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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. Lumicon - 1.25" Silver Series Eyepiece 40mm

    Lumicon - 1.25" Silver Series Eyepiece 40mm

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    Model#: LL2400

    Regular Price: $132.00

    Special Price: $71.95

  2. Lumicon - 1.25in Silver Series Eyepiece 32mm

    Lumicon - 1.25in Silver Series Eyepiece 32mm

    Focal length: 32mmBarrel diameter: 1 ... Learn More
    Model#: LL2320

    Regular Price: $121.00

    Special Price: $65.95

  3. Lumicon - 1.25" Silver Series Eyepiece 25mm

    Lumicon - 1.25" Silver Series Eyepiece 25mm

    Focal length: 25mm
    Barrel diameter: 1.25"
    Number of elements: 4
    Apparent Field of View: 50°

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    Model#: LL2250

    Regular Price: $90.00

    Special Price: $49.95

  4. Lumicon - 1.25" Silver Series Eyepiece 20mm

    Lumicon - 1.25" Silver Series Eyepiece 20mm

    Focal length: 20mm
    Barrel diameter: 1.25"
    Number of elements: 4
    Apparent Field of View: 50°

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    Model#: LL2200

    Regular Price: $90.00

    Special Price: $49.95

  5. Lumicon - 25mm Kellner Crosshair Eyepiece

    Lumicon - 25mm Kellner Crosshair Eyepiece

    The Lumicon 25mm Cross-Hair Eyepiece is a high-quality, Kellner-style single cross-hair eyepiece for use in Lumicon's 50mm and 80mm finderscopes. Fully-coated optics provide high contrast and flat field ... Learn More
    Model#: LG1085
    $76.95

  6. Lumicon - 1.25" Silver Series Eyepiece 6.3mm

    Lumicon - 1.25" Silver Series Eyepiece 6.3mm

    Focal length: 6.3mm
    Barrel diameter: 1.25"
    Number of elements: 4
    Apparent Field of View: 50°

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    Model#: LL2063

    Regular Price: $80.00

    Special Price: $44.95

  7. Lumicon - 1.25" Silver Series Eyepiece 7.5mm

    Lumicon - 1.25" Silver Series Eyepiece 7.5mm

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    Model#: LL2075

    Regular Price: $80.00

    Special Price: $44.95

  8. Lumicon - 1.25" Silver Series Eyepiece 10mm

    Lumicon - 1.25" Silver Series Eyepiece 10mm

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    Model#: LL2100

    Regular Price: $80.00

    Special Price: $49.95

  9. Lumicon - 1.25" Silver Series Eyepiece 12.5mm

    Lumicon - 1.25" Silver Series Eyepiece 12.5mm

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    Model#: LL2125

    Regular Price: $80.00

    Special Price: $49.95

  10. Lumicon - 1.25in Silver Series Eyepiece 17mm

    Lumicon - 1.25in Silver Series Eyepiece 17mm

    Focal length: 17mm
    Barrel diameter: 1.25"
    Number of elements: 4
    Apparent Field of View: 50°

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    Model#: LL2170

    Regular Price: $80.00

    Special Price: $49.95

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