Telescopes & Astronomy

Beginner Telescopes
Kids' Telescope

Buying your first telescope? Browse our curated selection of beginner telescopes.

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Telescope Use

What will you use your telescope for? Explore the many uses of different types of telescopes.

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Cassegrain Telescope

Choose your telescope by optical design or learn more about the different types of telescopes.

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10 Item(s)

  1. Celestron 1.25 Inch Visual Back for SCT
    AUD $74.99

    In Stock

    • Threads onto the rear of Celestron 5” - 11” Schmidt-Cassegrain telescopes.
    • Accepts any accessory with a 1.25” insert barrel, including diagonals, eyepieces, Barlows, and other adapters
    Learn More
  2. Celestron Starsense AutoAlign for Sky-Watcher and Saxon Mounts
    AUD $1,049.00

    In Stock

    • Automatically align your computerized Sky-Watcher mount with StarSense
    • No need to identify or locate any star in the sky – StarSense will automatically align your telescope, so you can begin observing in minutes. Plug and play compatibility (see compatibility list).
    • Replaces the SynScan hand control, uses the Celestron StarSense hand control and StarSense camera. Comes with mounting bracket that is compatible with most Celestron and Sky-Watcher optical tubes.
    • 3 AUX port accessories: Supports StarSense and optional GPS accessory.  Lightweight and easy to attach with the included tripod strap.
    Learn More
  3. Celestron Polar Finderscope for CGX and CGX-L
    AUD $324.99

    In Stock

    • Custom made for CGX and CGX-L Mounts
    • Adjustable bracket angle for best accessibility
    • 6x magnification
    • Simple reticle map easily locates the celestial pole without the need to reference an app or location & time
    • Scope tilt is adjustable to allow for accurate polar alignment
    Learn More
  4. Celestron StarSense AutoAlign
    AUD $895.00

    Backorder Available

    • Enables automatic alignment of your Celestron computerized telescope
    • No need to identify or locate any star in the sky–StarSense automatically aligns your telescope, so you can begin observing in minutes
    • Aligns in 3 minutes or less
    • Provides advanced mount modeling—align on numerous stars throughout the sky for extremely precise GoTo pointing accuracy
    • StarSense hand controller included
    Learn More
  5. Celestron SkyPortal WiFi Module
    AUD $229.99

    Backorder Available

    • Align and control your telescope wirelessly using your smartphone or tablet and Celestron’s free SkyPortal app for iOS and Android devices
    • Tap any celestial object you see in the sky to identify it instantly. Tap again and your telescope slews to that object, centering it perfectly in the eyepiece.
    • Explore 100,000+ objects in SkyPortal’s database. While you observe, view astroimages and listen to audio descriptions for hundreds of the most popular objects including the planets, Orion Nebula, Hercules Globular Star Cluster, and more.
    • Sky Tour feature generates a list of all the best stars, galaxies and nebulae to view based on your exact time and location
    • WiFi module is compatible with all current Celestron computerized telescopes and select older models. Unit does not require batteries or external power.
    Learn More
  6. Celestron Auxiliary Port Splitter
    AUD $49.99

    Backorder Available

    • Create an extra auxiliary port on your Celestron computerized mount with this AUX Port Splitter
    • Two auxiliary ports are required to use accessories like the Celestron StarSense AutoAlign on telescopes with only one built-in AUX port
    • Adapter has two 6-pin auxiliary outputs and one 6-pin input
    Learn More
  7. Celestron SkySync GPS Accessory
    AUD $324.99

    Backorder Available

    • Upgrade your Celestron computerized telescope to GPS with SkySync
    • Improve the speed and accuracy of alignments with 16-channel GPS
    • Automatically updates the time and date
    • Plugs into the AUX port on the base of the telescope
    • Compatible for all non-GPS Celestron computerized telescopes
    Learn More
  8. Celestron Focuser Retrofit Kit for RASA 11
    AUD $59.00

    Backorder Available

    • Allows the user to replace the FeatherTouch MicroFocuser on the RASA 11 with a traditional focus knob for compatibility with the Celestron Focus Motor
    • When combined with the Focus Motor, this kit enables you to focus the RASA 11 using a computer or Celestron hand control for remote/hands-free astroimaging
    Learn More
  9. Celestron StarSense Hand Control
    AUD $295.00

    Backorder Available

    StarSense Hand Control is compatible with the StarSense AutoAlign accessory for use with Celestron computerized telescopes

    Learn More
  10. Celestron Dielectric Star Diagonal, 2 inch with Twist-lock
    AUD $424.99

    Backorder Available

    • Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings
    • Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes
    • 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece
    • Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment
    • Includes a stepdown adapter, so the diagonal accepts eyepieces, Barlow lenses, threaded filters, and other accessories in both 2” and 1.25” sizes
    • Two interchangeable adapters allow you to switch between a Schmidt-Cassegrain thread adapter and a 2” barrel adapter so you can use this diagonal with a wide variety of telescopes
    Learn More

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