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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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  • $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
  • 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
    More on the way

    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
  • 16mm 68° field argon-purged waterproof 1.25" eyepiece
    Save $50.05 Save $0.00
    $219.99
    $219.99 - $219.99
    $219.99
    $169.94
    $169.94 - $169.94
    $169.94

    Explore Scientific 16mm 68° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
    In Stock

    This Explore Scientific 16mm argon-purged eyepiece is a truly fine medium power eyepiece with a substantial 68° field of view that can provide a co...

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    $219.99
    $219.99 - $219.99
    $219.99
    $169.94
    $169.94 - $169.94
    $169.94
    Save $50.05 Save $0.00
  • 4.5mm 1.25" 72° field Delos
    $386.01 - $386.01
    $386.01
    $386.01 - $386.01
    $386.01

    TeleVue 4.5mm 1.25" 72° Field Delos Eyepiece

    TeleVue
    More on the way

    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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    $386.01 - $386.01
    $386.01
    $386.01 - $386.01
    $386.01
  • Explore Scientific 62° 9mm 1.25" Waterproof Eyepiece
    Save $40.05 Save $0.00
    $149.99
    $149.99 - $149.99
    $149.99
    $109.94
    $109.94 - $109.94
    $109.94

    Explore Scientific 9mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 62° Series™ eyepieces are excellent flat-field multi-elem...

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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
  • 14mm 1.25" 72° field Delos
    $386.01 - $386.01
    $386.01
    $386.01 - $386.01
    $386.01

    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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    $386.01 - $386.01
    $386.01
    $386.01 - $386.01
    $386.01
  • 7mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    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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    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95
  • 18mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    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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    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95
  • $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00

    TeleVue 3.5mm Nagler Type 6 Eyepiece

    TeleVue
    More on the way

    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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    $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00
  • $134.00 - $134.00
    $134.00
    $134.00 - $134.00
    $134.00

    TeleVue 3X Barlow for 1.25" Eyepieces

    TeleVue
    More on the way

    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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    $134.00 - $134.00
    $134.00
    $134.00 - $134.00
    $134.00
  • $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00

    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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    $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00
  • $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95

    Celestron 7mm 1.25" 82º Luminos Eyepiece

    Celestron
    In Stock

    This sharp 7mm Celestron Luminos eyepiece has a wide and flat 82° field of view for "picture window" views, even at very high powers . This excepti...

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    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95
  • $101.00 - $101.00
    $101.00
    $101.00 - $101.00
    $101.00

    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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    $101.00 - $101.00
    $101.00
    $101.00 - $101.00
    $101.00
  • $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00

    TeleVue 7mm Nagler Type 6 Eyepiece

    TeleVue
    More on the way

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

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    $335.00 - $335.00
    $335.00
    $335.00 - $335.00
    $335.00
  • $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95

    Astro-Tech 2X Telecentric Extender Barlow for 1.25" Eyepieces

    Astro-Tech
    In Stock

    This Astro-Tech 2x Telecentric Extender, ie a Barlow, is a great way to cleanly double the power of any 1.25" eyepiece in your collection . . . The...

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    $59.95 - $59.95
    $59.95
    $59.95 - $59.95
    $59.95
  • $119.99 - $119.99
    $119.99
    $119.99 - $119.99
    $119.99

    Explore Scientific 6.5mm 52° Series Waterproof Eyepiece

    Explore Scientific
    More on the way

    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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    $119.99 - $119.99
    $119.99
    $119.99 - $119.99
    $119.99
  • Explore Scientific 62° 20mm 1.25" Waterproof Eyepiece
    Save $40.05 Save $0.00
    $149.99
    $149.99 - $149.99
    $149.99
    $109.94
    $109.94 - $109.94
    $109.94

    Explore Scientific 62° 20mm 1.25" Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value.  Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore ...

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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
  • Explore Scientific 62° 5.5mm 1.25" Waterproof Eyepiece
    Save $40.05 Save $0.00
    $149.99
    $149.99 - $149.99
    $149.99
    $109.94
    $109.94 - $109.94
    $109.94

    Explore Scientific 5.5mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    In Stock

    The Explore Scientific 62° Series™ eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. Wi...

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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
  • Explore Scientific 62° 26mm 1.25" Waterproof Eyepiece
    Save $40.05 Save $0.00
    $179.99
    $179.99 - $179.99
    $179.99
    $139.94
    $139.94 - $139.94
    $139.94

    Explore Scientific 26mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 62° Series™ eyepieces are excellent flat-field multi-elem...

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    $179.99
    $179.99 - $179.99
    $179.99
    $139.94
    $139.94 - $139.94
    $139.94
    Save $40.05 Save $0.00
  • $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95

    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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    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95
  • $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95

    Celestron Omni 4mm 1.25" Plossl Eyepiece 93316

    Celestron
    More on the way

    This fully-multicoated Celestron eyepiece is one of the shortest focal length and most economically-priced Plössl eyepieces available. It's designe...

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    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95
  • Save $40.05 Save $0.00
    $119.99
    $119.99 - $119.99
    $119.99
    $79.94
    $79.94 - $79.94
    $79.94

    Explore Scientific 15mm 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...

    View full details
    $119.99
    $119.99 - $119.99
    $119.99
    $79.94
    $79.94 - $79.94
    $79.94
    Save $40.05 Save $0.00
  • $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95

    Celestron Omni 40mm 1.25" Plossl Eyepiece

    Celestron
    More on the way

    This is an economical good quality low power eyepiece with fully-multicoated optics. With a 43 degree field of view it has the widest field possibl...

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    $49.95 - $49.95
    $49.95
    $49.95 - $49.95
    $49.95
  • High hat adapter to use 1.25" eyepieces in 2" focusers, matte satin finish
    $68.00 - $68.00
    $68.00
    $68.00 - $68.00
    $68.00

    TeleVue High Hat Adapter to Use 1.25" Eyepieces in 2" Focusers, Matte Satin Finish

    TeleVue
    More on the way

    This high hat step-down adapter allows the use of 1.25" eyepieces in 2" focuser drawtubes and 2" star diagonals. The body of the adapter has a non-...

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    $68.00 - $68.00
    $68.00
    $68.00 - $68.00
    $68.00

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