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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. Meade - 5.5mm Plossl Series 5000 60° Eyepiece - 1.25"

    Meade - 5.5mm Plossl Series 5000 60° Eyepiece - 1.25"

    5.5mm series 5000 5-Element, has a large apparent field of view of 60 degree. Super fully muti coated with blackened edges, Rotating adjustable eyecups. 1.25" in diameter.

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    Model#: 07650

    Regular Price: $69.00

    Special Price: $49.99

  2. Vixen - 2x Barlow Lens T 31.7mm

    Vixen - 2x Barlow Lens T 31.7mm

    Vixen barlowed lens, great for planetary observing.

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    Model#: 3907
    $54.95

  3. Explore Scientific - Bresser 70° Series 20mm NON-WATERPROOF Eyepiece - 1.25"

    Explore Scientific - Bresser 70° Series 20mm NON-WATERPROOF Eyepiece - 1.25"

    This Explore Scientific 20mm 1.25" eyepiece offers a wide 70º apparent field of view for an amazingly low price! Five element design produces high-contrast images

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    Model#: EP7020-0B

    Regular Price: $90.99

    Special Price: $59.00

  4. TMB Optical - 58° 1.25" Eyepiece - 7mm

    DISCONTINUED: TMB Optical - 58° 1.25" Eyepiece - 7mm

    This is a discontinued item. We recommend the Olivon version as a replacement.

    This short focal length 7mm TMB Planetary II eyepiece is from TMB Optical, the company founded by noted apochromatic refractor designer Thomas M. Back to produce state-of-the-art premium optics.

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    Model#: TMBP07
  5. TMB Optical - 58° 1.25" Eyepiece - 5mm

    DISCONTINUED: TMB Optical - 58° 1.25" Eyepiece - 5mm

    This is a discontinued item. We recommend the Olivon version as a replacement.

    This short focal length 5mm TMB Planetary II eyepiece is from TMB Optical, the company founded by noted apochromatic refractor designer Thomas M. Back to produce state-of-the-art premium optics.

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    Model#: TMBP05
  6. TMB Optical - 58° 1.25" Eyepiece - 8mm

    DISCONTINUED: TMB Optical - 58° 1.25" Eyepiece - 8mm

    The 8mm TMB Planetary II has been optimized to show maximum contrast, detail, and definition with a wide variety of telescope types and focal ratios when viewing bright objects such as the Moon and planets.

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    Model#: TMBP08
  7. TMB Optical - 58° 1.25" Eyepiece - 6mm

    DISCONTINUED: TMB Optical - 58° 1.25" Eyepiece - 6mm

    This is a discontinued item. We recommend the Olivon version as a replacement.

    This short focal length 6mm TMB Planetary II eyepiece is from TMB Optical, the company founded by noted apochromatic refractor designer Thomas M. Back to produce state-of-the-art premium optics.

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    Model#: TMBP06
  8. TMB Optical - 58° 1.25" Eyepiece - 4mm

    DISCONTINUED: TMB Optical - 58° 1.25" Eyepiece - 4mm

    For Replacement please consider Vixen - 4mm NLV Lanthanum Eyepiece

    This 4mm TMB Planetary II eyepiece was designed to provide exceptional high power/comfortable eye relief observing with long focal length refractors, reflectors, or catadioptric scopes under average or better seeing conditions. It is optimized to view bright objects, both on and off axis, while showing maximum contrast, detail, and definition. It has very high light transmission, very high contrast, minimal lateral color, and minimal light scatter.

