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ZWO EAFN Desktop
IMPORTANT: Starting May 14st, all orders for products that are made in China, regardless of their value, will be subjected to 30% tariffs when imported in the USA. These fees will be billed to you by the carrier, and are your responsibility.
IMPORTANT: Starting May 14st, all orders for products that are made in China, regardless of their value, will be subjected to 30% tariffs when imported in the USA. These fees will be billed to you by the carrier, and are your responsibility.

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Diagonals

  • Original price $296.00 USD - Original price $296.00 USD
    Original price
    $296.00 USD
    $296.00 USD - $296.00 USD
    Current price $296.00 USD

    APM 90° Erect Image Prism - 2"

    APM-2-diag-EI-PR-FL

    APM 2 inch Erect-Image-prism with fast-lock and ultra broadband coatingThe erecting-prism is produced by APM-Telescopes with highest qualityThis e...

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    Original price $296.00 USD - Original price $296.00 USD
    Original price
    $296.00 USD
    $296.00 USD - $296.00 USD
    Current price $296.00 USD
  • Original price $181.00 USD - Original price $181.00 USD
    Original price
    $181.00 USD
    $181.00 USD - $181.00 USD
    Current price $181.00 USD

    APM Dielectric Mirror Star Diagonal - 2"

    APM-2-diag-DX-FL
    2 in stock

    APM 2 inch star diagonal mirror with 99% di-electric coating with fast-lockThe diagonal mirror is produced by APM-Telescopes with highest qualityOp...

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    Original price $181.00 USD - Original price $181.00 USD
    Original price
    $181.00 USD
    $181.00 USD - $181.00 USD
    Current price $181.00 USD
  • Original price $221.00 USD - Original price $221.00 USD
    Original price
    $221.00 USD
    $221.00 USD - $221.00 USD
    Current price $221.00 USD

    APM Prism Diagonal - 2"

    APM-2-diag-PR-FL

    APM 2 inch Diagonalprism with fast-lock and ultra broadband coatingThe prism is produced by APM-Telescopes with highest qualityOpticsHighest preci...

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    Original price $221.00 USD - Original price $221.00 USD
    Original price
    $221.00 USD
    $221.00 USD - $221.00 USD
    Current price $221.00 USD
  • Original price $104.00 USD - Original price $104.00 USD
    Original price
    $104.00 USD
    $104.00 USD - $104.00 USD
    Current price $104.00 USD

    Baader 45° Amici Prism Diagonal w/ 24mm Clear Aperture - 1.25"

    BAA-2956150

    Much larger prism than other so-called "Erecting prisms" Many Erect image prisms have only 19 mm free passage opening and therefore are not suitab...

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    Original price $104.00 USD - Original price $104.00 USD
    Original price
    $104.00 USD
    $104.00 USD - $104.00 USD
    Current price $104.00 USD
  • Original price $268.00 USD - Original price $268.00 USD
    Original price
    $268.00 USD
    $268.00 USD - $268.00 USD
    Current price $268.00 USD

    Baader 45° Amici Prism Diagonal 45° - 2" SCT Thread

    BAA-2956151

    2" SC-thread and 2"/1¼"-reducer Direct attachment to Schmidt-Cassegrains Correct image orientation Excellent for terrestrial viewing

    Original price $268.00 USD - Original price $268.00 USD
    Original price
    $268.00 USD
    $268.00 USD - $268.00 USD
    Current price $268.00 USD
  • Original price $806.00 USD - Original price $806.00 USD
    Original price
    $806.00 USD
    $806.00 USD - $806.00 USD
    Current price $806.00 USD

    Baader 90° Astro-Grade Amici Prism w/ BBHS Coating - 2" ClickLock

    BAA-2456120

    2" ClickLock-Clamp and 2" nosepiece Correct image orientation Suited for astronomical observation at high magnification Hard-silver-coated and pro...

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    Original price $806.00 USD - Original price $806.00 USD
    Original price
    $806.00 USD
    $806.00 USD - $806.00 USD
    Current price $806.00 USD
  • Original price $358.00 USD - Original price $358.00 USD
    Original price
    $358.00 USD
    $358.00 USD - $358.00 USD
    Current price $358.00 USD

    Baader 90° Astro-Grade Amici Prism w/ BBHS Coating - T-2

    BAA-2456130
    1 in stock

    T-2/90° Baader Roof-Prism. Manufactured by Zeiss standard, both sides with T-2 system threads. This Prism is multicoated and built in a solid meta...

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    Original price $358.00 USD - Original price $358.00 USD
    Original price
    $358.00 USD
    $358.00 USD - $358.00 USD
    Current price $358.00 USD
  • Original price $335.00 USD - Original price $335.00 USD
    Original price
    $335.00 USD
    $335.00 USD - $335.00 USD
    Current price $335.00 USD

    Baader 90° Erecting Prism Diagonal - 2"

    BAA-2956152

    90 ° Amici-erecting-prism with 2 "eyepiece and 2" barrel Including Reduction 2 "to 1¼" Excellent for terrestrial viewing with 2 "eyepieces Not sui...

