First Space Flight of TESs with the Micro-X Rocket: Performance and Projections

Micro-X had its maiden flight in the summer of 2018, representing the first operation of Transition Edge Sensors in space. This rocket borne instrument uses these cryogenic microcalorimeters to perform imaging spectroscopy in the soft X-ray band. In this talk, we present the in-flight performance of these detectors. Additionally, the detector performance from that flight is compared to instrument projections for its science goals, including imaging observations of the Cassiopiea A supernova remnant and wide field of view observations of the Milky Way dark matter halo to search for keV scale decaying dark matter, such as a sterile neutrino.