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Diagonals

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  1. Lumicon - 2in Multiple Filter Selector-Lumibrite Diagonal Combo for Refractors

    Lumicon - 2in Multiple Filter Selector-Lumibrite Diagonal Combo for Refractors

    The Lumicon 2" Multiple Filter Selector-LumiBrite Diagonal Combo for Refractors brings you the convenience of a 2" filter selector and the quality of a dielectric star diagonal to a refractor telescope ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: LD3025
    $395.95

  2. Lumicon - 2in Multiple Filter Selector-Enhanced Diagonal Combo for Refractors

    Lumicon - 2in Multiple Filter Selector-Enhanced Diagonal Combo for Refractors

    The Lumicon 2" Multiple Filter Selector-Enhanced Diagonal Combo for Refractors allows you to enjoy the convenience of a filter selector and the quality of an Enhanced Aluminum star-diagonal with a refractor telescope ... Learn More
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    (48 States)
    Model#: LD3015
    $296.95

  3. Lumicon - 1.25" Multi-Coated Prism Diagonal

    Lumicon - 1.25" Multi-Coated Prism Diagonal

    The 1.25" Multi-Coated Prism Diagonal is a Lumicon-quality prism diagonal at an entry-level price.

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    Model#: LD1035
    $54.95

  4. Lumicon - 1.25" 90 Degree Correct Image Diagonal

    Lumicon - 1.25" 90 Degree Correct Image Diagonal

    The Lumicon 1.25" 90 degree Correct Image Diagonal provides a corrected image (left/right; up/down) for finder and spotting scopes. May also be used on refractors and SCTs. Includes filter threads.

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    Model#: LD1030

    Regular Price: $108.00

    Special Price: $76.95

  5. Lumicon - 2in LumiBrite Diagonal

    Lumicon - 2in LumiBrite Diagonal

    The Lumicon 2" LumiBrite Dielectric Coated Diagonal reflects 99 percent of the light from the telescope's primary optics into your eyepiece. Its single 1/10 wave precision polished surface is superior to the three surfaces of prism diagonals ... Learn More
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    (48 States)
    Model#: LD1025
    $263.95

  6. Lumicon - 1.25" LumiBrite Diagonal

    Lumicon - 1.25" LumiBrite Diagonal

    The Lumicon 1.25" LumiBrite Dielectric Coated Diagonal reflects 99 percent of the light from the telescope's primary optics into your eyepiece.

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    Model#: LD1020

    Regular Price: $215.00

    Special Price: $164.95

  7. Lumicon - 2in Enhanced Diagonal

    Lumicon - 2in Enhanced Diagonal

    The Lumicon 2" Enhanced Aluminum Diagonal reflects 96 to 97 percent of the light from the telescope's primary optics directly into your eyepiece. ... Learn More
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    (48 States)
    Model#: LD1015
    $208.95

  8. Lumicon - 1.25" Enhanced Diagonal

    Lumicon - 1.25" Enhanced Diagonal

    The Lumicon 1.25" Enhanced Aluminum Diagonal reflects 96 to 97 percent of the light from the telescope's primary optics directly into your eyepiece.

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    Model#: LD1010

    Regular Price: $130.00

    Special Price: $99.95

  9. Lumicon - 2in Star Mirror Diagonal

    Lumicon - 2in Star Mirror Diagonal

    The Lumicon 2" Mirror Diagonal features compression-ring eyepiece holders, and includes a 2" to 1.25" reducer. A Lumicon-quality star diagonal at an entry-level price ... Learn More
    Model#: LD1005
    $109.95

  10. Lumicon - Adapter to use 2 " MFS on Enhanced/Lumibrite Diagonals for Refractors

    Lumicon - Adapter to use 2 " MFS on Enhanced/Lumibrite Diagonals for Refractors

    The Adapter for 2" MFS on Enhanced/LumiBrite Diagonals for Refractors is an ultra low-profile (0.54") eyepiece holder for the Lumicon 2" Enhanced Aluminum or 2" LumiBrite Dielectric diagonal ... Learn More
    Model#: LD1050
    $32.95

  11. Celestron - 2" XLT Diagonal (SCT)

    Celestron - 2" XLT Diagonal (SCT)

    Introducing our new 2" XLT Diagonal. This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces

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    Model#: 93527
    $149.95

  12. Celestron - Diagonal, Star 1.25"

    Celestron - Diagonal, Star 1.25"

    Our Star Diagonal lets you view objects that are at a 90° angle from the direction the telescope is pointing, thereby allowing comfortable viewing when the telescope is pointed at, or near, the zenith (i.e. directly overhead). The resulting image is right side up, but will be reversed from left to right.

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    Model#: 94115-A
    $34.95

  13. Celestron - 45 Degree Diagonal, Erect Image - 1.25"

    Celestron - 45 Degree Diagonal, Erect Image - 1.25"

    Celestron's 1-1/4" Erect Image Diagonals are an Amici prism design. This design allows you to look into the telescope at a 45° angle, at images that are oriented properly, meaning the image is upright and correct from left to right.

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    Model#: 94112-A
    $39.95

  14. Meade - #933 45 degree Hybrid Erecting Prism

    Meade - #933 45 degree Hybrid Erecting Prism

    All ETX telescopes include an internal, flat mirror to reflect light to the telescope's 90-degree astronomical observing position; in this position the telescope's image is right side up, but reversed ... Learn More
    Model#: 07220
    $43.95

  15. Meade - #937 2 " Diagonal Mirror

    Meade - #937 2 " Diagonal Mirror

    2" Diagonal Mirror: Large-barrel 2" eyepieces (e.g., MH50mm, below) permit wide fields of view impossible to achieve with eyepieces of smaller barrel diameter ... Learn More
    Model#: 07221
    $49.99

  16. Vixen - 1.25" Erect Image Adapter

    Vixen - 1.25" Erect Image Adapter

    Vixen's Erect Image Adapter is designed to fit a 1.25” focuser. This straight through adapter will re-invert and flip the image so it will appear fully corrected.

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    Model#: 3847
    $149.00

  17. Vixen - 2" Diagonal Mirror

    Vixen - 2" Diagonal Mirror

    Enhanced Aluminum Coatings give 96% reflectivity to this high quality 2" Diagonal. Fitted with a 2" barrel with safety groove this diagonal is designed to get most photons from a variety of telescopes to the observer's eye.

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    FREE SHIPPING
    (48 States)
    Model#: 3704
    $240.00

  18. Vixen - 1.25" Diagonal Prism

    Vixen - 1.25" Diagonal Prism

    The Vixen Diagonal Prism is designed for use with most telescopes. This high quality 90 degree prism allows viewing at comfortable angles.

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    Model#: 3675
    $79.95

  19. Vixen - Flip Mirror Diagonal

    Vixen - Flip Mirror Diagonal

    With an enhanced aluminum coating giving 96% reflectivity, this flip mirror diagonal has much to offer.  Attach this diagonal to your telescope via a 2” threaded barrel that accepts 49mm filters.

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    Model#: 2680
    $109.95

  20. TeleVue - 2" 90 degree Everbrite Diagonal - Satin*

    TeleVue - 2" 90 degree Everbrite Diagonal - Satin*

    Whiter and brighter images. Simply put, that is the benefit the Everbrite mirror coating. This exotic, dielectric, nonmetallic coating is 99% reflective across the full visual spectrum, resulting in the "whitest," most natural image available ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: DSF-8002

    Regular Price: $345.00

    Special Price: $269.95

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