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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  1. Sirius Optics 45 Degree Prism Diagonal 1.25 Inch
    AUD $60.00

    Backorder Available

     Easily add versatility to your astronomical telescope

    Great to convert your telescope for terrestrial viewing

    Suitable for refractor or catadioptric reflector telescopes

    See land images upright and non-mirrored

    45-degree angle design for comfortable viewing

    Attaches to any 1.25" eyepiece

    Learn More
  2. 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
  3. Celestron Luminos 7mm Eyepiece 1.25 Inch
    AUD $259.00

    Backorder Available

    • Enjoy wide 82º views with Celestron Luminos Eyepieces.
    • Retractable eyecup pops up when you need it, drops down when you don’t.
    • Sturdy anodized aluminum barrels are threaded for filters.
    • A rubber grip keeps the eyepiece securely in your hands, even when it’s cold or you have gloves on.
    Learn More
  4. Celestron RS232 Cable for NexStar
    AUD $50.00

    Backorder Available

    NOTE: Suitable for RJ9 hand controllers only, made before 2016.

    This cable is not compatible with later handsets.

    Later NXS-A handsets use USB Mini B to USB cables. Please type 125973 into our search bar to find the correct cable for later handsets.

    Learn More
  5. Celestron Off Axis Guider
    AUD $599.00

    Backorder Available

    • Most accurate way to guide – improved accuracy compared to using a separate guide scope
    • 12.5 mm multi-coated prism with aluminized backing for maximum reflectivity and illumination to the autoguider
    • Fixed-orientation helical focuser for easy, smooth and accurate autoguider focus
    • 48mm clear aperture supports full frame cameras without vignetting
    • Includes adapters with the correct spacing for DSLR cameras, Nightscape CCD and other popular astroimaging cameras
    • Ideal for Schmidt- Cassegrain and EdgeHD telescopes
    Learn More
  6. Sirius Optics Plossl 25mm Eyepiece 1.25 Inch
  7. Sirius Optics 1.25 Inch to 2 Inch Adapter
    AUD $29.00

    Backorder Available

    Use 2" eyepieces in a 1.25" diagonal or focuser. Learn More
  8. Celestron X-Cel LX 7mm Eyepiece 1.25 Inch
    AUD $164.99

    Backorder Available

    • X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system
    • Pop-up rubber eyeguards provide comfort and increase contrast.  Raise and lower with a simple twist.
    • A treaded rubber grip offers a no-slip grip, even with gloves on
    • 1.25” barrels are threaded to accept filters
    Learn More
  9. Celestron X-Cel LX 5mm Eyepiece 1.25 Inch
    AUD $164.99

    Backorder Available

    • X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens system
    • Pop-up rubber eyeguards provide comfort and increase contrast.  Raise and lower with a simple twist.
    • A treaded rubber grip offers a no-slip grip, even with gloves on
    • 1.25” barrels are threaded to accept filters
    Learn More
  10. 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

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