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. 25 Red 1.25 Inch
  2. 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
  3. Sirius Optics Colour Filter No. 82A Light Blue 1.25 Inch
  4. 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
  5. 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
  6. 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
  7. Sirius Optics Variable T-Adapter for SCT
    AUD $49.00

    In Stock

    • Standard SCT Thread
    • M42 T-Thread
    Learn More
  8. Sirius Optics Vixen Dovetail 18cm with Slotted 0.25 Inch Holes
  9. M42 5mm Spacer Ring
    AUD $15.00

    In Stock

    M42 x 0.75mm Aluminium Alloy Extension Spacer Ring for telescope photography. This 5mm spacer can help you achieve precise back-focus spacing in your imaging train.

    Learn More
  10. Sirius Optics Colour Filter No. 56 Light Green

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