Paper 13093-4
Paper 13093-4
Results of the JUICE ultraviolet spectrograph near-Earth commissioning
16 June 2024 • 09:30 - 09:50 Japan Standard Time | Room G414/415, North - 4F
Abstract
We present the results of the JUpiter ICy moons Explorer ultraviolet spectrograph (JUICE-UVS) near-earth commissioning. Near-earth commissioning activities included measurements of detector dark noise, optimizing detector HV level via observations of the interplanetary Lyman-alpha, and a “sky-spin” observation over the JUICE-UVS 7.5°-long slit while the spacecraft rolled about the high-gain antenna. Dark rates matched those measured on the ground. HV levels were nominal for the operational temperature. Observations with the high-spatial resolution aperture confirmed the sharpened focus when compared to nominal observations. The “sky-spin” observation passed through the galactic plane, observing many known UV-bright stars. These stars provide a rough estimate of instrument effective area that will be refined after JUICE passes >2 AU from the sun, enabling 3-axis stabilized pointed observations.
Presenter
Southwest Research Institute (United States)
Dr. Davis is an astrophysicist specializing in the design and testing of astronomical instruments. Dr. Davis has integrated and tested UV instrumentation for over 20 years, including the Big Dog Planetary Rocket payload (NASA sounding rocket flights 36.201 UL and 36.210 UL), the ALICE spectrograph for New Horizons, the LAMP spectrograph for LRO, and the UVS instruments for the Juno, JUICE, and Europa Clipper missions. He also supports optical design and test, extreme ultraviolet imaging, and low-res spectroscopy in the near-infrared. Dr. Davis has authored or co-authored over 70 technical papers in the fields of ultraviolet spectroscopy and astronomical instrumentation. Dr. Davis serves as a Standing Review Board member for multiple NASA missions as an optics and detector expert. Asteroid 205823 Michaeldavis is named in his honor.