300-second image of the northern jovian UV aurora captured by HST during the GO-15638 campaign (exposure ID: odxc01okq). A 15° × 15° grid in System-III longitude and planetocentric latitude is included; the System-III longitude of certain meridians is given in white, and certain planetocentric latitudes are shown in magenta. The average subsolar longitude during this exposure (170°) is denoted by the solid yellow line, and the positions of the dawn and dusk hemispheres are included for guidance. The approximate location of the polar collar is enclosed by dashed red lines and the location of the noon active region by a dashed green ellipse. The bridges are highlighted with yellow arrows.