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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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  • 16mm Brandon "flat top"
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 16mm Brandon "Flat Top" Eyepiece

    Vernonscope
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    The 16mm Vernonscope Brandon "flat top" eyepiece is designed for medium power high contrast/dark sky background use with any telescope type, at foc...

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • 8mm Brandon
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 8mm Brandon Eyepiece

    Vernonscope
    More on the way

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

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • 32mm Brandon
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 32mm Brandon Eyepiece

    Vernonscope
    More on the way

    The 32mm Vernonscope Brandon eyepiece is designed for nigh-perfect low power deep sky observing with any telescope type, at focal ratios f/7 and ab...

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • 24mm Brandon
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 24mm Brandon Eyepiece

    Vernonscope
    More on the way

    The 24mm Vernonscope Brandon eyepiece is designed for nigh-perfect medium power deep sky observing with any telescope type, at focal ratios f/7 and...

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • 12mm Brandon
    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Vernonscope 12mm Brandon Eyepiece

    Vernonscope
    More on the way

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

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    $279.00 - $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00

    Sky Rover XWA 7mm 100° Ultra Wide Angle Eyepiece

    Sky Rover
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    The 7mm is where high-power observing starts to become practical. It’s the focal length most observers reach for when they want real detail without...

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    $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00
  • 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
    Save $28.35 Save $0.00
    $189.00
    $189.00 - $189.00
    $189.00
    $160.65
    $160.65 - $160.65
    $160.65

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

    Sky Rover
    In Stock

    Bright fields and comfortable eye positioning. That's all most observers ask for at low power. The 24mm focal length is where eyepieces finally get...

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    $189.00
    $189.00 - $189.00
    $189.00
    $160.65
    $160.65 - $160.65
    $160.65
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  • Save $6.00 Save $0.00
    $40.00
    $40.00 - $40.00
    $40.00
    $34.00
    $34.00 - $34.00
    $34.00

    Sky Rover 5.5mm Premium Flat Field Eyepiece NEAF DEMO

    Sky Rover
    In Stock

    High-power eyepieces used to mean a choice: pay for premium glass, or squint through a design that sacrifices edge quality for a low price. The Sky...

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    $40.00
    $40.00 - $40.00
    $40.00
    $34.00
    $34.00 - $34.00
    $34.00
    Save $6.00 Save $0.00
  • $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00

    Sky Rover XWA 13mm 100° Ultra Wide Angle Eyepiece | Astronomics

    Sky Rover
    More on the way

    Coming Soon

    $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00
  • $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00

    Sky Rover 5.5mm Premium Flat Field Eyepiece

    Sky Rover
    More on the way

    High-power eyepieces used to mean a choice: pay for premium glass, or squint through a design that sacrifices edge quality for a low price. The Sky...

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    $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00
  • $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00

    Sky Rover XWA 9mm 100° Ultra Wide Angle Eyepiece | Astronomics

    Sky Rover
    More on the way

    Deep-sky observing at 100x magnification is where most observers find their rhythm. High enough to show galaxy structure and nebular detail, low en...

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    $269.00 - $269.00
    $269.00
    $269.00 - $269.00
    $269.00
  • $109.00 - $109.00
    $109.00
    $109.00 - $109.00
    $109.00

    Sky Rover 18mm 65° Ultra Flat Field Eyepiece

    Sky Rover
    More on the way

    The telescope's job is to gather light and converge it. The eyepiece's job is to put it where you can see it without the field falling apart. At 18...

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    $109.00 - $109.00
    $109.00
    $109.00 - $109.00
    $109.00
  • 3.50 Diopter Dioptrx astigmatism-correcting lens
    $155.00 - $155.00
    $155.00
    $155.00 - $155.00
    $155.00

    TeleVue 3.50 Diopter Dioptrx Astigmatism-Correcting Lens

    TeleVue
    In Stock

    This Dioptrx accessory lens corrects for an astigmatism of 3.50 diopters. (This would be a "CYL" value of 3.50 in your eyeglass prescription.)  The...

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    $155.00 - $155.00
    $155.00
    $155.00 - $155.00
    $155.00
  • Celestron Ultima Edge 30mm 2-inch eyepiece with 70-degree apparent field of view
    $299.95 - $299.95
    $299.95
    $299.95 - $299.95
    $299.95

    Celestron Ultima Edge 30mm 2" Eyepiece 93454

    Celestron
    In Stock

    Celestron Ultima Edge 30mm 2" Eyepiece – Flat Field, Wide View, Premium Optics If you're looking for a wide-field eyepiece that delivers pinpoint s...

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    $299.95 - $299.95
    $299.95
    $299.95 - $299.95
    $299.95
  • Celestron Ultima Edge 18mm 1.25-inch eyepiece with 70-degree apparent field of view
    $169.95 - $169.95
    $169.95
    $169.95 - $169.95
    $169.95

    Celestron Ultima Edge 18mm 1.25" Eyepiece 93452

    Celestron
    In Stock

    Celestron Ultima Edge 18mm 1.25" Eyepiece If you're looking for an eyepiece that delivers flat-field performance without breaking the bank, the Cel...

