Telescopes & Astronomy

T-ring with M42 thread.

T-Ring for Sony Alpha DSLR (A-Mount - Full Size DSLR). A "T-Ring" couples your SLR or DSLR camera body to a T-Adapter or other "T" threaded camera mount. 

• A piggyback ride for your camera!  Let your telescope do the driving while your camera takes beautiful wide-angle images of the sky.
• Use your own camera lenses to take photographs of the Milky Way, nebulae, the Moon, and more
• Attaches easily to the top rear of any Schmidt Cassegrain telescope in minutes

The Sirius Optics 2 Inch Variable Extension Tube features a standard 2" barrel and M42 male thread, allowing you to fine-tune your imaging distance for precise focus when connecting a camera to your telescope. Simply pair it with an M42 T-ring to attach your camera, and adjust the extension length to achieve optimal spacing for astrophotography through any 2" focuser or visual back.

The Sirius Optics T-Ring for Canon EF-M allows you to connect your Canon EOS-M mirrorless camera to any telescope or microscope equipped with a standard M42 T-thread adapter, opening up the world of astrophotography and microphotography with the gear you already own.

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 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.