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 12mm Flat Field Eyepiece
    AUD $129.00

    In Stock

    The flatfield eyepieces are ideal all-rounders for deep sky and also planets with an excellent sharpness performance.

    The eyepieces have a very high quality coating and offer excellent sharpness in the field so that they are equally suitable for the deep-sky observation of nebulae and galaxies but also good for the moon and planets. The eyepieces are mutually parfocal, so that refocusing the eyepiece is not necessary.

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  2. Sirius Optics 8-24mm Zoom Eyepiece 1.25 Inch
  3. Sirius 5x Barlow with M42 Thread
    AUD $59.00

    In Stock

    The Sirius 5x Barlow with M42 Thread dramatically increases the magnification of your existing eyepieces, allowing you to reveal fine lunar details and planetary features like Jupiter's cloud bands with stunning clarity. Its standard M42 thread ensures easy compatibility with a wide range of telescopes and imaging setups, making it an essential addition to any astronomer's accessory kit.

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  4. Sirius Optics 9mm 68 Degree Long Eye Relief Eyepiece
  5. Sirius 60-65 Degree WA 20mm Eyepiece 1.25 Inch
    AUD $49.00

    In Stock

    Wide angle, fully multi-coated Learn More
  6. Sirius Optics Plossl 30mm Eyepiece 1.25 Inch
  7. Sirius Optics Plossl 12.5mm Eyepiece 1.25 Inch
  8. Sirius Optics 70 Deg 20mm Eyepiece 1.25 Inch
  9. Sirius 3x Barlow Fully Multi-Coated with M42 Thread
    AUD $59.00

    In Stock

    The Sirius 3x Barlow lens triples your telescope's magnification, letting you explore lunar craters and planetary details with stunning clarity. Its fully multi-coated, 3-element apochromatic design minimizes chromatic aberration for crisp, sharp images, while the built-in M42 thread doubles as a T-adapter for easy DSLR or SLR camera attachment.

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  10. Sirius Optics 20mm 68 Degree Long Eye Relief Eyepiece

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