The UHV (STM) JT (Joule Thomson) Cryostat is a JT stage (< 1 K) mounted on an ultra-low loss helium bath cryostat with a nitrogen shield and two vapor cooled radiation shields for added performance. The system was initially conceptualized for STM, TEM and AFM measurements, whereby ultra-low vibrations are required for atomic resolution. The JT stage allows the system to work down to 450 mK (3He) or 1.0 K (4He), with little to no additional helium consumption. With its high performance and compact design, this system is a staple of the SPM community. As with all our systems, the UHV JT Cryostats can be modified to best suit your individual needs.