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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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  • $618.00 - $618.00
    $618.00
    $618.00 - $618.00
    $618.00

    TeleVue 6mm 1.25"/2" 100° Field Ethos Eyepiece

    TeleVue
    In Stock

    Just like the 8mm TeleVue Ethos before it, the TeleVue 6mm Ethos eyepiece once again raises the bar for shorter focal length eyepieces. It expands ...

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    $618.00 - $618.00
    $618.00
    $618.00 - $618.00
    $618.00
  • 12mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    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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    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95
  • 2X Barlow for 1.25" eyepieces
    $199.99 - $199.99
    $199.99
    $199.99 - $199.99
    $199.99

    Explore Scientific 2X Barlow for 1.25" eyepieces

    Explore Scientific
    In Stock

    This four-element 1.25" 2x Explore Scientific focal extender (Barlow lens) has an exceptionally flat field and essentially no color fringing with a...

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    $199.99 - $199.99
    $199.99
    $199.99 - $199.99
    $199.99
  • 12mm 1.25" 72° field Delos
    $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00

    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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    $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00
  • $428.00 - $428.00
    $428.00
    $428.00 - $428.00
    $428.00

    TeleVue 35mm 2" Panoptic Eyepiece

    TeleVue
    In Stock

    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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    $428.00 - $428.00
    $428.00
    $428.00 - $428.00
    $428.00
  • Save $30.00 Save $0.00
    $299.00
    $299.00 - $299.00
    $299.00
    $269.00
    $269.00 - $269.00
    $269.00

    Pentax 20mm XW Extra Wide Angle Eyepiece

    Pentax
    In Stock

    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
    $269.00
    $269.00 - $269.00
    $269.00
    Save $30.00 Save $0.00
  • $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00

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

    TeleVue
    More on the way

    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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    $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00
  • $268.01 - $268.01
    $268.01
    $268.01 - $268.01
    $268.01

    Televue 13mm Delite 62º 1.25” Eyepiece EDE-13.0

    TeleVue
    In Stock

    The TeleVue 13mm 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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    $268.01 - $268.01
    $268.01
    $268.01 - $268.01
    $268.01
  • $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00

    TeleVue 15mm Delite 62º 1.25” Eyepiece

    TeleVue
    More on the way

    The 15mm 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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    $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00
  • 18mm 82° field argon-purged waterproof 2" eyepiece
    Save $100.05 Save $0.00
    $319.99
    $319.99 - $319.99
    $319.99
    $219.94
    $219.94 - $219.94
    $219.94

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

    Explore Scientific
    In Stock

    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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    $319.99
    $319.99 - $319.99
    $319.99
    $219.94
    $219.94 - $219.94
    $219.94
    Save $100.05 Save $0.00
  • $657.01 - $657.01
    $657.01
    $657.01 - $657.01
    $657.01

    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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    $657.01 - $657.01
    $657.01
    $657.01 - $657.01
    $657.01
  • $229.00 - $229.00
    $229.00
    $229.00 - $229.00
    $229.00

    TeleVue 5X Powermate Image Amplifier for 1.25" Eyepieces

    TeleVue
    More on the way

    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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    $229.00 - $229.00
    $229.00
    $229.00 - $229.00
    $229.00
  • 8mm 1.25" 72° field Delos
    $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00

    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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    $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00
  • $439.99 - $439.99
    $439.99
    $439.99 - $439.99
    $439.99

    Explore Scientific 24mm 82° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    More on the way

    This 82° field Explore Scientific 24mm 2" argon-purged waterproof eyepiece makes observing feel like you're relaxing in front of a picture window o...

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    $439.99 - $439.99
    $439.99
    $439.99 - $439.99
    $439.99
  • 28mm 68° field argon-purged waterproof 2" eyepiece
    Save $50.05 Save $0.00
    $299.99
    $299.99 - $299.99
    $299.99
    $249.94
    $249.94 - $249.94
    $249.94

    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
    $249.94
    $249.94 - $249.94
    $249.94
    Save $50.05 Save $0.00
  • $121.01 - $121.01
    $121.01
    $121.01 - $121.01
    $121.01

    TeleVue 20mm Plössl Eyepiece

    TeleVue
    In Stock

    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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    $121.01 - $121.01
    $121.01
    $121.01 - $121.01
    $121.01
  • $256.00 - $256.00
    $256.00
    $256.00 - $256.00
    $256.00

    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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    $256.00 - $256.00
    $256.00
    $256.00 - $256.00
    $256.00
  • $101.00 - $101.00
    $101.00
    $101.00 - $101.00
    $101.00

    TeleVue 15mm Plössl Eyepiece

    TeleVue
    In Stock

    This is a very good medium power eyepiece for lunar observing, resolving globular clusters, picking up detail in the more compact emission and refl...

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    $101.00 - $101.00
    $101.00
    $101.00 - $101.00
    $101.00
  • $657.01 - $657.01
    $657.01
    $657.01 - $657.01
    $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
    $657.01 - $657.01
    $657.01
    $657.01 - $657.01
    $657.01
  • Save $40.05 Save $0.00
    $149.99
    $149.99 - $149.99
    $149.99
    $109.94
    $109.94 - $109.94
    $109.94

    Explore Scientific 30mm 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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    $149.99
    $149.99 - $149.99
    $149.99
    $109.94
    $109.94 - $109.94
    $109.94
    Save $40.05 Save $0.00
  • Save $20.05 Save $0.00
    $89.99
    $89.99 - $89.99
    $89.99
    $69.94
    $69.94 - $69.94
    $69.94

    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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    $89.99
    $89.99 - $89.99
    $89.99
    $69.94
    $69.94 - $69.94
    $69.94
    Save $20.05 Save $0.00
  • $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00

    TeleVue 17.3mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    The 17.3mm TeleVue Delos is a "do-it-all" eyepiece designed for medium power/high contrast solar system and deep space observing with all telescope...

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    $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00
  • $100.01 - $100.01
    $100.01
    $100.01 - $100.01
    $100.01

    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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    $100.01 - $100.01
    $100.01
    $100.01 - $100.01
    $100.01
  • $67.95 - $67.95
    $67.95
    $67.95 - $67.95
    $67.95

    Celestron 2X Barlow for 1.25" Eyepieces (Includes T-Adapter)

    Celestron
    More on the way

    This 1.25" 2x achromatic Barlow lens can be used visually, but the eyepiece holder portion also has integral T-threads so it can be used as a T-ada...

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    $67.95 - $67.95
    $67.95
    $67.95 - $67.95
    $67.95

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