0000000000139650

AUTHOR

N. Waltham

showing 2 related works from this author

The Heliospheric Imagers Onboard the STEREO Mission

2008

Mounted on the sides of two widely separated spacecraft, the two Heliospheric Imager (HI) instruments onboard NASA’s STEREO mission view, for the first time, the space between the Sun and Earth. These instruments are wide-angle visible-light imagers that incorporate sufficient baffling to eliminate scattered light to the extent that the passage of solar coronal mass ejections (CMEs) through the heliosphere can be detected. Each HI instrument comprises two cameras, HI-1 and HI-2, which have 20° and 70° fields of view and are off-pointed from the Sun direction by 14.0° and 53.7°, respectively, with their optical axes aligned in the ecliptic plane. This arrangement provides coverage over solar…

PhysicsData processingMission operationsSpacecraftbusiness.industryEclipticAstronomy and AstrophysicsSpace and Planetary ScienceLine (geometry)CalibrationCoronal mass ejectionbusinessHeliosphereRemote sensingSolar Physics
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The Solar Mass Ejection Imager and Its Heliospheric Imaging Legacy

2013

The Solar Mass Ejection Imager (SMEI) was the first of a new class of helio- spheric and astronomical white-light imager. A heliospheric imager operates in a fashion similar to coronagraphs, in that it observes solar photospheric white light that has been Thomson scattered by free electrons in the solar wind plasma. Compared with traditional

PhysicsSolar massZodiacal lightAstrophysics::High Energy Astrophysical PhenomenaGegenscheinInterplanetary mediumAstronomyAstronomy and AstrophysicsPlasmaSolar windPlanetary scienceSpace and Planetary SciencePhysics::Space PhysicsCoronal mass ejectionAstrophysics::Solar and Stellar AstrophysicsAstrophysics::Earth and Planetary AstrophysicsSpace Science Reviews
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