This listing is for one Rayonix / Spectral Instruments / MAR model SX165 / 1100S High Performance CCD X-Ray Detector. "The SX165 features a round, 165 mm diameter active area, and a versatile, high resolution CCD chip. It is the ideal X-ray detector for research applications with both synchrotrons and rotating anode X-ray sources." Set includes the Polycold cryo compressor / interconnect lines and control cable / trigger cable, along with some mounting brackets. We believe this was set up for Crystallography / Small Angle X-ray Scattering (SAXS) use and was told it will not detect visible light. We contacted both Spectral Instruments and Rayonix for support / software / interface card, and was told they don't sell these items and we are on our own. I'm unsure why they no longer support this set, but please keep that in mind. You'll be on your own getting it up and running most likely. With that being said, we are selling the set-up as-is, with no guarantees, refunds or returns. Nothing beyond what is shown in the photos is included.