Telescopes & Astronomy
Beginner Telescopes
Buying your first telescope? Browse our curated selection of beginner telescopes.
Shop by Use
What will you use your telescope for? Explore the many uses of different types of telescopes.
Shop by Type
Choose your telescope by optical design or learn more about the different types of telescopes.
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AUD $59.00Backorder Available
Counterweight to suit any mount that has a 19 mm diameter shaft.
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AUD $54.99Backorder Available
- The Celestron Universal T-Adapter connects a DSLR or SLR camera to a refractor for prime focus photography
- The adapter’s chrome barrel slides into any focuser that accepts 1.25” accessories
- T-Threads accept camera brand specific T-Ring (sold separately)
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AUD $5.00Backorder Available
O Ring - 50 mm Spotting Scope
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AUD $12.95Backorder Available
Led power indicator
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8 DC plugs: 2.35 x 0.75, 3.5 x 1.35, 4 x 1.7
5.5 x 1.5, 5 x 2.1, 5.5 x 2.5, 2.5mm, 3.5mm. -
AUD $549.00Backorder Available
The Celestron Smart Dewheater Controller 2X uses real-time data and provides just enough power for your heaters to prevent dew from forming, prolonging battery life.
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AUD $999.00Backorder Available
The Celestron Smart Dewheater Controller 4X uses real-time data and provides just enough power for your heaters to prevent dew from forming, prolonging battery life.
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AUD $225.00Backorder Available
The Celestron Dew Heater Ring is the ideal dew prevention solution for your Celestron telescope.
The Dew Heater Ring permanently mounts to your 11" Celestron Schmidt-Cassegrain (manufactured 2006 or later), EdgeHD, and RASA optical tube, replacing your retaining ring so you'll never be caught without it.
The installation process is quick and easy (follow the manual for instructions).
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AUD $179.99Backorder Available
- This Aluminum Dew Shield with Cover Cap fits all 6” Celestron Schmidt-Cassegrain telescope tubes. It’s an essential accessory that protects the tube in the field. The dew shield reduces radiative cooling of the Schmidt corrector lens to the night sky, keeping the lens below the dew point longer and preventing dew from forming on the lens. The Aluminum Dew Shield also increases image contrast by blocking stray light from entering the telescope for better viewing and astroimaging. Use the Aluminum Dew Shield on your 6” Schmidt Cassegrain telescope tube confidently, knowing it was created for your exact instrument.
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AUD $79.00Backorder Available
The Celestron Dew Heater Ring is the ideal dew prevention solution for your Celestron telescope.
The Dew Heater Ring permanently mounts to your 6" Celestron Schmidt-Cassegrain optical tube, replacing your retaining ring, so you'll never be caught without it.
The installation process is quick and easy (follow the manual for instructions).
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AUD $424.99Backorder Available
- Fits 11” Schmidt-Cassegrain, EdgeHD, and RASA telescope tubes
- Helps prevent dew formation on the Schmidt corrector lens
- Prevents off-axis glare from entering the optical system
- Rigid body with a velvet-lined interior surface to reduce stray light
- Two adjustable clips for easy installation and disassembly
- Cable management at the base of the shield —perfect for using the Fastar/Hyperstar configuration or using in conjunction with the Celestron Dew Heater Rings
- An included cover cap keeps your telescope free from dust when not in use
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)
