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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. 8mm Delos Eyepiece by TeleVue

    TeleVue - 8mm 72° Delos Eyepiece

    This TeleVue Delos Eyepiece has a 8mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

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    (48 States)
    Model#: EDL-08.0
    10% off!

    Regular Price: $345.00

    Special Price: $310.50

  2. 4.5mm Delos Eyepiece by TeleVue

    TeleVue - 4.5mm 72° Delos Eyepiece

    This Tele Vue Delos Eyepiece has a 4.5mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

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    Model#: EDL-04.5
    10% off!

    Regular Price: $345.00

    Special Price: $310.50

  3. Opticstar - 1.25" 9mm Advanced Wireless Illuminated Reticule

    Opticstar - 1.25" 9mm Advanced Wireless Illuminated Reticule

    This high quality 9mm Plossl Illuminated Reticule Eyepiece is ideal for use for guiding and aligning the telescope mount via the ‘drifting’ method that ensures accurate alignment.

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    Model#: OSRGEP09

    Regular Price: $120.00

    Special Price: $114.00

  4. Opticstar - 6mm Wireless Illuminated Reticule

    Opticstar - 6mm Wireless Illuminated Reticule

    Advanced illuminated reticule eyepiece, both Plossl 6mm and 12mm models include micrometric x-y positioning controls that greatly facilitate locking onto the guide star by turning the threaded controls and placing the reticule's cross-line pattern precisely at the desired point in the field of view.

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    Model#: OSRGEP06
    $90.00

  5. Meade - 9mm Series 5000 Xtreme Wide Angle 100° Eyepiece - 2"

    Meade - 9mm Series 5000 Xtreme Wide Angle 100° Eyepiece - 2"

    Meade Series 5000 Xtreme Wide Angle 9mm Eyepiece (2") #07750 features a staggering 100 degree apparent field of view

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    Model#: 07750

    Regular Price: $299.00

    Special Price: $225.00

  6. Meade -  14mm Series 5000 Xtreme Wide Angle 100° Eyepiece - 2"

    Meade - 14mm Series 5000 Xtreme Wide Angle 100° Eyepiece - 2"

    Meade Series 5000 Xtreme Wide Angle 14mm Eyepiece (2") #07751 features a staggering 100 degree apparent field of view

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    Model#: 07751
    $345.00

  7. Meade - 20mm Series 5000 Xtreme Wide Angle 100° Eyepiece - 2"

    Meade - 20mm Series 5000 Xtreme Wide Angle 100° Eyepiece - 2"

    Meade Series 5000 Xtreme Wide Angle 20mm Eyepiece (2") #07752 features a staggering 100 degree apparent field of view

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    Model#: 07752
    $395.00

  8. Orion 12.5mm Illuminated Reticle Plossl Eyepiece

    Orion - 12.5mm Illuminated Reticle Plossl Eyepiece

    A 4-element Plossl design with fully multi-coated lenses ensures bright views through the illuminated reticle eyepiece. Its 40° apparent field is ideal for multiple functions.

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    Model#: 08450
    Sale lasts until Feb 12, 2015!

    Regular Price: $79.99

    Special Price: $71.49

  9. Explore Scientific - 68° Argon-Purged Waterproof Eyepieces - sizes: 16mm, 20mm, 24mm, 28mm, 34mm, 40mm
  10. Olivon - 12.5mm Plossl Illuminated Cordless Eyepiece

    Olivon - 12.5mm Plossl Illuminated Cordless Eyepiece

    Olivon 12.5mm Plossl Illuminated Cordless Eyepiece. For guiding, higher precision GOTO alignments and collimation.

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    Model#: OLRET12.5-US
    $78.00

  11. 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

  12. Vixen Eyepiece Or-12.5mm w/Illuminated Reticle (31.7mm)

    Vixen - Eyepiece Or-12.5mm w/Illuminated Reticle (31.7mm)

    Vixen eyepiece w/Illuminated Reticle at 31.7mm.

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    Model#: 3660
    $249.00

  13. Vixen - Eyepiece LV8-24mm (1.25")

    Vixen - Eyepiece LV8-24mm (1.25")

    Vixen eyepiece 1.25" LV8-24mm.

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    Model#: 3777
    $199.00

  14. 3.5mm Delos Eyepiece by TeleVue

    TeleVue - 3.5mm 72° Delos Eyepiece

    This Tele Vue Delos Eyepiece has a 3.5mm focal length and is presented in a 1.25" format. Continuously adjustable height eyeguard system that can be locked in any position

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    (48 States)
    Model#: EDL-03.5
    10% off!

    Regular Price: $345.00

    Special Price: $310.50

  15. Lunt 8mm solar eyepiece

    Lunt - 8mm Solar Eyepiece

    Lunt 8mm eyepiece; great for solar observing!

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    Model#: LS8E

    Regular Price: $119.00

    Special Price: $89.00

  16. Lunt 12mm Solar Eyepiece

    Lunt - 12mm Solar Eyepiece

    Lunt 12mm eyepiece; great for solar observing.

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    Model#: LS12E

    Regular Price: $119.00

    Special Price: $89.00

  17. 16mm Solar Eyepiece Lunt

    Lunt - 16mm Solar Eyepiece

    Lunt 16mm eyepiece; great for solar observing.

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    Model#: LS16E

    Regular Price: $119.00

    Special Price: $89.00

  18. 19mm eyepiece lunt

    Lunt - 19mm Solar Eyepiece

    Lunt 19mm eyepiece; great for solar observing.

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    Model#: LS19E

    Regular Price: $119.00

    Special Price: $89.00

  19. 27mm Lunt Eyepiece

    Lunt - 27mm Solar Eyepiece

    Lunt 27mm eyepiece; great for solar observing.

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    Model#: LS27E

    Regular Price: $119.00

    Special Price: $89.00

  20. Lunt - Solar Eyepiece Set - 1.25"

    Lunt - Solar Eyepiece Set - 1.25"

    Lunt eyepiece set; great for solar observing! People who have an interest in the planetary objects and love to collect new and exciting gadgets to entertain their hobby of star gazing and Sun observance are always on the lookout to buy a new gadget as soon as it comes out.

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    Model#: LSEPSET

    Regular Price: $499.00

    Special Price: $395.00

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