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. Celestron Narrow Dovetail Bar Kit for 8 Inch Cassegrain OTAs (CG5)
    AUD $69.99

    In Stock

    • Fits pre-drilled holes in the front and rear cells of current 8” Schmidt-Cassegrain and 8” EdgeHD Optical tubes
    • Aluminum bar with orange anodizing provides a sturdy mounting platform.
    • Easy to install and comes complete with all necessary hardware
    Learn More
  2. Celestron Narrow Dovetail Bar Kit for 9.25in Cassegrain OTAs (CG5)
    AUD $74.99

    In Stock

    • Fits pre-drilled holes in the front and rear cells of current 9.25” Schmidt-Cassegrain and 9.25” EdgeHD Optical tubes
    • Aluminum bar with orange anodizing provides a sturdy mounting platform.
    • Easy to install and comes complete with all necessary hardware
    Learn More
  3. Celestron Narrow Dovetail Bar Kit for 11 inch Cassegrain OTAs (CG5)
    AUD $79.99

    In Stock

    • Fits pre-drilled holes in the front and rear cells of current 11” Schmidt-Cassegrain and11” EdgeHD Optical tubes
    • Aluminum bar with orange anodizing provides a sturdy mounting platform.
    • Easy to install and comes complete with all necessary hardware
    Learn More
  4. WW Astro dew heater 20 cm for for large 2 inch eyepiece or finderscope
    AUD $45.00

    In Stock

    Heated dew strap for eyepiece.

    NOTE: Sirius Optics recommends that any dew heater strap or heated dew shield be connected to a dual channel dew controller and not directly to 12V.

    This allows the user to regulate the current and temperature of the dew heater strap or dew shield. 

    The recommended control unit is the Astrozap Dual Channel Dew Controller (Product No. 124474)

    Learn More
  5. Socket Cap Bolt 1/4 Inch UNC (20tpi) 3/4 Inch Long
  6. Socket Cap Bolt M5 20mm
    AUD $2.00

    In Stock

  7. Socket Cap Bolt M5 30mm
    AUD $2.00

    In Stock

  8. IEC Mains Power Lead
    AUD $8.95

    In Stock

    • 1.8 metres long
    • Earthed
    • SAA approved

    Learn More
  9. Sirius Optics Rocket Dust Blower
    AUD $9.95

    In Stock

    Ditch tiny dust blowers in cheap cleaning kits and blast off with this large cool rocket dust blower.

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  10. The Moon: A Celebration of Our Celestial Neighbour by Royal Observatory Greenwich
    AUD $45.00

    In Stock

    Marking the 50th anniversary of Neil Armstrong's `small step' this beautiful book explores people's fascination with our only natural satellite.

    Learn More

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