Maps from the 15 July 2014 for Fe xii lines, showing views of the prominence by AIA and EIS. Left: AIA 193 Å filter. Vertical dashed line shows the edge of the EIS FOV. Middle: EIS 195.119 Å. Right: EIS 195.179 Å with 22% and 25% contours of 195.119 Å (this line pair is used for density diagnostics in Sect. 5). The observations were made at 10:34 UT. The dark horizontal features in the EIS maps are artifacts from the EIS detectors.