Juno Ultraviolet Spectrograph (Juno-UVS) Observations of Jupiter’s Aurora

The Juno Ultraviolet Spectrograph (UVS) is an imaging Rowland Circle spectrograph mounted on the Juno Spacecraft in orbit about Jupiter. Operating between 70 and 205 nm UVS was built to measure Jupiter’s auroral and airglow emissions in the far- to extreme-ultraviolet spectral range (FUV-EUV range). These emissions provide a key link between the on board measurements of Jupiter’s magnetic field and particle populations within the intense Jovian magnetosphere and their interaction with Jupiter’s upper atmosphere.  The UV auroral emissions serve as a “witness plate” or “viewing screen” to some of the complex and powerful magnetospheric processes occurring there. We will present UV images, movies, and color ratio maps of both the northern and southern aurora and discuss how the many features evolve over time from the first Perijove on August 27, 2016 through the 7th Perijove planned on July 11, 2017.