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    $169.95 - $169.95
    $169.95
    $169.95 - $169.95
    $169.95
  • Celestron Observer’s Accessory Kit open case with eyepieces and filters
    $159.95 - $159.95
    $159.95
    $159.95 - $159.95
    $159.95

    Celestron 1.25" Observers Accessory Kit

    Celestron
    In Stock

    Celestron 1.25" Observer’s Accessory Kit (#94308) If you’re just starting out with a telescope or looking to upgrade your basic accessories, the Ce...

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    $159.95 - $159.95
    $159.95
    $159.95 - $159.95
    $159.95
  • $45.00 - $45.00
    $45.00
    $45.00 - $45.00
    $45.00

    Tele Vue Eyeguard Extender

    TeleVue
    More on the way

     Concept: Many Tele Vue eyepieces, such as DeLite, Delos, Nagler type 4, 55 Plössl, 41 Panoptic have adjustable height eyeguards to permit comforta...

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    $45.00 - $45.00
    $45.00
    $45.00 - $45.00
    $45.00
  • 8-24mm SMC 1.25" long eye relief astronomical zoom; 21-63x or 26-78x spotting scope zoom
    $359.00 - $359.00
    $359.00
    $359.00 - $359.00
    $359.00

    Pentax 8-24mm SMC 1.25" Long Eye Relief Astronomical Zoom; 21-63x or 26-78x Spotting Scope Zoom

    Pentax
    More on the way

    This is an ultra-premium six-element zoom eyepiece. It has a long eye relief that's particularly well-suited to those who must wear eyeglasses whil...

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    $359.00 - $359.00
    $359.00
    $359.00 - $359.00
    $359.00
  • 23mm 2" 82° Luminos
    $249.95 - $249.95
    $249.95
    $249.95 - $249.95
    $249.95

    Celestron 23mm 2" 82° Luminos Eyepiece

    Celestron
    In Stock

    This 2" Celestron Luminos 23mm eyepiece is a six-lens design with a very wide 82° field and minimal field curvature. This makes it particularly wel...

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    $249.95 - $249.95
    $249.95
    $249.95 - $249.95
    $249.95
  • Save $40.35 Save $0.00
    $269.00
    $269.00 - $269.00
    $269.00
    $228.65
    $228.65 - $228.65
    $228.65

    Sky Rover XWA 3.5mm 110° Ultra Wide Angle Eyepiece NEAF DEMO

    Sky Rover
    In Stock

    A 3.5mm eyepiece is a specialist. It's the one you reach for when the atmosphere goes still — when stars stop shimmering, when planetary detail sna...

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    $269.00
    $269.00 - $269.00
    $269.00
    $228.65
    $228.65 - $228.65
    $228.65
    Save $40.35 Save $0.00
  • Save $16.35 Save $0.00
    $109.00
    $109.00 - $109.00
    $109.00
    $92.65
    $92.65 - $92.65
    $92.65

    Sky Rover 15mm 65° Ultra Flat Field Eyepiece NEAF DEMO

    Sky Rover
    In Stock

    The 15mm focal length is where observing divides into two worlds: low enough to give you genuine context and field of view, high enough to show rea...

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    $109.00
    $109.00 - $109.00
    $109.00
    $92.65
    $92.65 - $92.65
    $92.65
    Save $16.35 Save $0.00
  • Save $16.35 Save $0.00
    $109.00
    $109.00 - $109.00
    $109.00
    $92.65
    $92.65 - $92.65
    $92.65

    Sky Rover 10mm 60° Ultra Flat Field Eyepiece NEAF DEMO

    Sky Rover
    In Stock

    Fast focal ratio scopes demand eyepieces that can flatten the field without complexity. Most designs start to start to show edge softness from a co...

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    $109.00
    $109.00 - $109.00
    $109.00
    $92.65
    $92.65 - $92.65
    $92.65
    Save $16.35 Save $0.00
  • $289.00 - $289.00
    $289.00
    $289.00 - $289.00
    $289.00

    Sky Rover XWA 20mm 100° Ultra Wide Angle Eyepiece

    Sky Rover
    More on the way

    There’s a point in observing where the sky stops feeling like a collection of objects and starts feeling like a place. Star clouds connect. Nebulae...

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    $289.00 - $289.00
    $289.00
    $289.00 - $289.00
    $289.00
  • $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00

    Sky Rover 3.5mm Premium Flat Field Eyepiece

    Sky Rover
    More on the way

    Planetary observing has always meant compromise: the magnification you need to resolve Jupiter's festoons and Saturn's polar flattening comes with ...

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    $40.00 - $40.00
    $40.00
    $40.00 - $40.00
    $40.00

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