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    Model#: TMBP04
  9. Olivon - 58° 5mm Eyepiece - 1.25"

    Olivon - 58° 5mm Eyepiece - 1.25"

    • 58 Degree Field of View
    • 1.25" Format
    • Fully Multi-Coated
    • 5mm focal length
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    Model#: OLIV558-US
    $63.00

  10. Olivon - 58° 7mm Eyepiece - 1.25"

    Olivon - 58° 7mm Eyepiece - 1.25"

    • 58 Degree Field of View
    • 1.25" Format
    • Fully Multi-Coated
    • 7mm focal length
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    Model#: OLIV758-US
    $63.00

  11. Olivon - 58° 20mm Eyepiece - 1.25"

    Olivon - 58° 20mm Eyepiece - 1.25"

    • 58 Degree Field of View
    • 1.25" Format
    • Fully Multi-Coated
    • 20mm focal length
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    Model#: OLIV2058-US
    $63.00

  12. Olivon - 58° 4mm Eyepiece - 1.25"

    Olivon - 58° 4mm Eyepiece - 1.25"

    • 58 Degree Field of View
    • 1.25" Format
    • Fully Multi-Coated
    • 4mm focal length
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    Model#: OLIV458-US
    $63.00

  13. Olivon - 58° 6mm Eyepiece - 1.25"

    Olivon - 58° 6mm Eyepiece - 1.25"

    • 58 Degree Field of View
    • 1.25" Format
    • Fully Multi-Coated
    • 6mm focal length
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    Model#: OLIV658-US
    $63.00

  14. Olivon - 58° 15mm Eyepiece - 1.25"

    Olivon - 58° 15mm Eyepiece - 1.25"

    • 58 Degree Field of View
    • 1.25" Format
    • Fully Multi-Coated
    • 15mm focal length
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    Model#: OLIV1558-US
    $63.00

  15. Olivon - 58° 2.5mm Eyepiece - 1.25"

    Olivon - 58° 2.5mm Eyepiece - 1.25"

    • 58 Degree Field of View
    • 1.25" Format
    • Fully Multi-Coated
    • 2.5mm focal length
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    Model#: OL2.558-US
    $63.00

  16. Celestron - 2.3mm X-Cel Eyepiece - 1.25"

    Celestron - 2.3mm X-Cel Eyepiece - 1.25"

    The 2.3mm high power X-Cel eyepiece is a 6-element fully multi-coated optical design, the X-Cel utilizes extra low dispersion (ED) glass on its most highly curved surfaces, to minimize chromatic aberration that can hinder sharp planetary views. With a wide 55° apparent field of view, and a large 25mm clear aperture the X-Cel is one of the most comfortable eyepieces to use.

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    Model#: 93386
    $63.95

  17. Celestron - 18mm X-Cel Eyepiece - 1.25"

    Celestron - 18mm X-Cel Eyepiece - 1.25"

    Every X-Cel eyepiece is parfocal with each other, meaning little or no focusing is needed when changing from low to high power. The X-Cel comes with soft rubber eyecups and a durable plastic case. In addition, if you are an eyeglass wearer, you will enjoy the 20mm eye relief available on each of the X-Cel focal lengths.

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    Model#: 93391
    $63.95

  18. Celestron - 10mm X-Cel Eyepiece - 1.25"

    Celestron - 10mm X-Cel Eyepiece - 1.25"

    The 10mm high power X-Cel eyepiece is a 6-element fully multi-coated optical design, the X-Cel utilizes extra low dispersion (ED) glass on its most highly curved surfaces, to minimize chromatic aberration that can hinder sharp planetary views.

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    Model#: 93389
    $63.95

  19. Celestron - 5mm X-Cel Series Eyepiece - 1.25"

    Celestron - 5mm X-Cel Series Eyepiece - 1.25"

    The 5mm high power X-Cel eyepiece is a 6-element fully multi-coated optical design, the X-Cel utilizes extra low dispersion (ED) glass on its most highly curved surfaces, to minimize chromatic aberration that can hinder sharp planetary views. With a wide 55° apparent field of view, and a large 25mm clear aperture the X-Cel is one of the most comfortable eyepieces to use.

    ...
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    Model#: 93387
    $63.95

  20. Celestron - 25mm X-Cel Eyepiece - 1.25"

    Celestron - 25mm X-Cel Eyepiece - 1.25"

    The 25mm medium power X-Cel eyepiece is a 6-element fully multi-coated optical design, the X-Cel utilizes extra low dispersion (ED) glass on its most highly curved surfaces, to minimize chromatic aberration that can hinder sharp planetary views ... Learn More
    Model#: 93393
    $63.95

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