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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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  • $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
  • $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95

    Astro-Tech 3.2mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 3.2mm Paradigm Dual ED eyepiece is excellent for medium high to high power magnification viewing with short to medium focal length ...

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    $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95
  • $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
  • $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
  • $452.00 - $452.00
    $452.00
    $452.00 - $452.00
    $452.00

    TeleVue 3mm to 6mm Nagler 1.25" Zoom Eyepiece

    TeleVue
    More on the way

    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
  • $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
  • $289.00 - $289.00
    $289.00
    $289.00 - $289.00
    $289.00

    TeleVue 19mm Panoptic Eyepiece

    TeleVue
    More on the way

    An excellent premium-quality medium power wide field eyepiece.  The 19mm Panoptic, for example, will give you about a 1.13 degree field at 60x with...

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    $289.00 - $289.00
    $289.00
    $289.00 - $289.00
    $289.00
  • $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
  • CrossAim 12.5mm dual crosshair Plössl
    $104.95 - $104.95
    $104.95
    $104.95 - $104.95
    $104.95

    Celestron Crossaim 12.5mm Dual Crosshair Plössl Eyepiece 93235

    Celestron
    More on the way

    This Celestron "CrossAim" 12.5mm illuminated reticle eyepiece has dual crosshairs for use with any make or model telescope and/or off-axis guider. ...

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    $104.95 - $104.95
    $104.95
    $104.95 - $104.95
    $104.95
  • $128.00 - $128.00
    $128.00
    $128.00 - $128.00
    $128.00

    TeleVue 20mm Plössl Eyepiece

    TeleVue
    In Stock

    This is a very good medium power eyepiece for lunar observing, resolving globular clusters, picking up detail in emission and reflection nebulas, e...

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    $128.00 - $128.00
    $128.00
    $128.00 - $128.00
    $128.00
  • $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
  • 16mm 68° field argon-purged waterproof 1.25" eyepiece
    $219.99 - $219.99
    $219.99
    $219.99 - $219.99
    $219.99

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

    Explore Scientific
    In Stock

    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 - $219.99
    $219.99
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 3.5mm Nagler Type 6 Eyepiece

    TeleVue
    More on the way

    This is an exceptional short focal length ultra wide field eyepiece. It uses seven optical elements for optimized performance across a very wide fi...

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    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • Explore Scientific 62° 9mm 1.25" Waterproof Eyepiece
    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 9mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 9mm 62° 1.25" Waterproof Eyepiece The Explore Scientific 9mm 62° Series 1.25" eyepiece brings together solid performance, qualit...

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    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 7mm Nagler Type 6 Eyepiece

    TeleVue
    More on the way

    This is a superb short focal length ultra wide field eyepiece designed as an upgrade to the original and highly-prized 7mm Nagler. This 1.25" eyepi...

    View full details
    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95

    Celestron 7mm 1.25" 82º Luminos Eyepiece

    Celestron
    More on the way

    This sharp 7mm Celestron Luminos eyepiece has a wide and flat 82° field of view for "picture window" views, even at very high powers . This excepti...

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    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95
  • Explore Scientific 62° 5.5mm 1.25" Waterproof Eyepiece
    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 5.5mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 5.5mm 62° Series 1.25" Waterproof Eyepiece If you’re looking to pull in crisp planetary detail, split tight double stars, or ta...

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    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99
  • 9mm 100° field argon-purged waterproof 2" eyepiece
    $579.99 - $579.99
    $579.99
    $579.99 - $579.99
    $579.99

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

    Explore Scientific
    In Stock

    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 - $579.99
    $579.99
  • Explore Scientific 62° 14mm 1.25" Waterproof Eyepiece
    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 62° 14mm 1.25" Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 14mm 62° Series 1.25" Waterproof Eyepiece The Explore Scientific 14mm 62° Series eyepiece is an excellent choice for amateur and...

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    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99
  • 10mm 1.25" 82° Luminos
    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95

    Celestron 10mm 1.25" 82° Luminos Eyepiece

    Celestron
    In Stock

    This exceptional Celestron 10mm Luminos ultra wide field 1.25" eyepiece uses seven optical elements for optimized performance across a very wide an...

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    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95

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