Telescopes & Astronomy

The 2 Inch to M48 T Adapter lets you easily connect M48 T-rings to any standard 2-inch eyepiece holder, bridging your telescope and camera for stunning astrophotography. Built from durable aluminum, this lightweight adapter ensures a secure, precise fit so you can focus on capturing the night sky.

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.

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.

The Sirius Optics M48 T-ring for Nikon lets you seamlessly connect your Nikon DSLR to any telescope with an M48 thread, making it easy to dive into astrophotography. Designed with full-frame sensors in mind, the wide M48 connection minimizes vignetting for cleaner, edge-to-edge images of the night sky.

Combine with a suitable TLS-APO Adapter and a DSLR for Digiscoping with a Swarovski Spotting Scope

Suitable for connecting Nikon lens and ZWO 1.25”/31mm/36mm filter wheel

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.