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. M42 9mm Spacer Ring
    AUD $15.00

    In Stock

    9mm M42 Spacer Ring Learn More
  2. M42 8mm Spacer Ring
    AUD $15.00

    In Stock

    M42 8mm Spacer Ring Learn More
  3. M42 4mm Spacer Ring
    AUD $15.00

    In Stock

    M42 4mm Spacer Ring Learn More
  4. M42 12mm Spacer Ring
    AUD $15.00

    In Stock

    M42 12mm Spacer Ring Learn More
  5. Sky-Watcher Shutter Release Snap Cable C3 Canon EOS 1D/5D7D/10D-70D
    AUD $19.00

    Backorder Available

    • Compatible With E-3 Type Remote Control Terminal
    • Electronic Shutter Release Cable
    • Connect Your DSLR Camera to Sky-Watcher Computerised Mount
    • 5 Years Australian Manufacturer Warranty
    Learn More
  6. 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
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  7. 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
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  8. Celestron HD Pro Wedge for CPC 800/925/1100
    AUD $999.00

    Backorder Available

    • Celestron's HD Pro Wedge is designed to support our fork mounted Schmidt Cassegrain Telescopes up to 11"
    • The HD Pro Wedge provides a heavy duty, stable platform that is perfect for astroimaging and guarantees minimal vibration
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  9. Celestron Reducer Lens 0.7x EdgeHD 8 Inch
    AUD $749.00

    Backorder Available

    • The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 800 one full f-stop faster than f/10, doubling the equivalent exposure at f/10
    • 4-element lens design
    • Maintains similar flat-field performance as native EdgeHD optical design
    • Increases field of view by 43% (double by area) to better capture wide field images
    • Optimized for APS-C sized sensors, including most DSLR cameras and Nightscape CCD cameras
    • Provides generous 105 mm back focus to accomodate additional accessories and a wide variety of cameras
    • Compatible with EdgeHD 800 T-Adapter
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  10. Celestron Reducer Lens 0.7x EdgeHD - 11 Inch
    AUD $2,199.00

    Backorder Available

    • The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 1100 one full F-Stop faster than f/10, reducing your exposure time by half to capture the same brightness of object
    • 5-element lens design
    • Maintains similar flat-field performance as native EdgeHD optical design
    • Increases field of view by 43% to better capture wide field images
    • Threads directly onto the 3.25" threads of the EdgeHD which reduces mechanical vignetting and allows for use with larger (full frame) sensors and Off-Axis Guiders
    • Maintains the identical back focus when used at f/10 and provides generous back focus to accommodate additional accessories and wide variety of cameras
    • Allows use of existing EdgeHD T-Adapters with or without the Reducer Lens
    Learn More

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