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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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  • $290.00 - $290.00
    $290.00
    $290.00 - $290.00
    $290.00

    TeleVue 55mm Plössl Eyepiece

    TeleVue
    In Stock

    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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    $290.00 - $290.00
    $290.00
    $290.00 - $290.00
    $290.00
  • Save $80.99 Save $0.00
    $149.99
    $149.99 - $149.99
    $149.99
    $69.00
    $69.00 - $69.00
    $69.00

    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
    $69.00
    $69.00 - $69.00
    $69.00
    Save $80.99 Save $0.00
  • $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00

    Televue 3mm Delite 62º 1.25” Eyepiece EDE-03.0

    TeleVue
    In Stock

    The TeleVue 3mm 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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    $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00
  • 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
    Sold Out

    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
    $229.99
    $229.99 - $229.99
    $229.99
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  • 12mm 1.25" 72° field Delos
    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00

    TeleVue 12mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    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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    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00
  • $745.00 - $745.00
    $745.00
    $745.00 - $745.00
    $745.00

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

    TeleVue
    In Stock

    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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    $745.00 - $745.00
    $745.00
    $745.00 - $745.00
    $745.00
  • $745.00 - $745.00
    $745.00
    $745.00 - $745.00
    $745.00

    TeleVue 10mm 1.25"/2" 100° Field Ethos Eyepiece

    TeleVue
    In Stock

    The 10mm TeleVue Ethos is a "do-it-all" eyepiece that is perfect for all telescopes that can utilize this focal length. And, as it fills the hole b...

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    $745.00 - $745.00
    $745.00
    $745.00 - $745.00
    $745.00
  • $138.00 - $138.00
    $138.00
    $138.00 - $138.00
    $138.00

    TeleVue 20mm Plössl Eyepiece

    TeleVue
    More on the way

    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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    $138.00 - $138.00
    $138.00
    $138.00 - $138.00
    $138.00
  • 12mm X-Cel LX Series 1.25"
    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95

    Celestron 12mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This medium focal length 12mm Celestron X-Cel LX Series six-element eyepiece is usable for high quality medium to medium high magnification observi...

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    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95
  • 5mm XW extra wide angle eyepiece
    $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00

    Pentax 5mm XW Extra Wide Angle Eyepiece

    Pentax
    More on the way

    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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    $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00
  • 8mm 1.25" 72° field Delos
    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00

    TeleVue 8mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    In Stock

    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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    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00
  • $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00

    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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    $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00
  • Save $30.99 Save $0.00
    $89.99
    $89.99 - $89.99
    $89.99
    $59.00
    $59.00 - $59.00
    $59.00

    Explore Scientific 4.5mm 52° Series Waterproof Eyepiece

    Explore Scientific
    More on the way

    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
    $89.99 - $89.99
    $89.99
    $59.00
    $59.00 - $59.00
    $59.00
    Save $30.99 Save $0.00
  • Explore Scientific 62° 9mm 1.25" Waterproof Eyepiece
    Save $70.99 Save $0.00
    $149.99
    $149.99 - $149.99
    $149.99
    $79.00
    $79.00 - $79.00
    $79.00

    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
    $79.00
    $79.00 - $79.00
    $79.00
    Save $70.99 Save $0.00
  • $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00

    Pentax 20mm XW Extra Wide Angle Eyepiece

    Pentax
    More on the way

    This medium focal length Pentax provides sharp and very wide field images for both terrestrial and astronomical observing. Terrestrially, it is an ...

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    $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00
  • $124.95 - $124.95
    $124.95
    $124.95 - $124.95
    $124.95

    Celestron X-Cel LX 3X 3-Element Barlow For 1.25" Eyepieces 93428

    Celestron
    More on the way

    This three-power Celestron X-Cel LX 1.25" Barlow is an air-spaced three-lens fully multicoated Barlow that provides premium optical performance at ...

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    $124.95 - $124.95
    $124.95
    $124.95 - $124.95
    $124.95
  • $260.00 - $260.00
    $260.00
    $260.00 - $260.00
    $260.00

    TeleVue 5X Powermate Image Amplifier for 1.25" Eyepieces

    TeleVue
    In Stock

    If you must wear glasses while observing, and you're looking for an ultra high power Barlow to get high magnifications from your favorite long foca...

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    $260.00 - $260.00
    $260.00
    $260.00 - $260.00
    $260.00
  • 7mm X-Cel LX Series 1.25"
    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95

    Celestron 7mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This short focal length 7mm Celestron X-Cel LX Series six-element eyepiece is an economical choice for high quality/high magnification observing an...

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    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95
  • 14mm 1.25" 72° field Delos
    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00

    TeleVue 14mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    The 14mm TeleVue Delos puts the optical virtues of a TeleVue Ethos eyepiece - high contrast, a neutral color balance, and full field sharpness - in...

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    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00
  • Explore Scientific 62° 40mm 2" Waterproof Eyepiece
    Save $130.99 Save $0.00
    $289.99
    $289.99 - $289.99
    $289.99
    $159.00
    $159.00 - $159.00
    $159.00

    Explore Scientific 40mm 62° 2" Waterproof Eyepiece

    Explore Scientific
    More on the way

    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
    $159.00
    $159.00 - $159.00
    $159.00
    Save $130.99 Save $0.00
  • 40mm 68° field argon-purged waterproof 2" eyepiece
    Save $230.99 Save $0.00
    $519.99
    $519.99 - $519.99
    $519.99
    $289.00
    $289.00 - $289.00
    $289.00

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

    Explore Scientific
    More on the way

    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
    $289.00
    $289.00 - $289.00
    $289.00
    Save $230.99 Save $0.00
  • 5.5mm 100° field argon-purged waterproof 2" eyepiece
    Save $250.99 Save $0.00
    $549.99
    $549.99 - $549.99
    $549.99
    $299.00
    $299.00 - $299.00
    $299.00

    Explore Scientific 5.5mm 100° Field Waterproof 2" Eyepiece

    Explore Scientific
    More on the way

    The Explore Scientific 5.5mm argon-purged waterproof 2" eyepiece combines a high power capability with a 100° apparent field to provide a jaw-dropp...

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    $549.99
    $549.99 - $549.99
    $549.99
    $299.00
    $299.00 - $299.00
    $299.00
    Save $250.99 Save $0.00
  • $115.00 - $115.00
    $115.00
    $115.00 - $115.00
    $115.00

    TeleVue 11mm Plössl Eyepiece

    TeleVue
    In Stock

    This is a very good medium high to high power eyepiece (the power depends on the focal length of your scope) for resolving globular clusters, picki...

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    $115.00 - $115.00
    $115.00
    $115.00 - $115.00
    $115.00
  • $901.00 - $901.00
    $901.00
    $901.00 - $901.00
    $901.00

    TeleVue 17mm 2" 100° Field Ethos Eyepiece

    TeleVue
    In Stock

    The 17mm TeleVue Ethos 100° field eyepiece is designed for no-holds-barred medium power deep space use with telescopes having focal ratios down to ...

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    $901.00 - $901.00
    $901.00
    $901.00 - $901.00
    $901.00

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