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 $29.00In Stock
M42 threaded T-adapter with 1.25" barrell.
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AUD $29.00In Stock
T-ring with M42 thread Learn More -
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 $75.00In Stock
This variable projection camera adapter allows you to take photos through a slim 1.25" eyepiece. Use with a M42 T-ring.
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AUD $39.00In Stock
Canon EOS bayonet fitting T-ring with M42 thread. This will fit all traditional EOS EF camera mounts.
NOTE: Not suitable for Canon EOS mirrorless cameras use EF-M adapter for canon mirrorless cameras.
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AUD $29.00In Stock
M42 to 2" T-adapter for use with M42 T-rings. Learn More -
AUD $39.00In Stock
T-ring with M42 thread Learn More -
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AUD $90.00In Stock
A large, extendable T-adapter with 2" barrell and M42 male thread. Learn More
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)
