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Diagonals

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  1. Lumicon - Adapter to use 2 " MFS on Enhanced/Lumibrite Diagonals for Refractors

    Lumicon - Adapter to use 2 " MFS on Enhanced/Lumibrite Diagonals for Refractors

    The Adapter for 2" MFS on Enhanced/LumiBrite Diagonals for Refractors is an ultra low-profile (0.54") eyepiece holder for the Lumicon 2" Enhanced Aluminum or 2" LumiBrite Dielectric diagonal ... Learn More
    Model#: LD1050
    $32.95

  2. 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

  3. Meade - 45 degree Hybrid Erecting Prism

    Meade - 45 degree Hybrid Erecting Prism

    Telescopes contain internal mirrors that reflect light to the telescope's astronomical observing position

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    Model#: 07217

    Regular Price: $43.00

    Special Price: $39.95

  4. Meade #918A Diagonal Star Prism

    Meade - #918A Diagonal Prism

    This is the 1.25" star diagonal supplied with the Meade LX-Series Schmidt-Cassegrain telescopes (LX90, LX200, etc). It is a replacement for a lost or damaged Meade scope diagonal

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    Model#: 07202
    $43.00

  5. 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

  6. 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

  7. Meade - #932 45 Degree Erecting Prism 1.25 "

    Meade - #932 45 Degree Erecting Prism 1.25 "

    All ETX telescopes include an internal, flat mirror to reflect light to the telescope's 90-degree astronomical observing position; in this position the telescope's image is right side up, but reversed ... Learn More
    Model#: 07210
    $49.99

  8. Meade - #937 2 " Diagonal Mirror

    Meade - #937 2 " Diagonal Mirror

    2" Diagonal Mirror: Large-barrel 2" eyepieces (e.g., MH50mm, below) permit wide fields of view impossible to achieve with eyepieces of smaller barrel diameter ... Learn More
    Model#: 07221
    $49.99

  9. Meade - #933 45 degree Hybrid Erecting Prism

    Meade - #933 45 degree Hybrid Erecting Prism

    All ETX telescopes include an internal, flat mirror to reflect light to the telescope's 90-degree astronomical observing position; in this position the telescope's image is right side up, but reversed ... Learn More
    Model#: 07220
    $49.99

  10. Lumicon - 1.25" Multi-Coated Prism Diagonal

    Lumicon - 1.25" Multi-Coated Prism Diagonal

    The 1.25" Multi-Coated Prism Diagonal is a Lumicon-quality prism diagonal at an entry-level price.

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    Model#: LD1035
    $54.95

  11. Opticstar 1.25" Light Splitter

    Opticstar - 1.25" Light Splitter

    The Opticstar Light Splitter prism diagonal can be used to track or auto-guide and image at the same time. It greatly helps to centre and focus objects to be imaged with a CCD imager or film camera.

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    Model#: OSRSPL50

    Regular Price: $60.00

    Special Price: $57.00

  12. Celestron - Diagonal, Mirror - 2"

    Celestron - Diagonal, Mirror - 2"

    This high quality 90-degree multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces.

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    Model#: 93519

    Regular Price: $109.95

    Special Price: $63.95

  13. 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

  14. Lumicon - 1.25" 90 Degree Correct Image Diagonal

    Lumicon - 1.25" 90 Degree Correct Image Diagonal

    The Lumicon 1.25" 90 degree Correct Image Diagonal provides a corrected image (left/right; up/down) for finder and spotting scopes. May also be used on refractors and SCTs. Includes filter threads.

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    Model#: LD1030

    Regular Price: $108.00

    Special Price: $76.95

  15. 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

  16. Vixen - 1.25" Diagonal Prism

    Vixen - 1.25" Diagonal Prism

    The Vixen Diagonal Prism is designed for use with most telescopes. This high quality 90 degree prism allows viewing at comfortable angles.

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    Model#: 3675
    $79.95

  17. TeleVue - 45 Degree Prism

    TeleVue - 45 Degree Prism

    45° Prism for refractors gives normal image orientation. Terrestrial onlyWhile star diagonals correct a refractor's inverted image, they don't correct the left-right orientation ... Learn More
    Model#: AMI-0011
    $80.00

  18. 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

  19. Baader Planetarium - Amici Prism Diagonal 45° , 1.25in with 24mm clear aperture (terrestrial use)

    Baader Planetarium - Amici Prism Diagonal 45° , 1.25in with 24mm clear aperture (terrestrial use)

    The problem with Amici prisms is due to the fact that they must have a high-end surface quality to be effective. The Baader AMI-DX1 now brings this to reality. With a slightly oversized prism providing a full clear aperture of 1.25", the AMICI-45 balances the effect of the defects found in amici diagnols.

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    Model#: AMICI-45
    $92.00

  20. Lumicon - 1.25" Enhanced Diagonal

    Lumicon - 1.25" Enhanced Diagonal

    The Lumicon 1.25" Enhanced Aluminum Diagonal reflects 96 to 97 percent of the light from the telescope's primary optics directly into your eyepiece.

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    Model#: LD1010

    Regular Price: $130.00

    Special Price: $99.95

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