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 20mm 68 Degree Long Eye Relief Eyepiece
  2. Dust Cover with M42 Male thread
    AUD $10.00

    In Stock

    Durable aluminium dust cap with M42 male thread. Learn More
  3. M48 30mm Spacer Ring
    AUD $20.00

    In Stock

    Getting your back-focus distance right is essential for sharp, well-corrected astrophotography and sometimes you need more than thin shims to bridge the gap. This M48 x 0.75mm aluminium alloy spacer ring provides 30mm of solid, threaded spacing to help you build out your imaging train with precision. Also available in various sizes to suit your specific setup requirements.

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  4. Sirius Optics 1.25 Inch to M48 Adapter
  5. 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
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  6. 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.

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  7. Sirius Optics ND96 0.9 Neutral Density Moon Filter 1.25 Inch
    AUD $19.00

    In Stock

    • For use with 1.25” eyepieces.
    • One of the essential eyepiece filters for visual astronomy.
    • Reduce glare from bright objects such as the Moon, Venus, and Jupiter.
    • Accentuate subtle detail for the Moon and planets
    • Polar ice caps of Mars in large telescopes
    • Limb hazes and terminator clouds of Mars
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  8. Sirius Optics 1 Inch Extension Tube with 1.25 Inch Barrel
  9. 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.

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  10. Sirius Optics 2 Inch SCT Eyepiece Holder Female
    AUD $39.00

    In Stock

    2" SCT visual back Learn More

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