The Heliospheric Imager for the NASA STEREO Mission
Part of the SECCHI Consortium
Images of a recent Earth-directed Coronal Mass Ejection (CME) taken by the
RAL-led Heliospheric Imager (HI) instruments on the STEREO-A (HI-1A: left hand panel) and
STEREO-B spacecraft (HI-1B: right hand panel). This CME, which was launched at around
0 UT on 15 March 2013, resulted in significant auroral activity at Earth.
Around this time, the HI instrument on STEREO-B was also observing the passage of
Comet C/2011 L4 (PANSTARRS). A plethora of stars, and various planets, are also visible
in the HI field of view.
A movie can also be