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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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  • Original price $65.00 - Original price $65.00
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    Astro-Tech 5mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    More on the way

    This Astro-Tech 5mm Paradigm Dual ED eyepiece is excellent for medium to medium high magnification viewing with short to medium focal length refrac...

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    Original price $65.00 - Original price $65.00
    Original price
    $65.00
    $65.00 - $65.00
    Current price $65.00
  • Original price $119.95
    Original price $119.95 - Original price $119.95
    Original price $119.95
    Current price $99.95
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    Current price $99.95

    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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    Original price $119.95
    Original price $119.95 - Original price $119.95
    Original price $119.95
    Current price $99.95
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    Current price $99.95
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  • Original price $65.00 - Original price $65.00
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    $65.00
    $65.00 - $65.00
    Current price $65.00

    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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    Original price $65.00 - Original price $65.00
    Original price
    $65.00
    $65.00 - $65.00
    Current price $65.00
  • Original price $0.00 - Original price $0.00
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    $279.95
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    Current price $279.95

    Astro-Tech 4.8mm 110° Field Waterproof 1.25"/2" Eyepiece

    Astro-Tech
    In Stock

    The Astro-Tech 4.8mm o-ring sealed 1.25"/2" eyepiece combines a high power capability with a 110° apparent field to provide a jaw-dropping observin...

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    Original price $0.00 - Original price $0.00
    Original price $0.00
    $279.95
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    Current price $279.95
  • Original price $268.01 - Original price $268.01
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    Current price $268.01

    Televue 5mm Delite 62° 1.25" Eyepiece

    TeleVue
    In Stock

    The 5mm TeleVue DeLite eyepiece is a lighter, more compact, less expensive, 62° field/20mm eye relief version of the famed TeleVue Delos eyepieces,...

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    Original price $268.01 - Original price $268.01
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    Current price $268.01
  • Original price $229.99 - Original price $229.99
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    Current price $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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    Original price $229.99 - Original price $229.99
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    Current price $229.99
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  • Original price $269.00 - Original price $269.00
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    $269.00
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    Current price $269.00

    Televue 4mm Delite 62º 1.25” Eyepiece EDE-04.0

    TeleVue
    More on the way

    The TeleVue 4mm DeLite eyepiece is a lighter, more compact, less expensive, 62° field/20mm eye relief version of the famed TeleVue Delos eyepieces,...

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    Original price $269.00 - Original price $269.00
    Original price
    $269.00
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    Current price $269.00
  • Original price $99.95 - Original price $99.95
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    Current price $99.95

    Celestron 5mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This Celestron X-Cel LX 5mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. It gives you good...

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    Original price $99.95 - Original price $99.95
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    Current price $99.95
  • Original price $299.00
    Original price $299.00 - Original price $299.00
    Original price $299.00
    Current price $269.00
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    Current price $269.00

    Pentax 5mm XW Extra Wide Angle Eyepiece

    Pentax
    In Stock

    This short focal length Pentax eyepiece has a very wide 70° field of view and very long 20mm eye relief, a uniquely useful combination not matched ...

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    Original price $299.00
    Original price $299.00 - Original price $299.00
    Original price $299.00
    Current price $269.00
    $269.00 - $269.00
    Current price $269.00
    Save $30.00 Save $0.00
  • Original price $299.00
    Original price $299.00 - Original price $299.00
    Original price $299.00
    Current price $269.00
    $269.00 - $269.00
    Current price $269.00

    Pentax 3.5mm XW Extra Wide Angle Eyepiece

    Pentax
    More on the way

    This very short focal length Pentax eyepiece has a wide 70° field of view combined with a long 20mm eye relief for eyeglass use. It's a combination...

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    Original price $299.00
    Original price $299.00 - Original price $299.00
    Original price $299.00
    Current price $269.00
    $269.00 - $269.00
    Current price $269.00
    Save $30.00 Save $0.00
  • Original price $657.01 - Original price $657.01
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    $657.01
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    Current price $657.01

    TeleVue 4.7mm 1.25"/2" 110° Field Ethos-SX Eyepiece

    TeleVue
    More on the way

    Nearly half a century ago, Al Nagler designed the optics for the LEM (Lunar Excursion Module) simulator that was used to train NASA astronauts how ...

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    Original price $657.01 - Original price $657.01
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    $657.01
    $657.01 - $657.01
    Current price $657.01
  • Original price $657.01 - Original price $657.01
    Original price
    $657.01
    $657.01 - $657.01
    Current price $657.01

    TeleVue 3.7mm 1.25"/2" 110° Field Ethos-SX Eyepiece

    TeleVue
    More on the way

    Nearly half a century ago, Al Nagler designed the optics for the LEM (Lunar Excursion Module) simulator that was used to train NASA astronauts how ...

    View full details
    Original price $657.01 - Original price $657.01
    Original price
    $657.01
    $657.01 - $657.01
    Current price $657.01
  • Original price $89.99 - Original price $89.99
    Original price
    $89.99
    $89.99 - $89.99
    Current price $89.99

    Explore Scientific 4.5mm 52° Series Waterproof Eyepiece

    Explore Scientific
    In Stock

    Looking for something out of the ordinary for your next eyepiece?  The Explore Scientific 52° series is a strong contender for necessary addition t...

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    Original price $89.99 - Original price $89.99
    Original price
    $89.99
    $89.99 - $89.99
    Current price $89.99
  • Original price $386.01 - Original price $386.01
    Original price
    $386.01
    $386.01 - $386.01
    Current price $386.01

    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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    Original price $386.01 - Original price $386.01
    Original price
    $386.01
    $386.01 - $386.01
    Current price $386.01
  • Original price $335.00 - Original price $335.00
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    $335.00
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    Current price $335.00

    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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    Original price $335.00 - Original price $335.00
    Original price
    $335.00
    $335.00 - $335.00
    Current price $335.00
  • Original price $335.00 - Original price $335.00
    Original price
    $335.00
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    Current price $335.00

    TeleVue 3.5mm Nagler Type 6 Eyepiece

    TeleVue
    In Stock

    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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    Original price $335.00 - Original price $335.00
    Original price
    $335.00
    $335.00 - $335.00
    Current price $335.00
  • Original price $29.95 - Original price $29.95
    Original price
    $29.95
    $29.95 - $29.95
    Current price $29.95

    Celestron Omni 4mm 1.25" Plossl Eyepiece 93316

    Celestron
    In Stock

    This fully-multicoated Celestron eyepiece is one of the shortest focal length and most economically-priced Plössl eyepieces available. It's designe...

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    Original price $29.95 - Original price $29.95
    Original price
    $29.95
    $29.95 - $29.95
    Current price $29.95
  • Original price $387.00 - Original price $387.00
    Original price
    $387.00
    $387.00 - $387.00
    Current price $387.00

    TeleVue 3.5mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    The 3.5mm TeleVue Delos is designed to produce very high power/high contrast/high quality images with any telescope. It has a long 20mm eye relief ...

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    Original price $387.00 - Original price $387.00
    Original price
    $387.00
    $387.00 - $387.00
    Current price $387.00
  • Original price $279.95 - Original price $279.95
    Original price
    $279.95
    $279.95 - $279.95
    Current price $279.95

    Astro-Tech 3.5mm 110° Field Waterproof 1.25"/2" Eyepiece

    Astro-Tech
    In Stock

    The Astro-Tech 3.5mm o-ring sealed 1.25"/2" eyepiece combines a high power capability with a 110° apparent field to provide a jaw-dropping observin...

    View full details
    Original price $279.95 - Original price $279.95
    Original price
    $279.95
    $279.95 - $279.95
    Current price $279.95

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