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Diagonals

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  1. PrimaLuceLab XP 90° 50.8mm Dielectric Diagonal

    PrimaLuceLab - 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
    $129.95

  2. Olivon - 2" Diagonal Erecting Prism

    Olivon - 2" Diagonal Erecting Prism

    Olivon 2" - 1.25" 90° Prism Diagonal w/BAK4 & FMC Coating

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    Model#: OL2DIAG-US
    $129.00

  3. Astro-Tech - 1.25" Dielectric Coated Star Diagonal with Compression Ring

    Astro-Tech - 1.25" Dielectric Coated Star Diagonal with Compression Ring

    This 1.25” Astro-Tech first-surface mirror star diagonal was named a Sky & Telescope Hot Product for 2007!

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    Model#: AT1D
    $69.95

  4. 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
    $87.99

  5. 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

  6. Baader Planetarium Erecting Prism 1.25"

    Baader Planetarium - Erecting Prism 1.25"

    Erecting prism with a 45° viewing position used for terrestrial observation. They show an upright and correctly orientated image.

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    Model#: AMICI-45
    $92.00

  7. AMICI-DX1

    Baader Planetarium - Precision Amici Diagonal

    The Amici Prism has long been favored as the best choice for producing correctly oriented images in refractors and cassegrain type telescopes.

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    FREE SHIPPING
    (48 States)
    Model#: AMICI-DX1
    $299.00

  8. Explore Scientific - TDM Adapter with Encoder 16" ACF (requires 0721004 TDM Controller with Cable)

    Explore Scientific - TDM Adapter with Encoder 16" ACF (requires 0721004 TDM Controller with Cable)

    TDM Adapter with Encoder 16" ACF (requires 0721004 TDM Controller with Cable)

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    (48 States)
    Model#: 0721260
    $1,599.99

  9. TDM

    Explore Scientific - TDM Telescope Drive Master Encoder Only (Requires Mount Specific Adapter)

    TDM Telescope Drive Master Encoder Only (Requires Mount Specific Adapter)

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    (48 States)
    Model#: 0721001
    $899.99

  10. Explore Scientific TDM Adapter iOptron iEQ45

    Explore Scientific -TDM Adapter iOptron iEQ45

    TDM Adapter iOptron iEQ45

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    (48 States)
    Model#: 0721045
    $469.99

  11. Explore Scientific - TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter)

    Explore Scientific - TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter)

    TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter) ... Learn More
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    (48 States)
    Model#: 721000
    $1,799.99

  12. Explore Scientific - TDM Adapter for Celestron CGE Pro

    Explore Scientific - TDM Adapter for Celestron CGE Pro

    TDM Adapter for Celestron CGE Pro ... Learn More
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    (48 States)
    Model#: 0721028
    $329.99

  13. Explore Scientific - TDM Adapter for Meade LX200ACF

    Explore Scientific - TDM Adapter for Meade LX200ACF

    TDM Adapter for MEADE LX200ACF ... Learn More
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    (48 States)
    Model#: 0721250
    $729.99

  14. Explore Scientific - TDM Adapter for Meade LX200 8"-12"

    Explore Scientific - TDM Adapter for Meade LX200 8"-12"

    TDM Adapter for MEADE LX200 8“-12“ ... Learn More
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    (48 States)
    Model#: 0721220
    $729.99

  15. Explore Scientific TDM Adapter for Astro Physics 1200 Mount

    Explore Scientific - TDM Adapter for Astro Physics 1200 Mount

    TDM Adapter for Astro Physics 1200 Mount

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    (48 States)
    Model#: 0721200
    $329.99

  16. Explore Scientific - TDM Adapter for Meade LXD75

    Explore Scientific - TDM Adapter for Meade LXD75

    You need this adapter to attach the TDM to your MEADE LXD75 mount.

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    (48 States)
    Model#: 0721075
    $479.99

  17. Explore Scientific - TDM Adapter for Vixen GPDX / Celestron CAM/GT5

    Explore Scientific - TDM Adapter for Vixen GPDX / Celestron CAM/GT5

    TDM Adapter for Vixen GPDX / Celestron CAM/GT5

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    (48 States)
    Model#: 0721070
    $489.99

  18. Explore Scientific TDM Adapter for Synta/Sky-Watcher EQ6 Mount (Modified)

    Explore Scientific - TDM Adapter for Synta/Sky-Watcher EQ6 Mount (Modified)

    TDM Adapter for Synta/Sky-Watcher EQ6 Mount (Modified)

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    (48 States)
    Model#: 0721062
    $509.99

  19. 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

  20. Explore Scientific 3" Diagonal

    Explore Scientific - 3" ES Diagonal

    Diagonal for 3" Eyepieces. Will work with the Explore Scientific 30mm 100° Series eyepiece.

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    FREE SHIPPING
    (48 States)
    Model#: DD03-01CF
    $399.99

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