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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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  • 13mm 1.25"/2" 100° field Ethos
    $745.00 - $745.00
    $745.00
    $745.00 - $745.00
    $745.00

    TeleVue 13mm 1.25"/2" 100° Field Ethos

    TeleVue
    In Stock

    The 100° apparent field of this new TeleVue 13mm Ethos eyepiece provides a field area more than 50% larger than the "space-walking" 82° field of a ...

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    $745.00 - $745.00
    $745.00
    $745.00 - $745.00
    $745.00
  • $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00

    Televue 5mm Delite 62° 1.25" Eyepiece

    TeleVue
    More on the way

    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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    $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00
  • TeleVue 11mm DeLite™ 62° 1.25" eyepiece
    $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00

    Televue 11mm Delite 62° 1.25" Eyepiece

    TeleVue
    More on the way

    The TeleVue 11mm 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
  • 18mm 82° field argon-purged waterproof 2" eyepiece
    Save $150.99 Save $0.00
    $319.99
    $319.99 - $319.99
    $319.99
    $169.00
    $169.00 - $169.00
    $169.00

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

    Explore Scientific
    More on the way

    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
    $169.00
    $169.00 - $169.00
    $169.00
    Save $150.99 Save $0.00
  • $124.95 - $124.95
    $124.95
    $124.95 - $124.95
    $124.95

    Celestron X-Cel LX 2X 3-Element Barlow for 1.25" Eyepieces 93529

    Celestron
    In Stock

    This 2x Celestron X-Cel LX three-lens air-spaced fully multicoated 1.25" Barlow performs a lot more expensively than it costs. This Celestron X-Cel...

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    $124.95 - $124.95
    $124.95
    $124.95 - $124.95
    $124.95
  • $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00

    Televue 7mm Delite 62° 1.25" Eyepiece

    TeleVue
    More on the way

    The 7mm 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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    $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00
  • $138.00 - $138.00
    $138.00
    $138.00 - $138.00
    $138.00

    TeleVue 25mm Plössl Eyepiece

    TeleVue
    In Stock

    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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    $138.00 - $138.00
    $138.00
    $138.00 - $138.00
    $138.00
  • $381.00 - $381.00
    $381.00
    $381.00 - $381.00
    $381.00

    TeleVue 9mm Nagler Type 6 Eyepiece

    TeleVue
    More on the way

    Tele Vue 9mm Nagler Type 6 Eyepiece — High Magnification Without the Tunnel Vision The Tele Vue 9mm Nagler Type 6 is an exceptional short focal len...

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    $381.00 - $381.00
    $381.00
    $381.00 - $381.00
    $381.00
  • $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00

    Televue 9mm Delite 62° 1.25" Eyepiece

    TeleVue
    In Stock

    The 9mm TeleVue DeLite eyepiece is a lighter, more compact, less expensive, 62° field/20mm eye relief version of the famed TeleVue Delos eyepieces,...

    View full details
    $305.00 - $305.00
    $305.00
    $305.00 - $305.00
    $305.00
  • 20mm 68° field argon-purged waterproof 1.25" eyepiece
    Save $110.99 Save $0.00
    $219.99
    $219.99 - $219.99
    $219.99
    $109.00
    $109.00 - $109.00
    $109.00

    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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    $219.99
    $219.99 - $219.99
    $219.99
    $109.00
    $109.00 - $109.00
    $109.00
    Save $110.99 Save $0.00
  • $1,012.00 - $1,012.00
    $1,012.00
    $1,012.00 - $1,012.00
    $1,012.00

    TeleVue 21mm 2" 100° Field Ethos Eyepiece

    TeleVue
    More on the way

    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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    $1,012.00 - $1,012.00
    $1,012.00
    $1,012.00 - $1,012.00
    $1,012.00
  • $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00

    TeleVue 6mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    The 6mm TeleVue Delos is designed for no-holds-barred high power/high contrast solar system and deep space observing with any telescope. It has a l...

