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Eyepieces & Barlows

What is an eyepiece: A telescope collects the light of faint and/or distant objects and forms a fixed-size image of those objects at the telescope’s prime focus. An eyepiece is simply a small microscope that enlarges a portion of that image so you can see more detail.

The importance of good eyepieces: Every photon of light collected by a telescope passes through an eyepiece before it reaches your eye. That light is therefore afflicted by every optical problem in that eyepiece – and the cheaper the eyepiece, the more problems it is likely to have. A $10 eyepiece will make a $2000 telescope perform like a $10 toy. If your telescope’s eyepieces are the simple two-element designs labeled H (Huygenian), R (Ramsden), or SR (symmetrical Ramsden), they are basically toy eyepieces and should be replaced.

Eyepieces are half of your scope’s optical system, and usually the most complex half. They should be at least the same quality as your scope (preferably better). A good telescope won’t improve a poor eyepiece – but a good eyepiece will get the most out of a so-so scope.

What eyepiece should I get first: When buying your first eyepieces, resist the urge to immediately buy the highest powers possible. Very high powers require experienced observers and excellent seeing conditions (dark, clear, steady skies) to get the most from them. Medium power eyepieces, on the other hand, give good images over a much wider range of seeing conditions.

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  • $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95

    Astro-Tech 2X Telecentric Extender Barlow for 1.25" Eyepieces

    Astro-Tech
    In Stock

    This Astro-Tech 2x Telecentric Extender, ie a Barlow, is a great way to cleanly double the power of any 1.25" eyepiece in your collection . . . The...

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    $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95
  • 30mm 82° field argon-purged waterproof 2" eyepiece
    Save $300.00 Save $0.00
    $499.99
    $499.99 - $499.99
    $499.99
    $199.99
    $199.99 - $199.99
    $199.99

    Explore Scientific 30mm 82° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    This 82° field Explore Scientific 30mm 2" argon-purged waterproof eyepiece gives you the big picture, making you feel like you're relaxing in front...

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    $499.99
    $499.99 - $499.99
    $499.99
    $199.99
    $199.99 - $199.99
    $199.99
    Save $300.00 Save $0.00
  • $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00

    Astro-Tech 15.5mm 1.25" PF Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 15.5mm PF series eyepiece has excellent eyerelief and a fantastic flat field to further enhance your viewing pleasure. This Astro-T...

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    $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00
  • $370.00 - $370.00
    $370.00
    $370.00 - $370.00
    $370.00

    TeleVue 24mm Panoptic Eyepiece

    TeleVue
    More on the way

    This is one of the most popular premium-quality 1.25" low to medium power wide field eyepieces. An ED glass element provides high contrast for obse...

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    $370.00 - $370.00
    $370.00
    $370.00 - $370.00
    $370.00
  • Sold out
    $999.99
    $999.99 - $999.99
    $999.99
    $249.99
    $249.99 - $249.99
    $249.99

    Explore Scientific 25mm 100° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    Sold Out

    The 100° apparent field of this Explore Scientific first-of-its-kind 25mm argon-purged waterproof 2" eyepiece provides superb maximum field/medium ...

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    $999.99
    $999.99 - $999.99
    $999.99
    $249.99
    $249.99 - $249.99
    $249.99
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  • $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00

    Astro-Tech 19mm 1.25" PF Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 19mm PF series eyepiece has excellent eyerelief and a fantastic flat field to further enhance your viewing pleasure. So, I know som...

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    $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00
  • 9mm 100° field argon-purged waterproof 2" eyepiece
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    $579.99
    $579.99 - $579.99
    $579.99
    $199.99
    $199.99 - $199.99
    $199.99

    Explore Scientific 9mm 100° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    Sold Out

    The Explore Scientific 9mm argon-purged waterproof 2" eyepiece combines a high power capability with a 100° apparent field to provide a jaw-droppin...

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    $579.99
    $579.99 - $579.99
    $579.99
    $199.99
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    $199.99
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  • Save $290.00 Save $0.00
    $439.99
    $439.99 - $439.99
    $439.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 24mm 82° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    This 82° field Explore Scientific 24mm 2" argon-purged waterproof eyepiece makes observing feel like you're relaxing in front of a picture window o...

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    $439.99
    $439.99 - $439.99
    $439.99
    $149.99
    $149.99 - $149.99
    $149.99
    Save $290.00 Save $0.00
  • 16mm 68° field argon-purged waterproof 1.25" eyepiece
    Save $140.00 Save $0.00
    $219.99
    $219.99 - $219.99
    $219.99
    $79.99
    $79.99 - $79.99
    $79.99

    Explore Scientific 16mm 68° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
    More on the way

    This Explore Scientific 16mm argon-purged eyepiece is a truly fine medium power eyepiece with a substantial 68° field of view that can provide a co...

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    $219.99
    $219.99 - $219.99
    $219.99
    $79.99
    $79.99 - $79.99
    $79.99
    Save $140.00 Save $0.00
  • $163.00 - $163.00
    $163.00
    $163.00 - $163.00
    $163.00

    TeleVue 32mm Plössl Eyepiece

    TeleVue
    In Stock

    This is a very good low power/wide field eyepiece for capturing galaxy pairs and galaxy clusters, viewing emission and reflection nebulas in their ...

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    $163.00 - $163.00
    $163.00
    $163.00 - $163.00
    $163.00
  • $734.00 - $734.00
    $734.00
    $734.00 - $734.00
    $734.00

    TeleVue 31mm 2" Nagler Type 5 Eyepiece

    TeleVue
    More on the way

    This Nagler Type Five eyepiece uses a new six-lens design that reduces the size and weight of this 31mm eyepiece to less than that of the previous ...

