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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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  • 3.5mm 1.25" 72° field Delos
    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00

    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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    $438.00 - $438.00
    $438.00
    $438.00 - $438.00
    $438.00
  • High hat adapter to use 1.25" eyepieces in 2" focusers, matte satin finish
    $78.00 - $78.00
    $78.00
    $78.00 - $78.00
    $78.00

    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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    $78.00 - $78.00
    $78.00
    $78.00 - $78.00
    $78.00
  • $52.95 - $52.95
    $52.95
    $52.95 - $52.95
    $52.95

    Celestron Omni 40mm 1.25" Plossl Eyepiece

    Celestron
    In Stock

    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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    $52.95 - $52.95
    $52.95
    $52.95 - $52.95
    $52.95
  • $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95

    Celestron Omni 4mm 1.25" Plossl Eyepiece 93316

    Celestron
    More on the way

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

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    $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95
  • $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95

    Celestron 7mm 1.25" 82º Luminos Eyepiece

    Celestron
    More on the way

    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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    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95
  • 5X Barlow for 1.25" eyepieces
    Save $90.00 Save $0.00
    $199.99
    $199.99 - $199.99
    $199.99
    $109.99
    $109.99 - $109.99
    $109.99

    Explore Scientific 5X Barlow for 1.25" eyepieces

    Explore Scientific
    More on the way

    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
    $109.99
    $109.99 - $109.99
    $109.99
    Save $90.00 Save $0.00
  • Save $60.99 Save $0.00
    $119.99
    $119.99 - $119.99
    $119.99
    $59.00
    $59.00 - $59.00
    $59.00

    Explore Scientific 20mm 52° Series Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 20mm 52° Series Eyepiece – Wide-Field Views with Exceptional Clarity If you're looking for an eyepiece that delivers a balance o...

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    $119.99
    $119.99 - $119.99
    $119.99
    $59.00
    $59.00 - $59.00
    $59.00
    Save $60.99 Save $0.00
  • Explore Scientific 62° 14mm 1.25" Waterproof Eyepiece
    Save $70.99 Save $0.00
    $149.99
    $149.99 - $149.99
    $149.99
    $79.00
    $79.00 - $79.00
    $79.00

    Explore Scientific 62° 14mm 1.25" Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 14mm 62° Series 1.25" Waterproof Eyepiece The Explore Scientific 14mm 62° Series eyepiece is an excellent choice for amateur and...

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    $149.99
    $149.99 - $149.99
    $149.99
    $79.00
    $79.00 - $79.00
    $79.00
    Save $70.99 Save $0.00
  • $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95

    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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    $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95
  • 2.3mm X-Cel LX Series 1.25"
    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95

    Celestron 2.3mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This very short focal length Celestron X-Cel LX 2.3mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field ...

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    $109.95 - $109.95
    $109.95
    $109.95 - $109.95
    $109.95
  • $299.00 - $299.00
    $299.00
    $299.00 - $299.00
    $299.00

    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 - $299.00
    $299.00
  • 15mm 1.25" 82° Luminos
    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95

    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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    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95
  • 10mm 1.25" 82° Luminos
    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95

    Celestron 10mm 1.25" 82° Luminos Eyepiece

    Celestron
    More on the way

    This exceptional Celestron 10mm Luminos ultra wide field 1.25" eyepiece uses seven optical elements for optimized performance across a very wide an...

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    $139.95 - $139.95
    $139.95
    $139.95 - $139.95
    $139.95
  • 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
  • Save $130.99 Save $0.00
    $269.99
    $269.99 - $269.99
    $269.99
    $139.00
    $139.00 - $139.00
    $139.00

    Explore Scientific 4.5mm 82 Degree 1.25" LER Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 4.5mm 82° 1.25" LER Eyepiece For astronomers looking to push their telescope to the limits of magnification while maintaining a ...

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

    Celestron Omni 12mm 1.25" Plossl Eyepiece 93319

    Celestron
    In Stock

    This Celestron Omni is a good quality medium power eyepiece at a good low price. It's designed for detailed lunar observing, for getting up close a...

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    $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95
  • Save $130.99 Save $0.00
    $269.99
    $269.99 - $269.99
    $269.99
    $139.00
    $139.00 - $139.00
    $139.00

    Explore Scientific 8.5mm LER 82° Field Argon-Purged Waterproof 1.25" Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 8.5mm 82° 1.25" LER Eyepiece – Wide-Field Precision Meets Premium Comfort The Explore Scientific 8.5mm 82° 1.25" Long Eye Relief...

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

    Celestron Omni 9mm 1.25" Plossl Eyepiece 93318

    Celestron
    More on the way

    This fully-multicoated Plössl is a good quality medium high to high power eyepiece at a sensibly low price. It's designed for high magnification lu...

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    $31.95 - $31.95
    $31.95
    $31.95 - $31.95
    $31.95
  • 12mm Brandon "flat top"
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 12mm Brandon "Flat Top" Eyepiece

    Vernonscope
    More on the way

    The 12mm Vernonscope Brandon "flat top" eyepiece is designed for high power use with any telescope type, at focal ratios f/7 and above. It provides...

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • Sky Rover UF 24 mm Ultra Flat Field Eyepiece with 65° wide field, long eye relief, and 1.25" barrel
    Sky Rover UF 24 mm Ultra Flat Field Eyepiece with 65° wide field, long eye relief, and 1.25" barrel
    $189.00 - $189.00
    $189.00
    $189.00 - $189.00
    $189.00

    Sky Rover UF 24 mm Ultra Flat Field Eyepiece – 65° Wide Field, 1.25" Barrel

    Sky Rover
    In Stock

    Sky Rover UF 24 mm Ultra Flat Field Eyepiece Designed for Edge-to-Edge Clarity The Sky Rover UF 24 mm Ultra Flat Field Eyepiece brings premium opti...

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    $189.00 - $189.00
    $189.00
    $189.00 - $189.00
    $189.00
  • Celestron Ultima Edge 24mm 1.25-inch eyepiece with 70-degree apparent field of view
    $259.95 - $259.95
    $259.95
    $259.95 - $259.95
    $259.95

    Celestron Ultima Edge 24mm 1.25" Eyepiece 93453

    Celestron
    In Stock

    Celestron Ultima Edge 24mm 1.25" Eyepiece – Flat Field Precision with Comfortable Eye Relief If you’re searching for a premium wide-angle eyepiece ...

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    $259.95 - $259.95
    $259.95
    $259.95 - $259.95
    $259.95
  • 32mm Brandon "flat top"
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 32mm Brandon "Flat Top" Eyepiece

    Vernonscope
    More on the way

    The 32mm Vernonscope Brandon "flat top" eyepiece is designed for nigh-perfect low power deep sky observing with any telescope type, at focal ratios...

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • 24mm Brandon "flat top"
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 24mm Brandon "Flat Top" Eyepiece

    Vernonscope
    More on the way

    The 24mm Vernonscope Brandon "flat top" eyepiece is designed for nigh-perfect medium power deep sky observing with any telescope type, at focal rat...

    View full details
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • 8mm Brandon "flat top"
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 8mm Brandon Flat Top Eyepiece

    Vernonscope
    More on the way

    The 8mm Vernonscope Brandon "flat top" eyepiece is designed for high power use with any telescope type, at focal ratios f/7 and above. It provides ...

    View full details
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

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