Baader M48 extension tube (Choose Size)
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Used to adjust the working distance of larger cameras and similar accessories with M48 thread
Modern cameras are usually characterised by extremely short optical heights, in order to be able to be mounted on various telescope constructions. The old T-2 standard with 5mm thread depth is a hindrance to this. To take care of this new development, all new Baader T-2 and M48 parts are delivered with the new 3 mm standard.
The 30mm and 40mm extension tubs double as 2" nosepieces, and have Safety Kerfs as shown in the photos.