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    Original price $335.00 USD - Original price $335.00 USD
    Original price
    $335.00 USD
    $335.00 USD - $335.00 USD
    Current price $335.00 USD
  • Original price $164.00 USD - Original price $164.00 USD
    Original price
    $164.00 USD
    $164.00 USD - $164.00 USD
    Current price $164.00 USD

    Baader 90° Prism Diagonal w/ 32mm Prism - T-2

    BAA-2456005

    High-quality Zenith Prism T-2/90 ° with 32mm Prism Rigid metal body Connection objective side: T-2 internal thread Connection eyepiece: T-2 extern...

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    Original price $164.00 USD - Original price $164.00 USD
    Original price
    $164.00 USD
    $164.00 USD - $164.00 USD
    Current price $164.00 USD
  • Original price $197.00 USD - Original price $197.00 USD
    Original price
    $197.00 USD
    $197.00 USD - $197.00 USD
    Current price $197.00 USD

    Baader 90° Zenith Prism Diagonal w/ 32mm Prism - 1.25"

    BAA-2456005K

    Includes: T-2/32 Diagonal with focusing 1¼" eyepiece clamp (#2458125) and 1¼" nose piece (#2458105) High-quality Zenith Prism T-2/90 ° with 32mm P...

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    Original price $197.00 USD - Original price $197.00 USD
    Original price
    $197.00 USD
    $197.00 USD - $197.00 USD
    Current price $197.00 USD
  • Original price $316.00 USD - Original price $316.00 USD
    Original price
    $316.00 USD
    $316.00 USD - $316.00 USD
    Current price $316.00 USD

    Baader FlipMirror II Star Diagonal

    BAA-2458055
    1 in stock

    Baader-FlipMirror II Star Diagonal (BFM II) with three ports: Straight-through (S52, M48 and T-2 on both sides) for full-frame camera, spectrograp...

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    Original price $316.00 USD - Original price $316.00 USD
    Original price
    $316.00 USD
    $316.00 USD - $316.00 USD
    Current price $316.00 USD
  • Original price $70.00 USD - Original price $70.00 USD
    Original price
    $70.00 USD
    $70.00 USD - $70.00 USD
    Current price $70.00 USD

    Baader M55/M68 Adapter for 2" Baader Mirrors & Prisms

    BAA-2956110

    Baader M55a / M68a (Zeiss) adapter for all Baader 2" mirror and prism star diagonals, for direct connection to the M68 Zeiss thread With this adap...

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    Original price $70.00 USD - Original price $70.00 USD
    Original price
    $70.00 USD
    $70.00 USD - $70.00 USD
    Current price $70.00 USD
  • Original price $142.00 USD - Original price $142.00 USD
    Original price
    $142.00 USD
    $142.00 USD - $142.00 USD
    Current price $142.00 USD

    Baader Maxbright Amici Prism 1.25"w/ Integral 2X Glasspath Corrector

    BAA-2956155

    45 ° an erecting prism Amici Including 2x Glaswegkorrektor ™ (Glass Path Corrector) and 1¼ "barrel Suitable for all SC telescopes and refractors O...

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    Original price $142.00 USD - Original price $142.00 USD
    Original price
    $142.00 USD
    $142.00 USD - $142.00 USD
    Current price $142.00 USD
  • Original price $279.00 USD - Original price $279.00 USD
    Original price
    $279.00 USD
    $279.00 USD - $279.00 USD
    Current price $279.00 USD

    Baader Maxbright Mirror Diagonal - T-2

    BAA-2456100

    1¼ "Maxbright Universal Star Diagonal Sitall mirror material (glass ceramic with zero expansion coefficient), 1/10 lambda surface finish 140 coati...

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    Original price $279.00 USD - Original price $279.00 USD
    Original price
    $279.00 USD
    $279.00 USD - $279.00 USD
    Current price $279.00 USD
  • Original price $347.00 USD - Original price $347.00 USD
    Original price
    $347.00 USD
    $347.00 USD - $347.00 USD
    Current price $347.00 USD

    Baader Mirror Diagonal - 2" ClickLock

    BAA-2956100
    1 in stock

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

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    Original price $347.00 USD - Original price $347.00 USD
    Original price
    $347.00 USD
    $347.00 USD - $347.00 USD
    Current price $347.00 USD
  • Original price $559.00 USD - Original price $559.00 USD
    Original price
    $559.00 USD
    $559.00 USD - $559.00 USD
    Current price $559.00 USD

    Baader Mirror Diagonal w/ BBHS Coating - 2" ClickLock

    BAA-2456115

    2" BBHS star diagonal with 2" ClickLock terminal and black case. Provides greatest reflectance over most spectral range from 390 to 2000nm New inc...

