Founded in April 1999 by Dr. Robin Cantor, STAR Cryoelectronics is a leading worldwide supplier of SQUID sensors and related readout electronics, cryogenic systems, and offers foundry services for superconducting thin-film device fabrication. STAR Cryoelectronics develops, manufactures and markets ultra-sensitive Superconducting QUantum Interference Device (SQUID) sensors based on low- and high-temperature superconductors and related PC-based SQUID control electronics, transition edge sensor (TES) and superconducting tunnel junction (STJ) X-ray detectors, cryogen-free adiabatic demagnetization refrigerator (ADR) cryostats, and X-ray spectroscopy systems based on multi-pixel arrays of TES or STJ detectors for X-ray microanalysis in conjunction with a scanning electron microscope (SEM) or X-ray absorption spectroscopy at synchrotron soft X-ray beamlines.