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 StarPointer Finderscope
    AUD $39.99

    In Stock

    • The StarPointer Finderscope adds “point and look” functionality to any telescope!
    • This red dot finder keeps the sky right-side up, matching what you see with your unaided eyes
    • The adjustable red dot is bright enough to see day or night
    • Attaches to just about any telescope thanks to the small footprint, even works great with astronomical binoculars and spotting scopes
    • Includes mounting base and a long-lasting CR2032 3V battery
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  2. Sirius Optics Cheshire Collimator Long
  3. Sirius Optics Red Dot Finder Synta Support
  4. Sirius Optics Vixen Dovetail 18cm with Slotted 0.25 Inch Holes
  5. Sirius Optics ND96 0.9 Neutral Density Moon Filter 2 Inch
    AUD $39.00

    In Stock

    • For use with 2” 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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  6. Celestron 1.25 Inch 90 Degree Prism Star Diagonal
    AUD $84.99

    In Stock

    • Fits telescopes with 1.25” focusers or visual backs, 90° viewing angle, best for observing objects overhead
    • Accepts standard 1.25” eyepieces, Barlow lenses, and other accessories with a 1.25” insert barrel
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  7. Sirius Optics 15mm 68 Degree Long Eye Relief Eyepiece
    AUD $99.00

    In Stock

    The Sirius Optics 15mm 68° WALER eyepiece delivers a wide-angle field of view with generous long eye relief, making it ideal for comfortable extended viewing sessions—especially for eyeglass wearers. Enjoy sharp, immersive views without the eye placement sensitivity common in shorter focal length designs.

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  8. Sirius Optics 20mm 68 Degree Long Eye Relief Eyepiece
  9. 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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  10. Sirius Optics 1.25 Inch to M48 Adapter

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