Telescopes & Astronomy

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.

The Sirius Optics Nikon T-Ring features a standard M42 thread that lets you easily connect your Nikon DSLR camera to any telescope equipped with a T-adapter, making it an essential accessory for capturing stunning astrophotography images.

M42 threaded T-adapter with 1.25" barrell.

M42 x 0.75mm Aluminium Alloy Extension Spacer Ring for telescope photography. This 3mm 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 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.

This variable projection camera adapter allows you to take photos through a slim 1.25" eyepiece. Use with a M42 T-ring.

The Sirius Optics T-Adapter seamlessly connects your DSLR or mirrorless camera to any 2-inch focuser, visual back, or diagonal for prime-focus astrophotography. Featuring a standard M42 thread on one end and a 2-inch barrel on the other, it pairs with any compatible M42 T-ring to get you imaging through your telescope in seconds.

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.