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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
    $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
  • 7.2mm to 21.5mm zoom
    $238.00 - $238.00
    $238.00
    $238.00 - $238.00
    $238.00

    Lunt 7.2mm to 21.5mm zoom

    Lunt Solar Systems
    More on the way

    The 7.2mm to 21.5mm focal length range of this Lunt Solar zoom eyepiece has been chosen specifically to complement the focal lengths of the various...

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    $238.00 - $238.00
    $238.00
    $238.00 - $238.00
    $238.00
  • Kit of 2" eyepieces and visual accessories
    $0.00 - $0.00
    $0.00
    $419.95
    $419.95 - $419.95
    $419.95

    Celestron Kit of 2" Eyepieces and Visual Accessories 94305

    Celestron
    In Stock

    This kit consists of eleven Celestron 2" visual accessories that will get you started observing right with your new Celestron telescope - or any br...

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    $0.00 - $0.00
    $0.00
    $419.95
    $419.95 - $419.95
    $419.95
  • $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95

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

    Astro-Tech
    In Stock

    This 9mm to 27mm Astro-Tech zoom eyepiece is a fantastic choice for astronomers of every experience level. This Astro-Tech 9mm to 27mm zoom eyepiec...

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    $119.95 - $119.95
    $119.95
    $119.95 - $119.95
    $119.95
  • $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

    Explore Scientific 6.5mm 52° Argon-Purged Waterproof Eyepiece A high-quality eyepiece is one of the best investments you can make in your telescope...

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    $119.99 - $119.99
    $119.99
    $119.99 - $119.99
    $119.99
  • Explore Scientific 62° 20mm 1.25" Waterproof Eyepiece
    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 62° 20mm 1.25" Waterproof Eyepiece

    Explore Scientific
    More on the way

    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 - $149.99
    $149.99
  • Explore Scientific 62° 5.5mm 1.25" Waterproof Eyepiece
    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 5.5mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 5.5mm 62° Series 1.25" Waterproof Eyepiece If you’re looking to pull in crisp planetary detail, split tight double stars, or ta...

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    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99
  • Explore Scientific 62° 40mm 2" Waterproof Eyepiece
    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99

    Explore Scientific 40mm 62° 2" Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 40mm 62° 2" Waterproof Eyepiece The Explore Scientific 40mm 62° Series 2" Eyepiece is a superb choice for deep-sky observers and...

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    $289.99 - $289.99
    $289.99
    $289.99 - $289.99
    $289.99
  • $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
  • $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
  • $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
  • Explore Scientific 2-inch 3x focal extender with 1.25-inch adapter for telescope eyepieces
    Explore Scientific 2-inch 3x focal extender Barlow lens in black anodized aluminum housing
    $299.99 - $299.99
    $299.99
    $299.99 - $299.99
    $299.99

    Explore Scientific 2" 3x Focal Extender (Barlow)

    Explore Scientific
    More on the way

    The 2" 3x Explore Scientific premium Barlow (described by Explore Scientific as a focal extender, rather than a Barlow) uses an advanced four-eleme...

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    $299.99 - $299.99
    $299.99
    $299.99 - $299.99
    $299.99
  • High hat adapter to use 1.25" eyepieces in 2" focusers, matte satin finish
    $69.00 - $69.00
    $69.00
    $69.00 - $69.00
    $69.00

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

    TeleVue
    In Stock

    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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    $69.00 - $69.00
    $69.00
    $69.00 - $69.00
    $69.00
  • $239.95 - $239.95
    $239.95
    $239.95 - $239.95
    $239.95

    Astro-Tech 21mm UWA 82° 2" Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 21mm waterproof eyepiece is a substantial 2" eyepiece that will give impressively sharp and contrasty wide field views of nebulas, ...

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    $239.95 - $239.95
    $239.95
    $239.95 - $239.95
    $239.95
  • $89.99 - $89.99
    $89.99
    $89.99 - $89.99
    $89.99

    Explore Scientific 3mm 52° Series Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 3mm 52° Series Argon-Purged Eyepiece If you're looking for an ultra-high magnification eyepiece to push your telescope to its li...

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    $89.99 - $89.99
    $89.99
    $89.99 - $89.99
    $89.99
  • Explore Scientific 62° 26mm 1.25" Waterproof Eyepiece
    $179.99 - $179.99
    $179.99
    $179.99 - $179.99
    $179.99

    Explore Scientific 26mm 62° 1.25" Waterproof Eyepiece

    Explore Scientific
    More on the way

    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 - $179.99
    $179.99
  • 9mm 100° field argon-purged waterproof 2" eyepiece
    $579.99 - $579.99
    $579.99
    $579.99 - $579.99
    $579.99

    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 - $579.99
    $579.99
  • $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
  • $269.99 - $269.99
    $269.99
    $269.99 - $269.99
    $269.99

    Explore Scientific 6.5mm 82 Degree 1.25" LER Waterproof Eyepiece

    Explore Scientific
    In Stock

    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 - $269.99
    $269.99
  • $179.99 - $179.99
    $179.99
    $179.99 - $179.99
    $179.99

    Explore Scientific 40mm 52° Series Waterproof Eyepiece

    Explore Scientific
    In Stock

    Explore Scientific 40mm 52° Eyepiece – Ultra-Comfortable Viewing with Exceptional Contrast If you’re looking for an eyepiece that delivers generous...

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    $179.99 - $179.99
    $179.99
    $179.99 - $179.99
    $179.99
  • $119.99 - $119.99
    $119.99
    $119.99 - $119.99
    $119.99

    Explore Scientific 15mm 52° Series Waterproof Eyepiece

    Explore Scientific
    In Stock

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

    Explore Scientific 10mm 52° Series Waterproof Eyepiece

    Explore Scientific
    More on the way

    Explore Scientific 10mm 52° Series Argon-Purged Eyepiece For astronomers who value precision, contrast, and durability in a compact form, the Explo...

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    $119.99 - $119.99
    $119.99
    $119.99 - $119.99
    $119.99
  • 34mm 68° field argon-purged waterproof 2" eyepiece
    Save $160.00 Save $0.00
    $419.99
    $419.99 - $419.99
    $419.99
    $259.99
    $259.99 - $259.99
    $259.99

    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
    $259.99
    $259.99 - $259.99
    $259.99
    Save $160.00 Save $0.00

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