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    Original price $559.00 USD - Original price $559.00 USD
    Original price
    $559.00 USD
    $559.00 USD - $559.00 USD
    Current price $559.00 USD
  • Original price $335.00 USD - Original price $335.00 USD
    Original price
    $335.00 USD
    $335.00 USD - $335.00 USD
    Current price $335.00 USD

    Baader Mirror Diagonal w/ BBHS Coating - T-2

    BAA-2456103

    T-2 BBHS star diagonal withT-2 threads for compatibility with all Baader's Astro T2 system of parts Provides high reflectance over a wide spectral...

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    Original price $335.00 USD - Original price $335.00 USD
    Original price
    $335.00 USD
    $335.00 USD - $335.00 USD
    Current price $335.00 USD
  • Original price $74.00 USD - Original price $74.00 USD
    Original price
    $74.00 USD
    $74.00 USD - $74.00 USD
    Current price $74.00 USD

    Baader Q-Turret Quad Eyepiece Revolver - 1.25"

    BAA-2957010

    The Baader Q-Turret enables quick changing between the different 1.25-inch eyepieces or a planetary camera. It fits most refractors and Schmidt-Cas...

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    Original price $74.00 USD - Original price $74.00 USD
    Original price
    $74.00 USD
    $74.00 USD - $74.00 USD
    Current price $74.00 USD
  • Original price $582.00 USD - Original price $582.00 USD
    Original price
    $582.00 USD
    $582.00 USD - $582.00 USD
    Current price $582.00 USD

    Baader Star Diagonal Prism w/ Zeiss Spec Prism & BBHS Coating - 2" ClickLock

    BAA-2456117
    1 in stock

    2" BBHS prism star diagonal (BaK4 glass) with 2" ClickLock clamp and black body. High-quality Zeiss-spec prism produced according to Zeiss standar...

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    Original price $582.00 USD - Original price $582.00 USD
    Original price
    $582.00 USD
    $582.00 USD - $582.00 USD
    Current price $582.00 USD
  • Original price $279.00 USD - Original price $279.00 USD
    Original price
    $279.00 USD
    $279.00 USD - $279.00 USD
    Current price $279.00 USD

    Baader Star Diagonal Prism w/ Zeiss Spec Prism & BBHS Coating - T-2

    BAA-2456095

    T-2/90 ° diagonal prism (BaK4 glass) with 35mm free aperture terminal objective side: 2 "or 1¼" Connection eyepiece: 1¼ " Prism made in accordance...

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    Original price $279.00 USD - Original price $279.00 USD
    Original price
    $279.00 USD
    $279.00 USD - $279.00 USD
    Current price $279.00 USD
  • Original price $45.00 USD - Original price $45.00 USD
    Original price
    $45.00 USD
    $45.00 USD - $45.00 USD
    Current price $45.00 USD

    Celestron 45-Degree Erect Image Diagonal

    CEL-94112-A

    Features A great accessory for daytime terrestrial viewing with your telescope This 1.25" diagonal produces right side up and left-to-right correct...

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    Original price $45.00 USD - Original price $45.00 USD
    Original price
    $45.00 USD
    $45.00 USD - $45.00 USD
    Current price $45.00 USD
  • Original price $160.00 USD - Original price $160.00 USD
    Original price
    $160.00 USD
    $160.00 USD - $160.00 USD
    Current price $160.00 USD

    Celestron Dielectric Star Diagonal with Twist-Lock - 1.25"

    CEL-93571

    Features Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings Provides...

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    Original price $160.00 USD - Original price $160.00 USD
    Original price
    $160.00 USD
    $160.00 USD - $160.00 USD
    Current price $160.00 USD
  • Original price $260.00 USD - Original price $260.00 USD
    Original price
    $260.00 USD
    $260.00 USD - $260.00 USD
    Current price $260.00 USD

    Celestron Dielectric Star Diagonal with Twist-Lock - 2"

    CEL-93573
    3 in stock

    Features Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings Provides...

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    Original price $260.00 USD - Original price $260.00 USD
    Original price
    $260.00 USD
    $260.00 USD - $260.00 USD
    Current price $260.00 USD
  • Original price $185.00 USD - Original price $185.00 USD
    Original price
    $185.00 USD
    $185.00 USD - $185.00 USD
    Current price $185.00 USD

    Celestron Mirror Diagonal with XLT Coatings - 2"

    CEL-93527

    Features 2" SCT mirror diagonal with high performance XLT coatings 1/10th wave mirror is tested with an interferometer to ensure quality Housing is...

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    Original price $185.00 USD - Original price $185.00 USD
    Original price
    $185.00 USD
    $185.00 USD - $185.00 USD
    Current price $185.00 USD