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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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  • Original price $342.01 - Original price $342.01
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    $342.01
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    Current price $342.01

    TeleVue 2X Powermate Image Amplifier for 2" Eyepieces, with 1.25" Eyepiece Adapter

    TeleVue
    In Stock

    If you need a very high quality 2x Barlow for 2" eyepieces, look no further than this TeleVue Powermate. While not technically a Barlow, this uniqu...

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    Original price $342.01 - Original price $342.01
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    $342.01
    $342.01 - $342.01
    Current price $342.01
  • Original price $119.95 - Original price $119.95
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    Current price $119.95

    Celestron X-Cel LX 2X 3-Element Barlow for 1.25" Eyepieces 93529

    Celestron
    In Stock

    This 2x Celestron X-Cel LX three-lens air-spaced fully multicoated 1.25" Barlow performs a lot more expensively than it costs . . .This Celestron X...

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    Original price $119.95 - Original price $119.95
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    Current price $119.95
  • Original price $39.95 - Original price $39.95
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    Current price $39.95

    Celestron 2X Omni Barlow for 1.25" Eyepieces

    Celestron
    In Stock

    This is a good quality 1.25" 2x two-element fully multicoated Barlow. Its relatively short 3" length allows use in star diagonals. A thumbscrew hol...

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    Original price $39.95 - Original price $39.95
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    $39.95 - $39.95
    Current price $39.95
  • Original price $134.00 - Original price $134.00
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    Current price $134.00

    TeleVue 2X Barlow for 1.25" Eyepieces

    TeleVue
    More on the way

    This 2-element Barlow has superb sharpness to match that of TeleVue eyepieces. Despite being "merely" an achromatic system, good design gives it be...

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    Original price $134.00 - Original price $134.00
    Original price
    $134.00
    $134.00 - $134.00
    Current price $134.00
  • Original price $199.99 - Original price $199.99
    Original price
    $199.99
    $199.99 - $199.99
    Current price $199.99

    Explore Scientific 2X Barlow for 1.25" eyepieces

    Explore Scientific
    In Stock

    This four-element 1.25" 2x Explore Scientific focal extender (Barlow lens) has an exceptionally flat field and essentially no color fringing with a...

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    Original price $199.99 - Original price $199.99
    Original price
    $199.99
    $199.99 - $199.99
    Current price $199.99
  • Original price $67.95 - Original price $67.95
    Original price
    $67.95
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    Current price $67.95

    Celestron 2X Barlow for 1.25" Eyepieces (Includes T-Adapter)

    Celestron
    In Stock

    This 1.25" 2x achromatic Barlow lens can be used visually, but the eyepiece holder portion also has integral T-threads so it can be used as a T-ada...

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    Original price $67.95 - Original price $67.95
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    Current price $67.95
  • Original price $299.99 - Original price $299.99
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    Current price $299.99

    Explore Scientific 2X Barlow for 2" eyepieces, with 1.25" adapter

    Explore Scientific
    In Stock

    This new four-element 2" 2x Explore Scientific focal extender (Barlow lens) has a 1.25" eyepiece adapter so you can use both 2" and 1.25" eyepieces...

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    Original price $299.99 - Original price $299.99
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    $299.99 - $299.99
    Current price $299.99
  • Original price $228.01 - Original price $228.01
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    Current price $228.01

    TeleVue 2X Big Barlow for 2" Eyepieces, with 1.25" Eyepiece Adapter

    TeleVue
    In Stock

    This 2" 2x Clamp Ring Big Barlow can be used with any telescope using a 2" focuser. As it is only 4.5" long, it can also be used in most 2" star di...

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    Original price $228.01 - Original price $228.01
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    Current price $228.01
  • Original price $59.95 - Original price $59.95
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    Current price $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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    Original price $59.95 - Original price $59.95
    Original price
    $59.95
    $59.95 - $59.95
    Current price $59.95

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