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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
    $239.95
    $239.95 - $239.95
    $239.95

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

    TeleVue 40mm Plössl Eyepiece

    TeleVue
    In Stock

    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
  • $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95

    Celestron Omni 32mm 1.25" Plossl Eyepiece 93323

    Celestron
    More on the way

    This is a good quality fully-multicoated low power eyepiece at a price that's substantially lower than competitive Plössls. Its 50 degree apparent ...

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    $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95
  • 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
  • $451.00 - $451.00
    $451.00
    $451.00 - $451.00
    $451.00

    TeleVue 35mm 2" Panoptic Eyepiece

    TeleVue
    More on the way

    An excellent and physically-impressive premium-quality low power wide field 2" eyepiece for the serious deep space explorer. The Tele Vue 35mm Pano...

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    $451.00 - $451.00
    $451.00
    $451.00 - $451.00
    $451.00
  • $607.00 - $607.00
    $607.00
    $607.00 - $607.00
    $607.00

    TeleVue 41mm 2" Panoptic Eyepiece

    TeleVue
    More on the way

    This is a premium-quality wide field 2" eyepiece for the serious deep space explorer. Because of its long focal length, it is at its best with tele...

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    $607.00 - $607.00
    $607.00
    $607.00 - $607.00
    $607.00
  • $270.00 - $270.00
    $270.00
    $270.00 - $270.00
    $270.00

    TeleVue 55mm Plössl Eyepiece

    TeleVue
    More on the way

    If you have a 2" focuser on your f/8 and longer focal ratio telescope, here's a 2" eyepiece that will give you the widest possible field of view - ...

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    $270.00 - $270.00
    $270.00
    $270.00 - $270.00
    $270.00
  • 28mm 68° field argon-purged waterproof 2" eyepiece
    $299.99 - $299.99
    $299.99
    $299.99 - $299.99
    $299.99

    Explore Scientific 28mm 68° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    This Explore Scientific 28mm argon-purged is a substantial 2" eyepiece that gives impressively sharp and contrasty wide field views of nebulas, com...

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    $299.99 - $299.99
    $299.99
    $299.99 - $299.99
    $299.99
  • $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 30mm 52° Series Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 30mm 52° Series Argon-Purged Waterproof Eyepiece The Explore Scientific 30mm 52° Series eyepiece offers an exceptional balance o...

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    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99
  • Explore Scientific 62° 40mm 2" Waterproof Eyepiece
    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99

    Explore Scientific 40mm 62° 2" Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 40mm 62° 2" Waterproof Eyepiece The Explore Scientific 40mm 62° Series 2" Eyepiece is a superb choice for deep-sky observers and...

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    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99
  • 40mm 68° field argon-purged waterproof 2" eyepiece
    $519.99 - $519.99
    $519.99
    $519.99 - $519.99
    $519.99

    Explore Scientific 40mm 68° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    If you have room in your observing kit for only one long focal length wide angle eyepiece, this Explore Scientific 40mm argon-purged eyepiece may w...

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    $519.99 - $519.99
    $519.99
    $519.99 - $519.99
    $519.99
  • $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95

    Celestron Omni 40mm 1.25" Plossl Eyepiece

    Celestron
    In Stock

    This is an economical good quality low power eyepiece with fully-multicoated optics. With a 43 degree field of view it has the widest field possibl...

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    $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95
  • $179.99 - $179.99
    $179.99
    $179.99 - $179.99
    $179.99

    Explore Scientific 40mm 52° Series Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 40mm 52° Eyepiece – Ultra-Comfortable Viewing with Exceptional Contrast If you’re looking for an eyepiece that delivers generous...

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    $179.99 - $179.99
    $179.99
    $179.99 - $179.99
    $179.99
  • Explore Scientific 62° 32mm 2" Waterproof Eyepiece
    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99

    Explore Scientific 32mm 62° 2" Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 32mm 62° 2" Waterproof Eyepiece If you're aiming to take full advantage of your telescope's 2" focuser for wide-field, low-power...

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    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99
  • 34mm 68° field argon-purged waterproof 2" eyepiece
    $419.99 - $419.99
    $419.99
    $419.99 - $419.99
    $419.99

    Explore Scientific 34mm 68° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    This Explore Scientific 34mm argon-purged 2" is a big eyepiece - big in size, big in weight, big in field of view, big in performance. It gives you...

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    $419.99 - $419.99
    $419.99
    $419.99 - $419.99
    $419.99
  • $239.95 - $239.95
    $239.95
    $239.95 - $239.95
    $239.95

    Astro-Tech 21mm UWA 82° 2" Eyepiece

    Astro-Tech
    More on the way

    This Astro-Tech 21mm waterproof eyepiece is a substantial 2" eyepiece that will give impressively sharp and contrasty wide field views of nebulas, ...

    View full details
    $239.95 - $239.95
    $239.95
    $239.95 - $239.95
    $239.95
  • 31mm 2" 82° Luminos
    $279.95 - $279.95
    $279.95
    $279.95 - $279.95
    $279.95

    Celestron 31mm 2" 82° Luminos Eyepiece

    Celestron
    In Stock

    This 2" Celestron 31mm Luminos is an excellent low power eyepiece with an exceptionally wide field of view, one so wide you have to move your head ...

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    $279.95 - $279.95
    $279.95
    $279.95 - $279.95
    $279.95
  • 30mm 100° field argon-purged waterproof 3" eyepiece
    $1,099.99 - $1,099.99
    $1,099.99
    $1,099.99 - $1,099.99
    $1,099.99

    Explore Scientific 30mm 100° Field Argon-Purged Waterproof 3" Eyepiece

    Explore Scientific
    In Stock

    The 100° apparent field of the Explore Scientific 30mm waterproof 3" eyepiece provides superb maximum field/medium to medium-low power observing in...

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    $1,099.99 - $1,099.99
    $1,099.99
    $1,099.99 - $1,099.99
    $1,099.99
  • $399.00 - $399.00
    $399.00
    $399.00 - $399.00
    $399.00

    Pentax 30mm XW Extra Wide Angle 2" Eyepiece

    Pentax
    In Stock

    This medium focal length 2" Pentax eyepiece is an excellent choice for medium power deep space observing with long focal length refractors, reflect...

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    $399.00 - $399.00
    $399.00
    $399.00 - $399.00
    $399.00
  • $429.00 - $429.00
    $429.00
    $429.00 - $429.00
    $429.00

    Pentax 40mm XW Extra Wide Angle 2" Eyepiece

    Pentax
    In Stock

    This long focal length 2" Pentax eyepiece is outstanding for low power/wide field astronomical observing with long focal length refractors and cata...

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    $429.00 - $429.00
    $429.00
    $429.00 - $429.00
    $429.00
  • 32mm Brandon "flat top"
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 32mm Brandon "Flat Top" Eyepiece

    Vernonscope
    More on the way

    The 32mm Vernonscope Brandon "flat top" eyepiece is designed for nigh-perfect low power deep sky observing with any telescope type, at focal ratios...

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • 2" 48mm Brandon
    $375.00 - $375.00
    $375.00
    $375.00 - $375.00
    $375.00

    Vernonscope 2" 48mm Brandon Eyepiece

    Vernonscope
    More on the way

    The 2" 48mm Vernonscope Brandon eyepiece is designed for nigh-perfect low power deep sky observing with any telescope type that can use 2" eyepiece...

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    $375.00 - $375.00
    $375.00
    $375.00 - $375.00
    $375.00

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