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Diagonals

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  1. Baader Planetarium Clicklock Dielectric Star Diagonal - 2"

    Baader Planetarium - Clicklock Dielectric Star Diagonal - 2"

    With their ground-breaking introduction several years ago of the all-dielectric 2" Maxbright star diagonal, Baader Planetarium brought mirror star diagonals into the 21st century.

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    FREE SHIPPING
    (48 States)
    Model#: MAX-2C
    $297.00

  2. 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#: 08754
    $79.95

  3. 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

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

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

    This 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 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: DPC-6012
    $295.00

  5. Takahashi 2" Mirror Diagonal for FSQ-106 Telescope

    DISCONTINUED: Takahashi - 2 " Mirror Diagonal for FSQ-106 Refractor Telescope - DISCONTINUED

    This is a discontinued item. We recommend the Takahashi 2" Mirror Diagonal with 1.25" Adapter as a replacement.

    Crafted exclusively for the Takahashi FSQ-106/106N.

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    FREE SHIPPING
    (48 States)
    Model#: TSD0001
  6. Denkmeier - #S2 Silver Enhanced Power x Switch Star Diagonal - Shorty

    Denkmeier - #S2 Silver Enhanced Power x Switch Star Diagonal - Shorty

    Diagonal #S2 For SCTsAllows Binoviewers to be used in SCTs for instant normal, reduction and multiplication factors ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: S2-97STY
    $389.00

  7. Denkmeier #S2 Dielectric Power x Switch Star Diagonal Regular

    Denkmeier - #S2 Dielectric Power x Switch Star Diagonal - Regular

    Diagonal #S2 For SCTsAllows Binoviewers to be used in SCTs for instant normal, reduction and multiplication factors ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: S2-99REG
    $509.00

  8. Denkmeier #S2 Dielectric Power x Switch Star Diagonal Shorty

    Denkmeier - #S2 Dielectric Power x Switch Star Diagonal - Shorty

    Diagonal #S2 For SCTsAllows Binoviewers to be used in SCTs for instant normal, reduction and multiplication factors ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: S2-99STY
    $509.00

  9. Denkmeier - #R1 Silver Enhanced Power x Switch Star Diagonal - Regular

    Denkmeier - #R1 Silver Enhanced Power x Switch Star Diagonal - Regular

    Diagonal #R1 For RefractorsAllows any Denkmeier Binoviewer to be loaded into the eyepiece receptacle for 3 magnifications with a single pair of eyepieces ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: R1-97REG
    $499.00

  10. Denkmeier - #R1 Silver Enhanced Power x Switch Star Diagonal - Shorty

    Denkmeier - #R1 Silver Enhanced Power x Switch Star Diagonal - Shorty

    Diagonal #R1 For RefractorsAllows any Denkmeier Binoviewer to be loaded into the eyepiece receptacle for 3 magnifications with a single pair of eyepieces ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: R1-97STY
    $499.00

  11. Denkmeier #R1 Dielectric Power x Switch Star Diagonal - Regular

    Denkmeier - #R1 Dielectric Power x Switch Star Diagonal - Regular

    Diagonal #R1 For RefractorsAllows any Denkmeier Binoviewer to be loaded into the eyepiece receptacle for 3 magnifications with a single pair of eyepieces ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: R1-99REG
    $619.00

  12. Denkmeier - #R1 Dielectric Power x Switch Star Diagonal - Shorty

    Denkmeier - #R1 Dielectric Power x Switch Star Diagonal - Shorty

    Diagonal #R1 For RefractorsAllows any Denkmeier Binoviewer to be loaded into the eyepiece receptacle for 3 magnifications with a single pair of eyepieces ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: R1-99STY
    $619.00

  13. Denkmeier - #R2 Silver Enhanced Power x Switch Star Diagonal - Regular

    Denkmeier - #R2 Silver Enhanced Power x Switch Star Diagonal - Regular

    The Denkmeier 2" Power x Switch Diagonal #R2 for Refractors#R2 provides tremendous versatility allowing a binoviewer to move through up to 6 different magnifications with a low 1.26X power factor to a high power of 3 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: R2-97REG
    $599.00

  14. Denkmeier - #S2 Silver Enhanced Power x Switch Star Diagonal - Regular

    Denkmeier - #S2 Silver Enhanced Power x Switch Star Diagonal - Regular

    Diagonal #S2 For SCTsAllows Binoviewers to be used in SCTs for instant normal, reduction and multiplication factors ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: S2-97REG
    $389.00

  15. Denkmeier - #S1 Silver Enhanced Power x Switch Star Diagonal - Regular

    Denkmeier - #S1 Silver Enhanced Power x Switch Star Diagonal - Regular

    2" Star Diagonal # S1Available with 97% Silver Enhanced coatings, includes a 1.25" adapter for 1 ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: S1-97REG
    $389.00

  16. Denkmeier 99% Filter Switch Star Diagonal

    Denkmeier - 99% Filter Switch Star Diagonal

    The Denkmeier Filter Switch is an innovative accessory for both astronomy and photography that allows the user's 2" and 1.25” filters to be moved in and out of the light path while offering full protection from dew and dust.

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    FREE SHIPPING
    (48 States)
    Model#: FSD-99
    $419.00

  17. Celestron - Diagonal, Mirror - 2" - DISCONTINUED

    DISCONTINUED: Celestron - Diagonal, Mirror - 2" - DISCONTINUED

    NOTE: This is a discontinued item. We recommend the Celestron 2" Mirror Diagonal with XLT Coatings as a substitute/replacement.

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    Model#: 93519
  18. Celestron Finderscope Only 8x20 Erect Image

    Celestron - Finderscope Only 8x20 Erect Image

    This 8x20 finderscope features an erect image.

    Finderscopes are secondary scopes, used to help locate objects in the main telescope. The larger the finderscope, the more you'll see, to an upper limit of 50mm.

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    Model#: 94103-A
    $49.00

  19. 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
    $49.95

  20. 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
    $39.95

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