HST observed Saturn’s northern aurorae throughout 2017, across solstice (reached on 24 May). These observations were carefully coordinated with expected passes of the Cassini spacecraft within the source region of Saturn’s auroral kilometric radiation (found to be colocated at Earth with acceleration regions), i.e. along magnetic field lines mapping to atmospheric aurorae. There are released before the end of the HST proprietary period as an acknowledgement to the support of the Cassini project to this observational campaign :
– Saturn, Mar.-Sept. 2017 (STIS, 24 images, 1 spectrum)