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The Heliospheric Imager for the NASA STEREO Mission
Part of the SECCHI Consortium
Using heliospheric imaging for space weather application
A sequence of six images from February 2011 illustrating the passage of a CME through the combined STEREO-A COR2, HI-1 and HI-2 field-of-view. The white near horizontal line denotes the position angle of Earth; the location of Earth corresponds to the white dot at the intersection of that line with the near-vertical curve.
HI SpaceWeather
The first comprehensive catalogue of CMEs in the heliosphere
Histogram of daily-average rates of HICAT CMEs detected by (a) STEREO/HI-1A and (b) STEREO/HI-1B compared to coronal CME rates from (c) STEREO/COR-2A and (d) STEREO/COR-2B and (e) SOHO/LASCO. Panel f shows the monthly sunspot count over the same period.
HI CME catalogue