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Diagonals

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  1. Astro-Physics MaxBright Diagonal

    Astro-Physics - MaxBright Diagonal

    Please Note: We cannot ship Astro-Physics products to customers in Germany, Switzerland, Austria, France and Japan.

    The Astro-Physics 2" MaxBright Diagonal was designed with several unique features to provide optimum performance and years of use.

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    (48 States)
    Model#: PMDMAX
    $320.00

  2. 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

  3. 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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    (48 States)
    Model#: MAX-2C
    $297.00

  4. Baader Planetarium 2" Maxbright Mirror Diagonal

    Baader Planetarium - 2" Maxbright Mirror Diagonal

    The Baader Planetarium 2" Maxbright Mirror Diagonal includes a 2" removable eyepiece holder, compression ring, two large thumbscrews and 2" nosepiece, making the diagonal suitable for most 2" astronomy filters.

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    (48 States)
    Model#: MAX-2
    $459.00

  5. 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

  6. AMICI-DX1

    Baader Planetarium - Precision Amici Diagonal

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    Model#: AMICI-DX1
    $299.00

  7. Baader Planetarium Prism Diagonal T-2/90°

    Baader Planetarium - Prism Diagonal T-2/90° 32mm with 1.25" Eyepiece Holder and 1.25" Nosepiece

    The Baader T2 diagonals offer large free apertures with flexibility to most telescopes without vignetting problem.

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    Model#: PRISM-1
    $169.00

  8. Baader Planetarium T-2 Prism Star Diagonal

    Baader Planetarium - T-2 Prism Star Diagonal

    The Baader Planetarium T-2 Prism Star Diagonal is easily the finest prism star diagonal available today.

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    (48 States)
    Model#: T2-01B
    $272.00

  9. Canadian Telescopes - 1.25in. Dielectric Mirror Star Diagonal

    Canadian Telescopes - 1.25in. Dielectric Mirror Star Diagonal

    The Diagonal Mirror has enhanced dielectric coatings that give an incredible 99% reflectivity over the visual spectrum.

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    Model#: CT240067
    $84.99

  10. 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

  11. 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

  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 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

  14. Explore Scientific - 2"  99% Reflectivity ES Diagonal

    Explore Scientific - 2" 99% Reflectivity ES Diagonal

    The Explore Scientific 2" Dielectric Diagonal is a nice light weight diagonal. The engineers at Explore Scientific were able to achieve weight savings when compared to traditional diagonals replacing some of the base material with carbon fiber material

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    Model#: DD02-00CF
    $119.99

  15. 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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    (48 States)
    Model#: DD03-01CF
    $419.99

  16. 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

  17. Explore Scientific - TDM Adapter for Celestron CGE Mount

    Explore Scientific - TDM Adapter for Celestron CGE Mount

    TDM Adapter for Celestron CGE Mount

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    (48 States)
    Model#: 0721020
    $379.99

  18. 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

  19. Explore Scientific TDM Adapter for Celestron CGEM Mount

    Explore Scientific - TDM Adapter for Celestron CGEM Mount

    TDM Adapter for Celestron CGEM Mount

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    (48 States)
    Model#: 0721025
    $369.99

  20. Explore Scientific TDM Adapter for HEQ5/Orion Sirius EQ-G

    Explore Scientific - TDM Adapter for HEQ5/Orion Sirius EQ-G

    TDM Adapter for Synta/Sky-Watcher Pro HEQ5 Mount ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 0721050
    $439.00

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