Journal Article

The Ultraviolet Spectrograph on NASA’s Juno Mission

Rhoad, Cherie L., Davis, Michael W., Bonfond, Bertrand, Denis, François, Dirks, Gregory J., Sykes, Henry, Martin, Adrian, Vallerga, John V., Persyn, Steven C., Siegmund, Oswald H. W., Slater, David C., Walther, Brandon C., Tumlinson, Jessica, Persson, Kristian B., Beshears, John, Sawka, Anthony O., Gladstone, G. Randall, Cravens, James P., Lockhart, Walter, Eterno, John S., Versteeg, Maarten H., Young, Michael K., Gérard, J.-C., Jackson, Matthew W., Raffanti, Rick, Greathouse, Thomas K., Winters, Gregory S., Trantham, Bradley J., Wilcox, Philip M., Grodent, Denis C., Piepgrass, Benjamin M., Klar, Robert A., Marquet, Benoit

2017

Overview

The ultraviolet spectrograph instrument on the Juno mission (Juno-UVS) is a long-slit imaging spectrograph designed to observe and characterize Jupiter’s far-ultraviolet (FUV) auroral emissions. These observations will be coordinated and correlated with those from Juno’s other remote sensing instruments and used to place in situ measurements made by Juno’s particles and fields instruments into a global context, relating the local data with events occurring in more distant regions of Jupiter’s magnetosphere. Juno-UVS is based on a series of imaging FUV spectrographs currently in flight—the two Alice instruments on the Rosetta and New Horizons missions, and the Lyman Alpha Mapping Project on the Lunar Reconnaissance Orbiter mission. However, Juno-UVS has several important modifications, including (1) a scan mirror (for targeting specific auroral features), (2) extensive shielding (for mitigation of electronics and data quality degradation by energetic particles), and (3) a cross delay line microchannel plate detector (for both faster photon counting and improved spatial resolution). This paper describes the science objectives, design, and initial performance of the Juno-UVS.

• Publisher: Springer Netherlands,Springer Nature B.V,Springer Science & Business Media B.V
• Subject: Aerospace Technology and Astronautics / Astrophysics and Astroparticles / Auroral emissions / Aérospatiale, astronomie & astrophysique / Data imaging / Energetic particles / Far-ultraviolet / Frequencies / Government agencies / In situ measurement / Juno / Jupiter / Jupiter probes / LISRI / Lunar spacecraft / Magnetosphere / Magnetospheres / New Horizons mission / Physical, chemical, mathematical & earth Sciences / Physics / Physics and Astronomy / Physique, chimie, mathématiques & sciences de la terre / Planetary magnetospheres / Planetology / Remote sensing / Rosetta mission / Shielding / Space exploration / Space Exploration and Astronautics / Space missions / Space science, astronomy & astrophysics / Space Sciences (including Extraterrestrial Physics / Spatial resolution / Spectrograph / Spectrographs / Ultraviolet astronomy / Ultraviolet emission