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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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  • $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
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  • 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
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  • Explore Scientific 62° 26mm 1.25" Waterproof Eyepiece
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    $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
  • 40mm 68° field argon-purged waterproof 2" eyepiece
    Save $120.05 Save $0.00
    $519.99
    $519.99 - $519.99
    $519.99
    $399.94
    $399.94 - $399.94
    $399.94

    Explore Scientific 40mm 68° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    If you have room in your observing kit for only one long focal length wide angle eyepiece, this Explore Scientific 40mm argon-purged eyepiece may w...

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    $519.99
    $519.99 - $519.99
    $519.99
    $399.94
    $399.94 - $399.94
    $399.94
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  • 9mm 100° field argon-purged waterproof 2" eyepiece
    Save $100.05 Save $0.00
    $579.99
    $579.99 - $579.99
    $579.99
    $479.94
    $479.94 - $479.94
    $479.94

    Explore Scientific 9mm 100° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    The Explore Scientific 9mm argon-purged waterproof 2" eyepiece combines a high power capability with a 100° apparent field to provide a jaw-droppin...

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    $579.99
    $579.99 - $579.99
    $579.99
    $479.94
    $479.94 - $479.94
    $479.94
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  • $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...

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    $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
  • 5X Barlow for 1.25" eyepieces
    $199.99 - $199.99
    $199.99
    $199.99 - $199.99
    $199.99

    Explore Scientific 5X Barlow for 1.25" eyepieces

    Explore Scientific
    In Stock

    For high power with a short focal length refractor or reflector, this Explore Scientific four-element 5x image amplifier (Barlow lens) is hard to b...

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    $199.99 - $199.99
    $199.99
    $199.99 - $199.99
    $199.99
  • Save $30.00 Save $0.00
    $299.00
    $299.00 - $299.00
    $299.00
    $269.00
    $269.00 - $269.00
    $269.00

    Pentax 14mm XW Extra Wide Angle Eyepiece

    Pentax
    In Stock

    This medium focal length Pentax is a dual-purpose eyepiece for both terrestrial and astronomical observing. Terrestrially, it is an excellent moder...

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

    Explore Scientific 40mm 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
    $179.99
    $179.99 - $179.99
    $179.99
    $139.94
    $139.94 - $139.94
    $139.94
    Save $40.05 Save $0.00
  • Explore Scientific 62° 32mm 2" Waterproof Eyepiece
    Save $50.05 Save $0.00
    $229.99
    $229.99 - $229.99
    $229.99
    $179.94
    $179.94 - $179.94
    $179.94

    Explore Scientific 32mm 62° 2" Waterproof Eyepiece

    Explore Scientific
    In Stock

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

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    $229.99
    $229.99 - $229.99
    $229.99
    $179.94
    $179.94 - $179.94
    $179.94
    Save $50.05 Save $0.00
  • 34mm 68° field argon-purged waterproof 2" eyepiece
    Save $120.05 Save $0.00
    $419.99
    $419.99 - $419.99
    $419.99
    $299.94
    $299.94 - $299.94
    $299.94

    Explore Scientific 34mm 68° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    This Explore Scientific 34mm argon-purged 2" is a big eyepiece - big in size, big in weight, big in field of view, big in performance. It gives you...

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    $419.99
    $419.99 - $419.99
    $419.99
    $299.94
    $299.94 - $299.94
    $299.94
    Save $120.05 Save $0.00
  • 3.5mm 1.25" 72° field Delos
    $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00

    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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    $387.00 - $387.00
    $387.00
    $387.00 - $387.00
    $387.00
  • Save $100.05 Save $0.00
    $999.99
    $999.99 - $999.99
    $999.99
    $899.94
    $899.94 - $899.94
    $899.94

    Explore Scientific 25mm 100° Field Argon-Purged Waterproof 2" Eyepiece

    Explore Scientific
    In Stock

    The 100° apparent field of this Explore Scientific first-of-its-kind 25mm argon-purged waterproof 2" eyepiece provides superb maximum field/medium ...

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    $999.99
    $999.99 - $999.99
    $999.99
    $899.94
    $899.94 - $899.94
    $899.94
    Save $100.05 Save $0.00
  • $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95

    Celestron Omni 15mm 1.25" Plossl Eyepiece 93320

    Celestron
    More on the way

     This is a good quality medium power fully-multicoated eyepiece at a very economical price for the astronomer on a budget. It's designed for lunar ...

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    $29.95 - $29.95
    $29.95
    $29.95 - $29.95
    $29.95
  • 15mm 1.25" 82° Luminos
    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95

    Celestron 15mm 1.25" 82° Luminos Eyepiece

    Celestron
    More on the way

    This exceptional Celestron 15mm Luminos 1.25" eyepiece uses seven optical elements for optimized performance across a very wide and flat 82° field ...

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    $129.95 - $129.95
    $129.95
    $129.95 - $129.95
    $129.95
  • 2.4X Dakin Barlow for 1.25" eyepieces
    $210.00 - $210.00
    $210.00
    $210.00 - $210.00
    $210.00

    Vernonscope Ralph Dakin 2.4X Dakin Barlow for 1.25" Eyepieces

    Vernonscope
    More on the way

    This Ralph Dakin doublet design is considered by many professional astronomers to be the Rolls-Royce of 1.25" Barlows. It has a magnification of 2....

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    $210.00 - $210.00
    $210.00
    $210.00 - $210.00
    $210.00

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