the best of our wonderful universe ... Learn More
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    (48 States)
    Model#: ETH-06.0
    $615.00

  6. 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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    FREE SHIPPING
    (48 States)
    Model#: EDL-06.0
    15% Off a Dob's Best Friend!

    Regular Price: $370.00

    Special Price: $315.00

  7. TeleVue - 5mm Radian Eyepiece

    TeleVue - 5mm Radian Eyepiece

    Radian 5mm60°Apparent Field EyepieceThe Televue 5mm 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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    FREE SHIPPING
    (48 States)
    Model#: ERD-05.0

    Regular Price: $290.00

    Special Price: $240.00

  8. TeleVue - 5mm Nagler Type 6 Eyepiece

    TeleVue - 5mm Nagler Type 6 Eyepiece

    Nagler  5mm Type-6 82° Apparent Field EyepieceThis new 5mm Nagler proves there is no need to sacrifice field in order to gain sharpness and power ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EN6-05.0
    $330.00

  9. 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
    $255.00

  10. TeleVue - 4mm Radian Eyepiece

    TeleVue - 4mm Radian Eyepiece

    Radian 4mm60°Apparent Field EyepieceThe Televue 4mm 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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    FREE SHIPPING
    (48 States)
    Model#: ERD-04.0

    Regular Price: $290.00

    Special Price: $240.00

  11. 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
    $550.00

  12. 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
    $150.00

  13. 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
    FREE SHIPPING
    (48 States)
    Model#: ETH-04.7
    $650.00

  14. 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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    FREE SHIPPING
    (48 States)
    Model#: EDL-04.5
    15% Off a Dob's Best Friend!

    Regular Price: $370.00

    Special Price: $315.00

  15. TeleVue - 3mm to 6mm Nagler Zoom Eyepiece

    TeleVue - 3mm to 6mm Nagler Zoom Eyepiece

    THERE HAVE BEEN ZOOM EYEPIECES IN THE PAST, BUT NONE QUITE LIKE THE Tele Vue 3mm-6mm Nagler Zoom. Since the time of Galileo, short-focal-length (hence high-magnification) eyepieces have been notoriously difficult to look through ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: ENZ-0306
    $425.00

  16. 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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    FREE SHIPPING
    (48 States)
    Model#: ERD-03.0
    $290.00

  17. 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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    FREE SHIPPING
    (48 States)
    Model#: EPO-35.0
    $415.00

  18. TeleVue - 32mm Plossl Eyepiece

    TeleVue - 32mm Plossl Eyepiece

    Plössl  32mm50° Apparent Field EyepieceThe 32mm Plössl, with its larger 50° apparent field, will deliver the same true field as the 40mm but with higher magnification ... Learn More
    Model#: EPL-32.0
    $150.00

  19. 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
    FREE SHIPPING
    (48 States)
    Model#: EN5-31.0
    $695.00

  20. TeleVue - 3.7mm Ethos-SX Eyepiece

    TeleVue - 3.7mm Ethos-SX Eyepiece

    With 110°, the Ethos-SX has 21% more AFOV area than the 100° Ethos design. This permits a nice 62% power increase from a 6mm Ethos, while retaining 68% of its TFOV. The 3 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: ETH-03.7
    $650.00

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