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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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    Astro-Tech 5mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
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    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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    Astro-Tech 25mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
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    This Astro-Tech 25mm Paradigm Dual ED is an excellent medium to low power eyepiece for encompassing open clusters, picking up detail in emission an...

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    Astro-Tech 25mm 1.25" PF Eyepiece

    Astro-Tech
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    Looking to upgrade your standard 25/26mm eyepiece? Look no further than the Astro-Tech 25mm PF series eyepiece. So, I know someone will wonder what...

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  • 24mm 68° field argon-purged waterproof 1.25" eyepiece
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    $269.99
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    $99.99
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    Explore Scientific 24mm 68° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
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    This Explore Scientific 24mm argon-purged eyepiece has a wide 68° field that gives impressively sharp and contrasty medium power images with virtua...

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  • 11mm 82° field argon-purged waterproof 1.25" eyepiece
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    $229.99
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    $229.99
    $99.99
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    Explore Scientific 11mm 82° Field Argon-Purged Waterproof 1.25" Eyepiece

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

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

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

    Explore Scientific
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    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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    $199.99

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

    Explore Scientific
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    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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    $229.99
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    Explore Scientific 14mm 82° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
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    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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  • 20mm 68° field argon-purged waterproof 1.25" eyepiece
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    $219.99
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    $219.99
    $79.99
    $79.99 - $79.99
    $79.99

    Explore Scientific 20mm 68° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
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    This Explore Scientific 20mm argon-purged waterproof eyepiece is a fine medium power 1.25" eyepiece whose substantial 68° field of view gives you "...

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    $219.99
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    $199.99
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    $199.99

    Explore Scientific 20mm 100° field waterproof 2" eyepiece

    Explore Scientific
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    The 100° apparent field of the Explore Scientific 20mm waterproof 2" eyepiece provides superb maximum field/medium power observing in all scopes, f...

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  • 18mm 82° field argon-purged waterproof 2" eyepiece
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    $149.99
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    $149.99

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

    Explore Scientific
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    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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  • 12mm 92° field argon-purged waterproof 2" eyepiece
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    $299.99
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    Explore Scientific 12mm 92° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
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    This 2" 12mm 92° field Explore Scientific hyper-wide eyepiece provides an exceptionally immersive medium/medium high power observing experience. Yo...

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    $49.99

    Explore Scientific 3mm 52° Series Waterproof Eyepiece

    Explore Scientific
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    Explore Scientific 3mm 52° Series Argon-Purged Eyepiece If you're looking for an ultra-high magnification eyepiece to push your telescope to its li...

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    $89.99
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    $89.99
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  • 8.8mm 82° field argon-purged waterproof 1.25" eyepiece
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    $229.99 - $229.99
    $229.99
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    $229.99

    Explore Scientific 8.8mm 82° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
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    This Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale. This 8.8mm Explore Scientific 82° f...

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  • Explore Scientific 62° 5.5mm 1.25" Waterproof Eyepiece
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    $149.99
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    $99.99
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    $99.99

    Explore Scientific 5.5mm 62° 1.25" Waterproof Eyepiece

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

    Explore Scientific
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    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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    $119.99
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    $119.99
    $49.99
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    $49.99

    Explore Scientific 6.5mm 52° Series Waterproof Eyepiece

    Explore Scientific
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    Explore Scientific 6.5mm 52° Argon-Purged Waterproof Eyepiece A high-quality eyepiece is one of the best investments you can make in your telescope...

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  • 6.7mm 82° field argon-purged waterproof 1.25" eyepiece
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    $229.99 - $229.99
    $229.99
    $229.99 - $229.99
    $229.99

    Explore Scientific 6.7mm 82° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
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    This Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale. This high power 6.7mm Explore Scien...

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    $229.99 - $229.99
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  • 28mm 68° field argon-purged waterproof 2" eyepiece
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    $299.99
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    $299.99
    $179.99
    $179.99 - $179.99
    $179.99

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

    Explore Scientific
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    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
    $179.99
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  • Explore Scientific 62° 9mm 1.25" Waterproof Eyepiece
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    $149.99
    $149.99 - $149.99
    $149.99
    $99.99
    $99.99 - $99.99
    $99.99

    Explore Scientific 9mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
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    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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    $269.99
    $269.99 - $269.99
    $269.99
    $149.99
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    $149.99

    Explore Scientific 6.5mm 82 Degree 1.25" LER Waterproof Eyepiece

    Explore Scientific
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    Explore Scientific 6.5mm 82° 1.25" LER Eyepiece – A Premium Wide-Field Experience with Superior Comfort When it comes to high-performance eyepieces...

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    $269.99
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    $269.99
    $149.99
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    $149.99
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    $89.99
    $89.99 - $89.99
    $89.99
    $49.99
    $49.99 - $49.99
    $49.99

    Explore Scientific 4.5mm 52° Series Waterproof Eyepiece

    Explore Scientific
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    Explore Scientific 4.5mm 52° Series Argon-Purged Eyepiece Precision optics and comfortable viewing come together in the Explore Scientific 4.5mm 52...

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    $89.99
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    $89.99
    $49.99
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    $49.99
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  • Explore Scientific 62° 20mm 1.25" Waterproof Eyepiece
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    $149.99
    $149.99 - $149.99
    $149.99
    $99.99
    $99.99 - $99.99
    $99.99

    Explore Scientific 62° 20mm 1.25" Waterproof Eyepiece

    Explore Scientific
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    Explore Scientific 20mm 62° 1.25" Waterproof Eyepiece The Explore Scientific 20mm 62° Series Eyepiece offers an outstanding blend of comfort, optic...

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