Alpine Astronomical offers the Baader T-2 Extension & Lock Ring Set to give you a versatile solution for your astrophotography rig. Compatible with their entire T-2 Astro modular accessory system, the set converts a standard male (external) T-2 thread into both male and female (external and internal) threads to give you more mounting options. The third component is a locking ring that allows you to set position of a camera or imager and lock it into position so it won't shift or accidentally rotate during use.
EAN: 4047825007339