1. Thread Type: M42x0.75 Male thread / SCT Female thread (2" 24TPI)
2. The T-Adapter attaches an SLR or DSLR camera to a Schmidt-Cassegrain telescope for prime focus photography. Threads on to the rear cell of Schmidt-Cassegrain telescopes. T-threads accept camera brand specific T-Ring (sold separately). 
3. Compatible Telescope of Adapter: Celestron 5SE/6SE/8SE，C5/C8/C9.25/C11/C14 and all Schmidt-Cassegrain telescope (2", 24TPI)
4. Precision made of metal: The adapter is made of aircraft-grade aluminum and CNC precision machining. The all-metal parts look quite durable.
5. The adapter ring with T-ring is super easy to use. Put the telescope into the extension tube, then screw the T-ring and T-ring adapter ring together with the extension tube, and then connect the camera to the telescope.
6. Perfect visual imaging experience: The internal matting of the T adapter has been blackened and oxidized; it can avoid the interference of stray light and achieve better imaging effects.

Specification:

Material: Aluminum Alloy 
Male Thread: M42 * 0.75mm 
Female Thread: M50 * 1mm 
Colour: Black

Package Include:
1 x SCT Female To M42 Male Threads T-tube