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 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
  2. Sirius Optics Plossl 40mm Eyepiece 1.25 Inch
  3. Sirius Optics Colour Filter No. 58 Green 1.25 Inch
  4. Sirius Optics Colour Filter No. 25 Red 1.25 Inch
  5. 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
  6. Sirius Optics Colour Filter No. 82A Light Blue 1.25 Inch
  7. Sirius Optics Colour Filter No. 38A Blue 1.25 Inch
    AUD $19.00

    In Stock

    • Fits 1.25" eyepieces

    Enhances:

    • Clouds and atmospheric features of Venus
    • Atmospheric clouds and polar ice caps on Mars
    • Cloud belts and moon transits of Jupiter
    • Cloud belts on Saturn
    Learn More
  8. Sirius Optics M48 Male To M42 Female Adapter
    AUD $19.00

    In Stock

    Slimline adapter with M48 male thread on one side and M42 female thread on the other. Learn More
  9. Sirius Optics Slim Profile 2 Inch to 1.25 Inch Eyepiece Holder
    AUD $29.00

    In Stock

    For use with some 2" Barlow lenses that have a slot for the thumbscrew. Learn More
  10. Sirius Optics 2 Inch to 1.25 Inch Eyepiece Adapter Long Profile
    AUD $49.00

    In Stock

    2" to1.25" adapter for eyepieces. Learn More

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