Baader zero-tolerance protective Canon DSLR T-Ring T-2/M48 and 2"

Description Today's large sensor digital SLRs and advanced imaging techniques enable amateurs to take spectacular high resolution and long exposure images that push the limits of modern telescope optics. Up until now, the only means of coupling a DSLR to the telescope relies on the use of a standard mass produced camera T-Ring. Unfortunately, T-rings have failed to evolve with the demanding needs of the advanced astro-imager: The use of 42mm T-thread for the coupling causes a choke-point in the imaging train (typcially 38mm internal diameter), resulting in vignetting in fast systems. High resolution digital image sensors and their protective glass covers are highly vulnerable to dust that can enter the body each time the camera is coupled/uncoupled, or in open systems, particularly if the camera has been modified for full-spectrum use. These commonly available T-rings are mass-produced for generic camera use, with general manufacturing tolerances and design, which result in a potentia