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Eyepieces

The specifications of a telescope are NOT the only specs that matter. The other half of the equation is the specifications of the eyepiece. Telescope eyepieces are made in different models and sizes to accommodate different observing methods and celestial objects. For example, understanding the focal length of your optical tube divided by the focal length of your eyepiece will result in magnification, which in return can tell you whether it is more suitable for deep space low surface brightness observation or planetary/terrestrial high surface brightness observation. For example, if you wanted to observe an object such as the Andromeda Galaxy with a large apparent diameter, an eyepiece with a long focal length and large apparent field of view would excel over an eyepiece with a shorter focal length and small apparent field of view because it would be able to accommodate the size of the object at low magnification and high FOV while not getting dimmer images as you would with short focal lengths. If you plan on observing planets, a short focal length eyepiece with a small FOV will result in high magnification to observe details on the surface (eg. Great Red Spot). You'll get a dimmer image, but since planets are already bright as it is, this won't be an issue. - Note: Almost all eyepieces come in 2" or 1.25" barrel size forms.

 


Telescope Focal Length

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  1. Celestron - Nexstar 6mm & 13mm Plossl Eyepiece Pair 1.25"

    Celestron - Nexstar 6mm & 13mm Plossl Eyepiece Pair 1.25"

    In a recent Sky & Telescope review, Celestron's Plössl eyepieces were rated as top ranking, and found to outperform many similar, but more expensive eyepieces. An exceptional value! Performance rivals the LV eyepieces.

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    Model#: 93308_93311
    $79.90

  2. Celestron - Nexstar 6mm Plossl Eyepiece - 1.25"

    Celestron - Nexstar 6mm Plossl Eyepiece - 1.25"

    Celestron Nexstar Plossl Eyepiece, 6mm, 1 ... Learn More
    Model#: 93308
    $19.95

  3. Coronado - 12mm,18mm,25mm Eyepiece and 2x Barlow and Travel Case

    Coronado - 12mm,18mm,25mm Eyepiece and 2x Barlow and Travel Case

     Coronado Cemax Eyepiece Set, 12mm, 18mm, 25mm, Barlow; 1.25"Coronado CEMAX Eyepiece set -  4 specialty eyepieces for use with Coronado H-alpha Solar Telescopes and filters. Complete set of three 1.25" diameter eyepieces with 2X Barlow ... Learn More
    Model#: CEP

    Regular Price: $389.00

    Special Price: $279.00

  4. Coronado - 18mm and 25mm CE Eyepiece Kit

    Coronado - 18mm and 25mm CE Eyepiece Kit

    Coronado takes enormous care to optimize contrast by minimizing the number of components and designing them so that they do not result in creating residual reflections and spurious light near the image. ... Learn More
    Model#: CE18_CE25

    Regular Price: $258.00

    Special Price: $139.99

  5. Coronado - Cemax 12mm Eyepiece

    Coronado - Cemax 12mm Eyepiece

    Coronado Cemax 12mm Eyepiece, 1.25"Coronado CEMAX 12mm Eyepiece (1.25")- for use with Coronado H-alpha Solar Telescopes and filters ... Learn More
    Model#: CE12

    Regular Price: $129.00

    Special Price: $79.99

  6. Coronado - Cemax 18mm Eyepiece

    Coronado - Cemax 18mm Eyepiece

    Coronado Cemax 18mm Eyepiece, 1.25"Coronado CEMAX 18mm Eyepiece (1.25")- for use with Coronado H-alpha Solar Telescopes and filters ... Learn More
    Model#: CE18

    Regular Price: $129.00

    Special Price: $79.95

  7. Coronado - Cemax 25mm Eyepiece

    Coronado - Cemax 25mm Eyepiece

    Coronado Cemax 25mm Eyepiece, 1.25"Coronado CEMAX 25mm Eyepiece (1.25")- for use with Coronado H-alpha Solar Telescopes and filters ... Learn More
    Model#: CE25

    Regular Price: $129.00

    Special Price: $79.00

  8. Denkmeier - D14 Eyepiece

    Denkmeier - D14 Eyepiece

    Specifications: Available Focal Lengths: 14mm 1 ... Learn More
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    (48 States)
    Model#: EPS-D14
    $329.00

  9. Denkmeier - D14 Eyepiece Pair

    Denkmeier - D14 Eyepiece Pair

    Specifications: Available Focal Lengths: 14mm 1 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EPP-D14
    $629.00

  10. Denkmeier - D21 Eyepiece

    Denkmeier - D21 Eyepiece

    Specifications: Available Focal Lengths: 21mm 1 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EPS-D21
    $289.00

  11. Denkmeier - D21 Eyepiece Pair

    Denkmeier - D21 Eyepiece Pair

    Specifications: Available Focal Lengths: 21mm 1 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EPP-D21
    $549.00

  12. Explore Scientific -  14mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D.

    Explore Scientific - 14mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D.

