This is the Baader T-ring that is used to connect Canon EOS DSLR cameras onto the Astro T-2 system. All Baader wide T-rings have an S52 dovetail in addition to the inserted T-2 ring, allowing the T-ring to be modified to an M48 female thread using the S52 / M48 adapter or to use the S52 barrel without the T-2 reduction. With the S52 / M68 adapter, the wide T-ring can be directly attached to an M68 male thread to securely fasten your camera to the widest possible aperture.

All Baader wide T-rings can also be directly adapted to a Universal Filter Changer (UFC) with the optional Baader UFC S52 dovetail camera adapter, in order to change different filter sizes directly in front of the camera sensor.

The illumination of the camera chips improve significantly with the wide T-ring, mainly due to the larger clear aperture. The thread on the camera side is Canon EOS Bayonet. On the telescope side, it is S52 dovetail clamp including S52 / T-2 internal thread with 0.75 mm pitch.