Diagonals and Prisms

Diagonals and Prisms

Diagonals and Prisms

15 products - next page link at the bottom

Showing 1-15 of 47 item(s)

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    • Enjoy better views through your telescope with this premium diagonal
    • Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes
    • Twist-lock keeps the eyepiece centred in the diagonal to provide better optical alignment
    • Accepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1.25” barrel
    • Enjoy better views through your telescope with this premium diagonal
    • Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes
    • Twist-lock keeps the eyepiece centred in the diagonal to provide better optical alignment
    • Includes a step-down-adaptor, so the diagonal accepts eyepieces in both 2” and 1.25” sizes
    • Fits telescopes with 1.25” focusers or visual backs, 90º viewing angle, best for observing objects overhead.
    • Accepts standard 1.25” eyepieces, Barlow lenses, and other accessories with a 1.25” insert barrel.
    • A great accessory for daytime terrestrial viewing with your telescope.
    • This 1.25” diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes.
    • Inserts into 1.25” focusers or visual backs. Accepts standard 1.25” eyepieces.
  • OVL 2" Erecting Diagonal

    Price £130.00

    2" Erecting Prism

    CNC machined and black anodised barrels

    45 degree angled.
    Complete with 1.25" adaptor.
    Brass compression rings.
    Threaded for 2" filters.
    Fully Multi-coated

  • This item incorporates Baaders innovative Clicklock system for use with 2" eyepieces, insert the clamp into your scope and then use the extra strong click lock to hold eyepieces safely and securely with the option to swiftly remove and insert eyepieces easily.

  • Sky-Watcher 45°-90°...

    Price £39.99

    This convenient mirror diagonal can easily be switched between 45° and 90° viewing , providing comfortable viewing for all observational angle.

  • Sky-Watcher 1.25"...

    Price £79.95

    The mirrors inside these diagonals have undergone a special high-reflectivity multi-coating process, allowing them to reflect 99% of the precious gathered starlight, providing exceptional brightness and contrast.  (Standard diagonals typically reflect 90-95% of light).

    • This Baader 2" Clicklock Adapter is designed specifically for all Telescopes using the Large 3.25" SCT Thread.
    • Gives a full 2" aperature. 
    • The Baader 2" Clicklock Adapter locks eyepieces and accessories into place with a simple twist.
  • The mirrors inside these diagonals have undergone a special high-reflectivity multi-coating process, allowing them to reflect 99% of the precious gathered starlight, providing exceptional brightness and contrast.  (Standard diagonals typically reflect 90-95% of light).

  • A Visual Back is a metal adapter that screws onto the standard rear cell threads of Schmidt-Cassegrain and Maksutov-Cassegrain telescopes and accepts 1.25” accessories, including diagonals, eyepieces (for straight-through viewing), Barlows, webcams, and any other accessory with a 1.25” insert barrel.