Spare Parts & Upgrades
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AUD $74.99In Stock
- Threads onto the rear of Celestron 5” - 11” Schmidt-Cassegrain telescopes.
- Accepts any accessory with a 1.25” insert barrel, including diagonals, eyepieces, Barlows, and other adapters
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AUD $895.00In Stock
- Enables automatic alignment of your Celestron computerized telescope
- No need to identify or locate any star in the sky–StarSense automatically aligns your telescope, so you can begin observing in minutes
- Aligns in 3 minutes or less
- Provides advanced mount modeling—align on numerous stars throughout the sky for extremely precise GoTo pointing accuracy
- StarSense hand controller included
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AUD $424.99Backorder Available
Out of stock
- Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings
- Provides a 90° viewing angle, perfect for more comfortable viewing through refractor and Cassegrain-type telescopes
- 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece
- Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment
- Includes a stepdown adapter, so the diagonal accepts eyepieces, Barlow lenses, threaded filters, and other accessories in both 2” and 1.25” sizes
- Two interchangeable adapters allow you to switch between a Schmidt-Cassegrain thread adapter and a 2” barrel adapter so you can use this diagonal with a wide variety of telescopes
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Why buy from Sirius Optics
Queensland's largest telescope showroom and warehouse
Run by astronomers and nature lovers, not sales people
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