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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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    Astro-Tech 5mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
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    This Astro-Tech 5mm Paradigm Dual ED eyepiece is excellent for medium to medium high magnification viewing with short to medium focal length refrac...

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    $69.95
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    $69.95
    $69.95 - $69.95
    $69.95

    Astro-Tech 12mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 12mm Paradigm Dual ED medium power eyepiece has outstanding performance at a price that will make you wonder why other good quality...

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    $69.95
    $69.95 - $69.95
    $69.95

    Astro-Tech 8mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 8mm Paradigm Dual ED eyepiece is a logical choice for high quality/high magnification observing with long focal length refractors, ...

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

    Astro-Tech 25mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 25mm Paradigm Dual ED is an excellent medium to low power eyepiece for encompassing open clusters, picking up detail in emission an...

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    $69.95
    $69.95 - $69.95
    $69.95

    Astro-Tech 15mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 15mm Paradigm Dual ED eyepiece gives you the outstanding medium power performance of a high-priced eyepiece at a price that will ma...

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    $69.95
    $69.95 - $69.95
    $69.95

    Astro-Tech 18mm 1.25" Paradigm Dual ED Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 18mm Paradigm Dual ED is an excellent medium to medium low power eyepiece for lunar observing, encompassing globular clusters, pick...

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    $69.95
  • $40.00 - $40.00
    $40.00
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    $40.00

    Astro-Tech 10.5mm 1.25" PF Eyepiece

    Astro-Tech
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    This Astro-Tech 10.5mm PF series eyepiece has excellent eyerelief and a fantastic flat field to further enhance your viewing pleasure. This Astro-T...

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  • $40.00 - $40.00
    $40.00
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    $40.00

    Astro-Tech 5.5mm 1.25" PF Eyepiece

    Astro-Tech
    In Stock

    This Astro-Tech 5.5mm PF series eyepiece has excellent eyerelief and a fantastic flat field to further enhance your viewing pleasure. This Astro-Te...

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    $40.00
  • 25mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
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    $99.95

    Celestron 25mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This Celestron X-Cel LX 25mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. It is a good med...

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    $99.95
  • 5mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    Celestron 5mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    More on the way

    This Celestron X-Cel LX 5mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. It gives you good...

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    $99.95 - $99.95
    $99.95
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    $99.95
  • 9mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
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    $99.95

    Celestron 9mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This Celestron X-Cel LX 9mm eyepiece uses a new six-element fully-multicoated optical system to provide a wide 60° field of view. It's a good choic...

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    $99.95 - $99.95
    $99.95
  • 12mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    Celestron 12mm X-Cel LX Series 1.25" Eyepiece

    Celestron
    In Stock

    This medium focal length 12mm Celestron X-Cel LX Series six-element eyepiece is usable for high quality medium to medium high magnification observi...

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    $99.95
    $99.95 - $99.95
    $99.95
  • 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
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    $99.95
  • $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99

    Explore Scientific 30mm 52° Series Waterproof Eyepiece

    Explore Scientific
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    Explore Scientific 30mm 52° Series Argon-Purged Waterproof Eyepiece The Explore Scientific 30mm 52° Series eyepiece offers an exceptional balance o...

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    $149.99 - $149.99
    $149.99
    $149.99 - $149.99
    $149.99
  • $89.99 - $89.99
    $89.99
    $89.99 - $89.99
    $89.99

    Explore Scientific 4.5mm 52° Series Waterproof Eyepiece

    Explore Scientific
    In Stock

    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 - $89.99
    $89.99
  • 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
    More on the way

    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...

    View full details
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95
  • $119.99 - $119.99
    $119.99
    $119.99 - $119.99
    $119.99

    Explore Scientific 6.5mm 52° Series Waterproof Eyepiece

    Explore Scientific
    In Stock

    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
  • $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
  • $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
  • 2.3mm X-Cel LX Series 1.25"
    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95

    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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    $99.95 - $99.95
    $99.95
    $99.95 - $99.95
    $99.95
  • $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
  • $129.99 - $129.99
    $129.99
    $129.99 - $129.99
    $129.99

    Explore Scientific 25mm 52° Series Waterproof Eyepiece

    Explore Scientific
    More on the way

    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 - $129.99
    $129.99

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