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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 $122.00 - Original price $122.00
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    Current price $122.00

    TeleVue 25mm Plössl Eyepiece

    TeleVue
    More on the way

    This is a very good medium to low power (depending on the focal length of your telescope) eyepiece for lunar observing, viewing emission and reflec...

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    Original price $122.00 - Original price $122.00
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    $122.00
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    Current price $122.00
  • 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 10mm XW Extra Wide Angle Eyepiece

    Pentax
    More on the way

    This short focal length Pentax is a high power eyepiece usable for both terrestrial and astronomical observing. Terrestrially, it is superb for det...

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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
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  • Original price $229.99 - Original price $229.99
    Original price
    $229.99
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    Current price $229.99

    Explore Scientific 8.8mm 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 8.8mm 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 $349.01 - Original price $349.01
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    Current price $349.01

    TeleVue 4X Powermate Image Amplifier for 2" Eyepieces, with 1.25" Eyepiece Adapter

    TeleVue
    In Stock

    If you need a very high quality, very high power 4x Barlow for 2" eyepieces, look no further than this TeleVue Powermate. While not technically a B...

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    Original price $349.01 - Original price $349.01
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    Current price $349.01
  • Original price $268.01 - Original price $268.01
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    Current price $268.01

    Televue 9mm Delite 62° 1.25" Eyepiece

    TeleVue
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    The 9mm 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 $894.00 - Original price $894.00
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    $894.00
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    Current price $894.00

    TeleVue 21mm 2" 100° Field Ethos Eyepiece

    TeleVue
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    With a 21mm focal length, the field of this 100° apparent field Ethos eyepiece is nearly 64% larger in area than the 82° field of a "space-walking"...

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    Original price $894.00 - Original price $894.00
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    $894.00
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    Current price $894.00
  • 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 7mm XW Extra Wide Angle Eyepiece

    Pentax
    In Stock

    This wide field Pentax eyepiece is designed for high power observing of objects on the ground by day and in the skies at night. Terrestrially, it i...

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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
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  • Original price $229.99 - Original price $229.99
    Original price
    $229.99
    $229.99 - $229.99
    Current price $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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    Original price $229.99 - Original price $229.99
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    Current price $229.99
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  • Original price $617.01 - Original price $617.01
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    $617.01
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    Current price $617.01

    TeleVue 8mm 1.25"/2" 100° Field Ethos Eyepiece

    TeleVue
    More on the way

    The TeleVue 8mm Ethos eyepiece raises the bar for shorter focal length eyepieces. It expands the apparent field of view to an astonishing 100°, whi...

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    Original price $617.01 - Original price $617.01
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    Current price $617.01
  • 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 $499.99 - Original price $499.99
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    Current price $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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    Original price $499.99 - Original price $499.99
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    Current price $499.99
  • Original price $334.01 - Original price $334.01
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    $334.01
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    Current price $334.01

    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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    Original price $334.01 - Original price $334.01
    Original price
    $334.01
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    Current price $334.01
  • Original price $49.95 - Original price $49.95
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    $49.95
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    Current price $49.95

    Celestron Omni 32mm 1.25" Plossl Eyepiece 93323

    Celestron
    In Stock

    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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    Original price $49.95 - Original price $49.95
    Original price
    $49.95
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    Current price $49.95
  • Original price $99.95 - 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
    Original price
    $99.95
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    Current price $99.95
  • Original price $379.01 - Original price $379.01
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    $379.01
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    Current price $379.01

    TeleVue 27mm 2" Panoptic Eyepiece

    TeleVue
    More on the way

    An excellent premium-quality low power wide field 2" eyepiece for the serious deep space explorer. The 27mm Panoptic, for example, will give you a ...

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    Original price $379.01 - Original price $379.01
    Original price
    $379.01
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    Current price $379.01
  • Original price $219.99 - Original price $219.99
    Original price
    $219.99
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    Current price $219.99

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

    Explore Scientific
    More on the way

    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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    Original price $219.99 - Original price $219.99
    Original price
    $219.99
    $219.99 - $219.99
    Current price $219.99
  • Original price $368.01 - Original price $368.01
    Original price
    $368.01
    $368.01 - $368.01
    Current price $368.01

    TeleVue 16mm Nagler Type 5 Eyepiece

    TeleVue
    More on the way

    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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    Original price $368.01 - Original price $368.01
    Original price
    $368.01
    $368.01 - $368.01
    Current price $368.01
  • Original price $273.01 - Original price $273.01
    Original price
    $273.01
    $273.01 - $273.01
    Current price $273.01

    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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    Original price $273.01 - Original price $273.01
    Original price
    $273.01
    $273.01 - $273.01
    Current price $273.01
  • Original price $487.00 - Original price $487.00
    Original price
    $487.00
    $487.00 - $487.00
    Current price $487.00

    TeleVue 22mm 2" Nagler Type 4 Eyepiece

    TeleVue
    More on the way

    The TeleVue 2" 22mm Nagler Type 4 replaces the 20mm Nagler Type 2, considered by many to be the finest eyepiece ever made. How do you improve on a ...

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    Original price $487.00 - Original price $487.00
    Original price
    $487.00
    $487.00 - $487.00
    Current price $487.00
  • Original price $99.95 - Original price $99.95
    Original price
    $99.95
    $99.95 - $99.95
    Current price $99.95

    Celestron 9mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This Celestron X-Cel LX 9mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. It's a good choic...

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    Original price $99.95 - Original price $99.95
    Original price
    $99.95
    $99.95 - $99.95
    Current price $99.95
  • 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 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 $104.95 - Original price $104.95
    Original price
    $104.95
    $104.95 - $104.95
    Current price $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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    Original price $104.95 - Original price $104.95
    Original price
    $104.95
    $104.95 - $104.95
    Current price $104.95

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