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.
-
-
-
AUD $15.00In Stock
M42 x 0.75mm Aluminium Alloy Extension Spacer Ring for telescope photography. This 15mm spacer can help you achieve precise back-focus spacing in your imaging train.
Learn More -
AUD $15.00In 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 5mm 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.
Learn More -
-
AUD $59.00In Stock
Combine with a suitable TLS-APO Adapter and a DSLR for Digiscoping with a Swarovski Spotting Scope
Learn More -
AUD $99.00In Stock
Suitable for connecting Nikon lens and ZWO 1.25”/31mm/36mm filter wheel
Learn More -
AUD $39.00In Stock
Fine-tune your imaging train's back-focus distance with this 11-piece M42 stainless steel spacer ring set, featuring thicknesses from 0.02 mm to 1.0 mm. Combine multiple shims to achieve precise spacing adjustments down to hundredths of a millimetre—essential for eliminating star elongation and field curvature when using field flatteners, coma correctors, and reducers. Durable 304 stainless steel construction ensures each ring stays flat and rigid for years of reliable use.
Learn More -
AUD $39.00
In Stock
M48 11-Piece Stainless Steel Spacing Shim Set for precision back-focus adjustment in astrophotography. Includes shims ranging from 0.02mm to 1.0mm thickness, allowing fine-tuned spacing between your telescope and camera for optimal image quality.
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)
