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 $20.00In 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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AUD $19.00In Stock
Slimline adapter with M48 male thread on one side and M42 female thread on the other. Learn More -
AUD $29.00In Stock
For use with some 2" Barlow lenses that have a slot for the thumbscrew. Learn More -
AUD $49.00In Stock
2" to1.25" adapter for eyepieces. Learn More -
AUD $49.00In Stock
- Standard SCT Thread
- M42 T-Thread
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AUD $15.00In Stock
M42 x 0.75mm Aluminium Alloy Extension Spacer Ring for telescope photography. This 5mm spacer can help you achieve precise back-focus spacing in your imaging train.
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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
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