Baader Nosepiece - 1.25" /T-2

Its sole purpose is to adapt accessories with a female T-2 (M42x0.75) thread for use in a standard 1.25" focuser or visual back. This allows you to create a secure, threaded connection between your camera or T-2 accessory and your telescope.

The male T-2 threads on this nosepiece connect directly to any female T-2 port. This makes it the starting point for building an optical train using components like the Baader T-2 Quick Changer, T-2 diagonals, or T-2 extension tubes, and then inserting the entire assembly into a 1.25" focuser.

Yes. Most ZWO cameras come with a female T-2 thread on the camera body (often under a 1.25" nosepiece they include). You can thread this Baader nosepiece directly onto the camera's T-2 threads for a more rigid connection than the stock slip-fit adapter.

The 1.25" barrel format is the limiting factor. For cameras with small sensors (like planetary or guide cameras, typically 1/3" to 1/2" format), vignetting is not an issue. However, if you adapt a camera with a larger APS-C or full-frame sensor, the 1.25" barrel will significantly vignette the image, cutting off the corners. For larger sensors, a 2" nosepiece is required.

Yes, this is a key component for it. You would typically use a T-2 eyepiece holder to clamp a 1.25" eyepiece, and then use T-2 extension tubes to set the projection distance. This nosepiece would then allow you to insert the entire eyepiece projection assembly into your SCT's 1.25" visual back.

Yes, absolutely. The Baader T-2 prism and mirror diagonals have female T-2 threads on the telescope side. This nosepiece threads directly into the diagonal, allowing you to use your high-quality T-2 diagonal in any telescope with a 1.25" focuser.