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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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  • $239.95 - $239.95
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    $239.95 - $239.95
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    Astro-Tech 28mm UWA 82° 2" Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 28mm waterproof eyepiece is a substantial 2" eyepiece that will give impressively sharp and contrasty wide field views of nebulas, ...

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    $239.95 - $239.95
    $239.95
    $239.95 - $239.95
    $239.95
  • $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95

    Astro-Tech 4mm UWA 82° 1.25" Eyepiece

    Astro-Tech
    In Stock

    This 4mm Astro-Tech 82° field eyepiece is an excellent very high power, very wide field eyepiece for resolving globular clusters and closely-spaced...

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    $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95
  • $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95

    Astro-Tech 7mm UWA 82° 1.25" Eyepiece

    Astro-Tech
    In Stock

    This 7mm Astro-Tech 82° field eyepiece is an excellent very high power, very wide field eyepiece for resolving globular clusters and closely-spaced...

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    $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95
  • $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95

    Astro-Tech 10mm UWA 82° 1.25" Eyepiece

    Astro-Tech
    In Stock

    This 10mm Astro-Tech 82° field eyepiece is an excellent medium to high power, very wide field eyepiece that will work well with any telescope. This...

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    $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95
  • $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95

    Astro-Tech 13mm UWA 82° 1.25" Eyepiece

    Astro-Tech
    In Stock

    This 13mm Astro-Tech 82° field eyepiece will show you surprisingly wide deep space panoramas with any type or focal ratio telescope. This 82° 13mm ...

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    $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95
  • $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95

    Astro-Tech 16mm UWA 82° 1.25" Eyepiece

    Astro-Tech
    In Stock

    This 16mm Astro-Tech 82° field eyepiece will show you surprisingly wide deep space panoramas with any type or focal ratio telescope. This 82° 16mm ...

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    $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95
  • $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
  • $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
  • $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
    More on the way

    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
  • 11mm 82° field argon-purged waterproof 1.25" eyepiece
    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99

    Explore Scientific 11mm 82° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
    More on the way

    The "picture window on space" viewing experience of this 82° field Explore Scientific 11mm 1.25" argon-purged eyepiece gives you the magnification ...

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    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 9mm Nagler Type 6 Eyepiece

    TeleVue
    In Stock

    This is an exceptional short focal length ultra wide field eyepiece designed as an upgrade to the original and highly-prized 9mm Nagler for high ma...

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    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 6mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    In Stock

    The 6mm TeleVue Delos is designed for no-holds-barred high power/high contrast solar system and deep space observing with any telescope. It has a l...

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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • $512.00 - $512.00
    $512.00
    $512.00 - $512.00
    $512.00

    TeleVue 22mm 2" Nagler Type 4 Eyepiece

    TeleVue
    More on the way

    The TeleVue 2" 22mm Nagler Type 4 replaces the 20mm Nagler Type 2, considered by many to be the finest eyepiece ever made. How do you improve on a ...

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    $512.00 - $512.00
    $512.00
    $512.00 - $512.00
    $512.00
  • Sold out
    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99

    Explore Scientific 4.7mm 82° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
    Sold Out

    This Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale. This 4.7mm Explore Scientific 82° f...

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    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99
    Sold out
  • $388.00 - $388.00
    $388.00
    $388.00 - $388.00
    $388.00

    TeleVue 16mm Nagler Type 5 Eyepiece

    TeleVue
    In Stock

    This premium 1.25" eyepiece from Al Nagler uses six optical elements for optimized performance across a very wide field of view. Several different ...

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    $388.00 - $388.00
    $388.00
    $388.00 - $388.00
    $388.00
  • $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 10mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    The 10mm TeleVue Delos is a "do-it-all" eyepiece designed for medium high power/high contrast solar system and deep space observing with all telesc...

    View full details
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • 18mm 82° field argon-purged waterproof 2" eyepiece
    $319.99 - $319.99
    $319.99
    $319.99 - $319.99
    $319.99

    Explore Scientific 18mm 82° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    More on the way

    This 82° field Explore Scientific 18mm 2" argon-purged waterproof eyepiece makes observing with many telescopes feel like you're taking a stroll th...

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    $319.99 - $319.99
    $319.99
    $319.99 - $319.99
    $319.99
  • 30mm 82° field argon-purged waterproof 2" eyepiece
    $499.99 - $499.99
    $499.99
    $499.99 - $499.99
    $499.99

    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 - $499.99
    $499.99
  • $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 17.3mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    In Stock

    The 17.3mm TeleVue Delos is a "do-it-all" eyepiece designed for medium power/high contrast solar system and deep space observing with all telescope...

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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • 12mm 1.25" 72° field Delos
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 12mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    In Stock

    The 12mm TeleVue Delos puts the performance of the acclaimed TeleVue 13mm Ethos eyepiece - high contrast, a neutral color balance, and full field s...

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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • 8mm 1.25" 72° field Delos
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 8mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    The 8mm TeleVue Delos puts the performance of the original ground-breaking TeleVue 9mm Ethos eyepiece - high contrast, a neutral color balance, and...

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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • $439.99 - $439.99
    $439.99
    $439.99 - $439.99
    $439.99

    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 - $439.99
    $439.99
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 5mm Nagler Type 6 Eyepiece

    TeleVue
    More on the way

    This is an optically superb short focal length ultra wide field eyepiece designed as an upgrade to the famed original 4.8mm Nagler. Due to the sign...

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    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • 4.5mm 1.25" 72° field Delos
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 4.5mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    The 4.5mm TeleVue Delos combines high image quality and high power with a long 20mm eye relief that makes it ideal for eyeglass wearers. The majori...

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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

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