Post-delivery calibration of the JUICE ultraviolet spectrograph (JUICE-UVS)

Michael W. Davis; Maarten H. Versteeg; G. Randall Gladstone; Sue Ferrell; Philippa M. Molyneux; Steven C. Persyn; Kurt D. Retherford

doi:10.1117/12.2675923

5 October 2023 Post-delivery calibration of the JUICE ultraviolet spectrograph (JUICE-UVS)

Michael W. Davis, Maarten H. Versteeg, G. Randall Gladstone, Sue Ferrell, Philippa M. Molyneux, Steven C. Persyn, Kurt D. Retherford

Author Affiliations +

Proceedings Volume 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII; 126780X (2023) https://doi.org/10.1117/12.2675923
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

We describe the post-delivery performance testing of the JUpiter ICy moons Explorer Ultraviolet Spectrograph (JUICE-UVS). JUICE-UVS is a modest power (8 W) ultraviolet imaging spectrograph that is the fifth in a series of Alice/UVS instruments built by Southwest Research Institute (SwRI). JUICE-UVS covers a 50-204 nm bandpass with 0.4 nm spectral resolution over a 7.5° field of view with better than 0.3° spatial resolution. JUICE-UVS will explore the Galilean satellites, examine the dynamics of Jupiter’s upper atmosphere from pole to equator, and investigate the Jupiter-Io connection through observations of the Io torus. JUICE-UVS underwent an extensive ground testing campaign at strategic points during the JUICE integration-and-testing over the course of four years and four countries on three continents. High voltage operations were enabled via the usage of specially designed Optical Ground Support Equipment (OGSE) that attached to the spacecraft for key tests. All performance requirements continue to be met, and there is no observable performance degradation after all spacecraft environmental testing and transport activities. In particular, the microchannel plate detector has similar sensitivity and dark rates as measured during pre-delivery testing. Testing of optical witness samples removed during key tests indicates the instrument optical throughput is unchanged. In-flight calibrations planned for shortly after launch will further confirm the performance of JUICE-UVS.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Michael W. Davis, Maarten H. Versteeg, G. Randall Gladstone, Sue Ferrell, Philippa M. Molyneux, Steven C. Persyn, and Kurt D. Retherford "Post-delivery calibration of the JUICE ultraviolet spectrograph (JUICE-UVS)", Proc. SPIE 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII, 126780X (5 October 2023); https://doi.org/10.1117/12.2675923

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