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 $54.00Backorder Available
saxon Counterweight for EQ2 Mount (3.5kg)
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AUD $424.99Backorder Available
- 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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AUD $295.00Backorder Available
StarSense Hand Control is compatible with the StarSense AutoAlign accessory for use with Celestron computerized telescopes
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AUD $2.00Backorder Available
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AUD $2.00Backorder Available
Made of Corrosion Resistant Stainless Steel
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AUD $19.00Backorder Available
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AUD $19.00Backorder Available
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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
Expert advice and lessons
Secure checkout with multiple payment options
30 day returns (T&Cs apply)
