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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 Colour Filter No. 23A Light Red 1.25 Inch
    AUD $19.00

    In Stock

    • For 1.25" eyepieces
    • Polar regions and Cloud belts of Saturn and Jupiter
    • Surface Maria and plains on Mars
    • Sky/planet contrast for Mercury and Venus
    Learn More
  2. Sirius Optics Deluxe Adjustable Eyepiece Projection Adapter with M42 Thread and 1.25 Inch Barrel
    AUD $75.00

    In Stock

    This variable projection camera adapter allows you to take photos through a slim 1.25" eyepiece. Use with a M42 T-ring.

    Learn More
  3. Sirius Optics 1 Inch Extension Tube with 1.25 Inch Barrel
  4. Sirius Optics Canon EOS T-Ring
    AUD $39.00

    In Stock

    Canon EOS bayonet fitting T-ring with M42 thread. This will fit all traditional EOS EF camera mounts.

    NOTE: Not suitable for Canon EOS mirrorless cameras use EF-M adapter for canon mirrorless cameras.

    Learn More
  5. Sirius Optics 2 Inch SCT Eyepiece Holder Female
    AUD $39.00

    In Stock

    2" SCT visual back Learn More
  6. Sirius Optics T-Adapter with M42 Thread to 2 Inch Barrel
    AUD $29.00

    In Stock

    M42 to 2" T-adapter for use with M42 T-rings. Learn More
  7. Sirius Optics Plossl 40mm Eyepiece 1.25 Inch
  8. Sirius Optics Colour Filter No. 58 Green 1.25 Inch
  9. Sirius Optics Colour Filter No. 25 Red 1.25 Inch
  10. Sirius Optics Colour Filter No. 80A Medium Blue 1.25 Inch
    AUD $19.00

    In Stock

    • For 1.25" eyepieces

    Enhances:

    • Details of cloud belts and Great Red Spot on Jupiter
    • Atmospheric clouds and polar caps on Mars
    • Feature contrast on the Moon by reducing glare
    • Cloud belts and rings on Saturn
    Learn More

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