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Diagonals

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  1. 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
    10% Off While Supplies Last!

    Regular Price: $109.95

    Special Price: $98.00

  2. Vernonscope 2" 1/20th Wave Quartz Star Diagonal

    Vernonscope - 2" 1/20th Wave Quartz Star Diagonal

    The Vernonscope 2" Wave Quartz Star Diagonal is composed of a 99% reflective mirror that is considered one the best in the world because of the Zygo interferometer printout included.

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    FREE SHIPPING
    (48 States)
    Model#: VRN2IN120DIAG
    $795.00

  3. Vernonscope 1.25" 1/20th Wave Quartz Star Diagonal

    Vernonscope - 1.25" 1/20th Wave Quartz Star Diagonal

    The Vernonscope 1.25" Wave Quartz Star Diagonal is composed of a 99% reflective mirror that is considered one the best in the world because of the Zygo interferometer printout included.

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    (48 States)
    Model#: VRN114DIAG
    $495.00

  4. TeleVue - SCT 90 degree Everbrite Diagonal*

    TeleVue - SCT 90 degree Everbrite Diagonal*

    Same EveDPS-2004rbrite as above, but with a shorter male end to reduce overall scope length ... Learn More
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    (48 States)
    Model#: DPS-2004
    5% off

    Regular Price: $325.00

    Special Price: $308.75

  5. TeleVue - Everbrite Diagonal 1-1/4"*

    TeleVue - Everbrite Diagonal 1-1/4"*

    99% Everbrite broad band coating, solid body construction

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    (48 States)
    Model#: DPC-1250
    5% off

    Regular Price: $225.00

    Special Price: $213.75

  6. TeleVue - 90° Enhanced 2" Star Diagonal (Satin)*

    TeleVue - 90° Enhanced 2" Star Diagonal (Satin)*

    This is the same 2-inch Star Diagonal that comes with the Tele-Vue 85 and the Pronto. Exquisitely crafted to fold light exactly 90 degrees.

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    (48 States)
    Model#: DSC-8001
    5% off

    Regular Price: $250.00

    Special Price: $237.50

  7. TeleVue - 90° Diagonal 1-1/4 "

    TeleVue - 90° Diagonal 1-1/4 "

    96% Enhanced mirror coating. Solid body construction

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    Model#: DSC-0125
    5% off

    Regular Price: $165.00

    Special Price: $156.75

  8. TeleVue - 90 Degree Diagonal 2 "

    TeleVue - 90 Degree Diagonal 2 "

    96% Enhanced mirror coating ... Learn More
    Model#: DSC-2001
    5% off

    Regular Price: $210.00

    Special Price: $199.50

  9. TeleVue - 60 Degree Everbrite Diagonal 1-1/4"

    TeleVue - 60 Degree Everbrite Diagonal 1-1/4"

    This TeleVue Everbrite diagonal sports a comfortable 60° angle, 99% Everbrite for terrestrial viewing. Image correct up-down, reversed L-RThis is an entirely new angle for Tele Vue! It's a real breakthrough for birding and terrestrial viewing; the perfect combination of comfort and performance. Al came up with this very desirable accessory while playing at the Winter Star Party

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    (48 States)
    Model#: DPC-6012
    5% off

    Regular Price: $295.00

    Special Price: $280.25

  10. TeleVue 45 Degree Prism

    TeleVue - 45 Degree Prism

    45° Prism for refractors gives normal image orientation. Terrestrial only While star diagonals correct a refractor's inverted image, they don't correct the left-right orientation

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    Model#: AMI-0011
    5% off

    Regular Price: $80.00

    Special Price: $76.00

  11. 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

  12. Takahashi - 2" Mirror Diagonal with 1.25" Adapter

    Takahashi - 2" Mirror Diagonal with 1.25" Adapter

    Don't rob yourself of the extra light by using a 1.25" diagonal... Get the full effect by going to a full 2" with the Takahashi TDM0200 Mirror Diagonal.

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    FREE SHIPPING
    (48 States)
    Model#: TDM0200
    $540.00

  13. Takahashi Star Diagonal

    Takahashi - 1.25" Star Diagonal

    Let's talk quality here. The Takahashi 1.25" star diagonal uses a high quality prism instead of a mirror. This means a lifetime of service where the coatings won't erode.

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    Model#: TFP0090
    $147.00

  14. PrimaLuceLab XP 90° 50.8mm Dielectric Diagonal

    PrimaLuce Lab - XP 90° 50.8mm Dielectric Diagonal

    PrimaLuceLab XP dielectric diagonal mirrors have raised the bar when it comes to optical accessories thanks to their high optical and mechanical quality at a great price.

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    Model#: PLL-XP90508
    $169.00

  15. PrimaLuceLab XP 90° 31.8mm Dielectric Diagonal

    PrimaLuce Lab - XP 90° 31.8mm Dielectric Diagonal

    PrimaLuceLab XP dielectric diagonal mirrors have raised the bar when it comes to optical accessories thanks to their high optical and mechanical quality at a great price.

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    Model#: PLL-XP90318
    $117.00

  16. PrimaLuceLab DX45 31.8mm Erect Image Prism

    PrimaLuce Lab - DX45 31.8mm Erect Image Prism

    The PrimaLuceLab AIRY apochromatic refractors (and other quality refractors from different brands) are intended to observe and image the wonders of the Universe, but they're excellent for visual observing as well good accessories are added in the mix that can turn them into spotting scopes!

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    Model#: PLL-DX45
    $91.00

  17. PlaneWave Stellarvue 2" Mirror Diagonal

    PlaneWave - Stellarvue 2" Mirror Diagonal

    This mirror star diagonal features a thick, oversized mirror. Polished to 1/10th wave minimum and coated with a protective, dielectric coating with 99% reflectivity.

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    Model#: D1029ED
    $199.00

  18. Orion 2" Dielectric Mirror Diagonal 2"-1.25" Adapter

    Orion 2" Dielectric Mirror Diagonal 2"-1.25" Adapter

    Our highest-quality 2" Orion Dielectric Mirror Star Telescope Diagonals feature sophisticated, lab-tested dielectric coatings that boast an astounding 99% reflectivity.

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    Model#: ORI-08727
    $152.99

  19. Orion 1.25" Enhanced Mirror Star Telescope Diagonal

    Orion - 1.25" Enhanced Mirror Star Telescope Diagonal

    Don't put a standard-issue diagonal into a high-quality refractor or Cassegrain telescope or you'll be losing 10% or more of the light collected by the telescope's optics.

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    Model#: 08879
    $69.99

  20. Orion - 1.25" Deluxe 45-degree Correct-Image Prism Diagonal

    Orion - 1.25" Deluxe 45-degree Correct-Image Prism Diagonal

    Turn any refractor or Cassegrain telescope into a high-performance daytime spotting scope with our Deluxe 45° Correct-Image Diagonal.   

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    Model#: ORI-08754
    $87.99

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