    The Explore Scientific 14mm 100 degree Eyepiece has been getting lots of thumbs up from seasoned amateur astronomers and now you can have one of your very own for a great price! The eyepiece is waterproof and nitrogen-purged, and it comes with a replaceable soft, folding eyecup.

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    FREE SHIPPING
    (48 States)
    Model#: EP10014-00
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $499.99

    Special Price: $299.99

  13. Explore Scientific -  20mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D.

    Explore Scientific - 20mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D.

    20mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EP10020-00
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $499.99

    Special Price: $299.99

  14. Explore Scientific -  9mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D.

    Explore Scientific - 9mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D.

    9mm 100° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EP1009-01
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $529.99

    Special Price: $249.99

  15. Explore Scientific - 100° Series 9mm and 14mm Nitrogen Purged Waterproof Eyepieces

    Explore Scientific - 100° Series 9mm and 14mm Nitrogen Purged Waterproof Eyepieces

    Specifications   Focal Length: 9mm and 14mm AFOV: 100 degrees Nitrogen-Purged and Waterproof: Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fine particulates and fungus, and to ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: EPWP1009-00_EPWP10014-00
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $948.95

    Special Price: $635.00

  16. Explore Scientific - 100° Series 9mm and 20mm Nitrogen Purged Waterproof Eyepieces

    Explore Scientific - 100° Series 9mm and 20mm Nitrogen Purged Waterproof Eyepieces

    Nitrogen-Purged and Waterproof: Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fine particulates and fungus, and to maximize the li

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    FREE SHIPPING
    (48 States)
    Model#: EP1009-00_EP10020-00
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $1,049.95

    Special Price: $535.00

  17. Explore Scientific - 100° Series 9mm, 14mm and 20mm Nitrogen Purged Waterproof Eyepieces

    Explore Scientific - 100° Series 9mm, 14mm and 20mm Nitrogen Purged Waterproof Eyepieces

    All 100° Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast.

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    FREE SHIPPING
    (48 States)
    Model#: EP1009-00_EP10014-00_EP10020-00
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $1,599.95

    Special Price: $835.00

  18. Explore Scientific - 100° Series 9mm, 14mm, 20mm, and 25mm Nitrogen Purged Waterproof Eyepieces

    Explore Scientific - 100° Series 9mm, 14mm, 20mm, and 25mm Nitrogen Purged Waterproof Eyepieces

    This eyepiece set from Explore Scientific includes the 9mm,14mm, 20mm, and 25mm Waterproof Eyepieces of 100°.

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    FREE SHIPPING
    (48 States)
    Model#: EP100_9_14_20_25
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $2,949.95

    Special Price: $1,399.95

  19. Explore Scientific - 100° Waterproof Eyepieces (9mm, 14mm, 20mm, 25mm)

    Explore Scientific - 100° Waterproof Eyepieces (9mm, 14mm, 20mm, 25mm)

    These 100° series eyepieces from explore scientific come in 9mm, 14mm, 20mm, and 25mm focal lengths in a 2" eyepiece barrel size. Explore Scientific designes these eyepieces with refractive glass and are nitrogen purged and inspected multipe times prior to shipment to ensure these eyepieces are sufficient.

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    Model#: 100 Degree Series Eyepieces

    Starting at: $299.99

  20. Explore Scientific - 14mm 82° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 1.25-inch O.D.

    Explore Scientific - 14mm 82° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 1.25-inch O.D.

    14mm 82° Series Nitrogen-Purged Waterproof Eyepiece; Fully Multi-Coated; 2-inch O.D. ... Learn More
    Model#: EPWP8214-00
    Take advantage of this incredible 2013 Spring Promotion Program

    Regular Price: $169.99

    Special Price: $99.99

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