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    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00
  • $700.00 - $700.00
    $700.00
    $700.00 - $700.00
    $700.00

    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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    $700.00 - $700.00
    $700.00
    $700.00 - $700.00
    $700.00
  • Save $30.00 Save $0.00
    $119.95
    $119.95 - $119.95
    $119.95
    $89.95
    $89.95 - $89.95
    $89.95

    Astro-Tech 9mm to 27mm 1.25" Zoom Eyepiece

    Astro-Tech
    In Stock

    You're at the eyepiece, Jupiter is centered, and you want to push the magnification higher. Normally that means pulling out the eyepiece, fumbling ...

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    $119.95
    $119.95 - $119.95
    $119.95
    $89.95
    $89.95 - $89.95
    $89.95
    Save $30.00 Save $0.00
  • $159.95 - $159.95
    $159.95
    $159.95 - $159.95
    $159.95

    Celestron Luminos 2.5X 4-Element Barlow For 2" And 1.25" Eyepieces 93436

    Celestron
    In Stock

    This 2.5x magnification Celestron Luminos 2" Barlow uses a four-lens fully multicoated optical system to provide a flat field and apochromatic-qual...

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    $159.95 - $159.95
    $159.95
    $159.95 - $159.95
    $159.95
  • $431.00 - $431.00
    $431.00
    $431.00 - $431.00
    $431.00

    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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    $431.00 - $431.00
    $431.00
    $431.00 - $431.00
    $431.00
  • $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00

    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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    $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00
  • Save $130.99 Save $0.00
    $269.99
    $269.99 - $269.99
    $269.99
    $139.00
    $139.00 - $139.00
    $139.00

    Explore Scientific 6.5mm 82 Degree 1.25" LER Waterproof Eyepiece

    Explore Scientific
    More on the way

    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
    $269.99 - $269.99
    $269.99
    $139.00
    $139.00 - $139.00
    $139.00
    Save $130.99 Save $0.00
  • Save $300.99 Save $0.00
    $799.99
    $799.99 - $799.99
    $799.99
    $499.00
    $499.00 - $499.00
    $499.00

    Explore Scientific 20mm 100° field waterproof 2" eyepiece

    Explore Scientific
    More on the way

    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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    $799.99
    $799.99 - $799.99
    $799.99
    $499.00
    $499.00 - $499.00
    $499.00
    Save $300.99 Save $0.00
  • 17mm 92° field argon-purged waterproof 2" eyepiece
    Save $500.99 Save $0.00
    $799.99
    $799.99 - $799.99
    $799.99
    $299.00
    $299.00 - $299.00
    $299.00

    Explore Scientific 17mm 92° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    More on the way

    You may be startled at the amazingly wide expanse of inky black sky that greets you when you first look into the 92° field of this Explore Scientif...

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    $799.99
    $799.99 - $799.99
    $799.99
    $299.00
    $299.00 - $299.00
    $299.00
    Save $500.99 Save $0.00
  • Tele Vue 16mm Nagler Type 5 eyepiece
    $418.00 - $418.00
    $418.00
    $418.00 - $418.00
    $418.00

    TeleVue 16mm Nagler Type 5 Eyepiece

    TeleVue
    In Stock

    Tele Vue 16mm Nagler Type 5 Eyepiece — The Goldilocks Wide-Field Performer There are eyepieces that impress on paper, and there are eyepieces that ...

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    $418.00 - $418.00
    $418.00
    $418.00 - $418.00
    $418.00
  • $396.00 - $396.00
    $396.00
    $396.00 - $396.00
    $396.00

    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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    $396.00 - $396.00
    $396.00
    $396.00 - $396.00
    $396.00
  • $52.95 - $52.95
    $52.95
    $52.95 - $52.95
    $52.95

    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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    $52.95 - $52.95
    $52.95
    $52.95 - $52.95
    $52.95
  • $312.00 - $312.00
    $312.00
    $312.00 - $312.00
    $312.00

    TeleVue 19mm Panoptic Eyepiece

    TeleVue
    In Stock

    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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    $312.00 - $312.00
    $312.00
    $312.00 - $312.00
    $312.00

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