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    $734.00 - $734.00
    $734.00
    $734.00 - $734.00
    $734.00
  • Sold out
    $679.99
    $679.99 - $679.99
    $679.99
    $199.99
    $199.99 - $199.99
    $199.99

    Explore Scientific 14mm 100° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    Sold Out

    The 100° apparent field of the Explore Scientific 14mm argon-purged waterproof 2" eyepiece provides incredible maximum field/medium power observing...

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    $679.99
    $679.99 - $679.99
    $679.99
    $199.99
    $199.99 - $199.99
    $199.99
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  • $241.00 - $241.00
    $241.00
    $241.00 - $241.00
    $241.00

    TeleVue 2.5X Powermate Image Amplifier for 1.25" Eyepiece

    TeleVue
    In Stock

    While not technically a Barlow, this unique new 4-lens 2.5x image amplifier performs the same functions, but at a higher level of optical correctio...

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    $241.00 - $241.00
    $241.00
    $241.00 - $241.00
    $241.00
  • $141.00 - $141.00
    $141.00
    $141.00 - $141.00
    $141.00

    TeleVue 2X Barlow for 1.25" Eyepieces

    TeleVue
    More on the way

    This 2-element Barlow has superb sharpness to match that of TeleVue eyepieces. Despite being "merely" an achromatic system, good design gives it be...

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    $141.00 - $141.00
    $141.00
    $141.00 - $141.00
    $141.00
  • $360.00 - $360.00
    $360.00
    $360.00 - $360.00
    $360.00

    TeleVue 2X Powermate Image Amplifier for 2" Eyepieces, with 1.25" Eyepiece Adapter

    TeleVue
    In Stock

    If you need a very high quality 2x Barlow for 2" eyepieces, look no further than this TeleVue Powermate. While not technically a Barlow, this uniqu...

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    $360.00 - $360.00
    $360.00
    $360.00 - $360.00
    $360.00
  • 8-24mm zoom, 1.25"
    $107.95 - $107.95
    $107.95
    $107.95 - $107.95
    $107.95

    Celestron 8-24mm Zoom, 1.25" Eyepiece

    Celestron
    More on the way

    This fully multicoated Celestron 8-24mm zoom eyepiece gives you a virtually infinite number of magnifications in a single very reasonably-priced ey...

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    $107.95 - $107.95
    $107.95
    $107.95 - $107.95
    $107.95
  • $283.00 - $283.00
    $283.00
    $283.00 - $283.00
    $283.00

    Televue 18.2mm Delite 62° 1.25" Eyepiece

    TeleVue
    More on the way

    The 18.2mm TeleVue DeLite eyepiece is a lighter, more compact, less expensive, 62° field/20mm eye relief version of the famed TeleVue Delos eyepiec...

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    $283.00 - $283.00
    $283.00
    $283.00 - $283.00
    $283.00
  • $41.95 - $41.95
    $41.95
    $41.95 - $41.95
    $41.95

    Celestron 2X Omni Barlow for 1.25" Eyepieces

    Celestron
    In Stock

    This is a good quality 1.25" 2x two-element fully multicoated Barlow. Its relatively short 3" length allows use in star diagonals. A thumbscrew hol...

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    $41.95 - $41.95
    $41.95
    $41.95 - $41.95
    $41.95
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 13mm Nagler Type 6 Eyepiece

    TeleVue
    More on the way

    This premium 1.25" eyepiece from Al Nagler uses seven optical elements for optimized performance across a very wide 82° field of view. Its wide fie...

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    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • Kit of 1.25" Plössl eyepieces and visual accessories
    $239.95 - $239.95
    $239.95
    $239.95 - $239.95
    $239.95

    Celestron Kit of 1.25" Plössl eyepieces and visual accessories 94303

    Celestron
    In Stock

    This Celestron accessory kit consists of fourteen Celestron 1.25" visual accessories that will get you started observing right with your new Celest...

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    $239.95 - $239.95
    $239.95
    $239.95 - $239.95
    $239.95
  • 13mm 1.25"/2" 100° field Ethos
    $693.00 - $693.00
    $693.00
    $693.00 - $693.00
    $693.00

    TeleVue 13mm 1.25"/2" 100° Field Ethos

    TeleVue
    In Stock

    The 100° apparent field of this new TeleVue 13mm Ethos eyepiece provides a field area more than 50% larger than the "space-walking" 82° field of a ...

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    $693.00 - $693.00
    $693.00
    $693.00 - $693.00
    $693.00
  • $163.00 - $163.00
    $163.00
    $163.00 - $163.00
    $163.00

    TeleVue 40mm Plössl Eyepiece

    TeleVue
    More on the way

    This is a very good low power/wide field eyepiece that provides the widest field possible from a 1.25" eyepiece. Its field stop (the rim inside the...

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    $163.00 - $163.00
    $163.00
    $163.00 - $163.00
    $163.00
  • $452.00 - $452.00
    $452.00
    $452.00 - $452.00
    $452.00

    TeleVue 3mm to 6mm Nagler 1.25" Zoom Eyepiece

    TeleVue
    In Stock

    In conventional zooms, the apparent field of view and the usable eye relief change as the focal length changes. Likewise, objects go markedly out o...

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    $452.00 - $452.00
    $452.00
    $452.00 - $452.00
    $452.00
  • Sold out
    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99

    Explore Scientific 14mm 82° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
    Sold Out

    This medium power 14mm Explore Scientific 82° field argon-purged eyepiece will show you surprisingly wide deep space panoramas with any type or foc...

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    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99
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