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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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  • $128.00 - $128.00
    $128.00
    $128.00 - $128.00
    $128.00

    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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    $128.00 - $128.00
    $128.00
    $128.00 - $128.00
    $128.00
  • $241.00 - $241.00
    $241.00
    $241.00 - $241.00
    $241.00

    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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    $241.00 - $241.00
    $241.00
    $241.00 - $241.00
    $241.00
  • Sold out
    $269.99
    $269.99 - $269.99
    $269.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 6.5mm 82 Degree 1.25" LER Waterproof Eyepiece

    Explore Scientific
    Sold Out

    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
    $149.99
    $149.99 - $149.99
    $149.99
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  • Sold out
    $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
    Sold Out

    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
    $49.99
    $49.99 - $49.99
    $49.99
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  • 8mm 1.25" 72° field Delos
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    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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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • Save $50.00 Save $0.00
    $299.00
    $299.00 - $299.00
    $299.00
    $249.00
    $249.00 - $249.00
    $249.00

    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
    $249.00
    $249.00 - $249.00
    $249.00
    Save $50.00 Save $0.00
  • $106.00 - $106.00
    $106.00
    $106.00 - $106.00
    $106.00

    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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    $106.00 - $106.00
    $106.00
    $106.00 - $106.00
    $106.00
  • $141.00 - $141.00
    $141.00
    $141.00 - $141.00
    $141.00

    TeleVue 3X Barlow for 1.25" Eyepieces

    TeleVue
    In Stock

    If you need a high quality, medium high power Barlow for 1.25" eyepieces, look no further than this TeleVue. It's a 2-lens achromatic design with s...

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    $141.00 - $141.00
    $141.00
    $141.00 - $141.00
    $141.00
  • 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
  • $106.00 - $106.00
    $106.00
    $106.00 - $106.00
    $106.00

    TeleVue 8mm 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 observing lunar and planetary deta...

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    $106.00 - $106.00
    $106.00
    $106.00 - $106.00
    $106.00
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 3.5mm Nagler Type 6 Eyepiece

    TeleVue
    In Stock

    This is an exceptional short focal length ultra wide field eyepiece. It uses seven optical elements for optimized performance across a very wide fi...

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    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 5mm Nagler Type 6 Eyepiece

    TeleVue
    In Stock

    This is an optically superb short focal length ultra wide field eyepiece designed as an upgrade to the famed original 4.8mm Nagler. Due to the sign...

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    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • Explore Scientific 62° 20mm 1.25" Waterproof Eyepiece
    Sold out
    $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
    Sold Out

    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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    $149.99
    $149.99 - $149.99
    $149.99
    $99.99
    $99.99 - $99.99
    $99.99
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  • Explore Scientific 62° 26mm 1.25" Waterproof Eyepiece
    Sold out
    $179.99
    $179.99 - $179.99
    $179.99
    $99.99
    $99.99 - $99.99
    $99.99

    Explore Scientific 26mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    Sold Out

    Explore Scientific 26mm 62° 1.25" Waterproof Eyepiece The Explore Scientific 26mm 62° Series Eyepiece offers a perfect balance of generous eye reli...

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    $179.99
    $179.99 - $179.99
    $179.99
    $99.99
    $99.99 - $99.99
    $99.99
    Sold out
  • 4.5mm 1.25" 72° field Delos
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 4.5mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    In Stock

    The 4.5mm TeleVue Delos combines high image quality and high power with a long 20mm eye relief that makes it ideal for eyeglass wearers. The majori...

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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • Sold out
    $129.99
    $129.99 - $129.99
    $129.99
    $49.99
    $49.99 - $49.99
    $49.99

    Explore Scientific 25mm 52° Series Waterproof Eyepiece

    Explore Scientific
    Sold Out

    Explore Scientific 25mm 52° Argon-Purged Eyepiece – Exceptional Optical Performance for Deep Sky and Solar System Observing When it comes to select...

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    $129.99
    $129.99 - $129.99
    $129.99
    $49.99
    $49.99 - $49.99
    $49.99
    Sold out
  • 14mm 1.25" 72° field Delos
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 14mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    In Stock

    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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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00
  • $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00

    TeleVue 7mm Nagler Type 6 Eyepiece

    TeleVue
    In Stock

    This is a superb short focal length ultra wide field eyepiece designed as an upgrade to the original and highly-prized 7mm Nagler. This 1.25" eyepi...

    View full details
    $354.00 - $354.00
    $354.00
    $354.00 - $354.00
    $354.00
  • Sold out
    $119.99
    $119.99 - $119.99
    $119.99
    $49.99
    $49.99 - $49.99
    $49.99

    Explore Scientific 15mm 52° Series Waterproof Eyepiece

    Explore Scientific
    Sold Out

    Explore Scientific 15mm 52° Argon-Purged Eyepiece For amateur and experienced astronomers alike, the Explore Scientific 15mm 52° Series Eyepiece is...

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    $119.99
    $119.99 - $119.99
    $119.99
    $49.99
    $49.99 - $49.99
    $49.99
    Sold out
  • $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95

    Celestron Omni 6mm 1.25" Plossl Eyepiece 93317

    Celestron
    In Stock

    This is a good quality fully-multicoated high power eyepiece at a good low price. It's designed for high magnification lunar and planetary observin...

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    $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95
  • $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95

    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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    $69.95 - $69.95
    $69.95
    $69.95 - $69.95
    $69.95
  • 18mm X-Cel LX Series 1.25"
    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95

    Celestron 18mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This Celestron X-Cel LX 18mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. This medium foca...

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    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95
  • 3X Barlow for 1.25" eyepieces
    $209.99 - $209.99
    $209.99
    $209.99 - $209.99
    $209.99

    Explore Scientific 3X Barlow for 1.25" eyepieces

    Explore Scientific
    In Stock

    This new four-element 1.25" 3x Explore Scientific focal extender (Barlow lens) triples the power of any eyepiece used with it, with flat-field and ...

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    $209.99 - $209.99
    $209.99
    $209.99 - $209.99
    $209.99
  • 3.5mm 1.25" 72° field Delos
    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

    TeleVue 3.5mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    In Stock

    The 3.5mm TeleVue Delos is designed to produce very high power/high contrast/high quality images with any telescope. It has a long 20mm eye relief ...

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    $407.00 - $407.00
    $407.00
    $407.00 - $407.00
    $407.00

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