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30 June 2009
Article (Scientific journals)
The Heliospheric Imagers Onboard the STEREO Mission
Eyles, Chris; Harrison, Richard; Davis, Chris et al.
2009 • In Solar Physics, 254, p. 387-445
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Abstract :
[en] 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 elongation angles from 4.0° to 88.7° at the viewpoints of the two spacecraft, thereby allowing the observation of Earth-directed CMEs along the Sun -- Earth line to the vicinity of the Earth and beyond. Given the two separated platforms, this also presents the first opportunity to view the structure and evolution of CMEs in three dimensions. The STEREO spacecraft were launched from Cape Canaveral Air Force Base in late October 2006, and the HI instruments have been performing scientific observations since early 2007. The design, development, manufacture, and calibration of these unique instruments are reviewed in this paper. Mission operations, including the initial commissioning phase and the science operations phase, are described. Data processing and analysis procedures are briefly discussed, and ground-test results and in-orbit observations are used to demonstrate that the performance of the instruments meets the original scientific requirements.
Research center :
CSL - Centre Spatial de Liège - ULiège
Disciplines :
Aerospace & aeronautics engineering
Space science, astronomy & astrophysics
Author, co-author :
Eyles, Chris;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Harrison, Richard;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Davis, Chris;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Waltham, Nick;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Shaughnessy, B. M.;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Mapson-Menard, Helen;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Bewsher, Danielle;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Crothers, Steeve;  Space Science and Technology Department, STFC Rutherford Appleton Laboratory
Davies, Jackie;  School of Physics and Astronomy, University of Birmingham
Simnett, George;  University of Birmingham
Howard, Russell A.;  Space Science Division, Naval Research Laboratory
Moses, Dan;  Space Science Division, Naval Research Laboratory
Newmark, Jeff;  Space Science Division, Naval Research Laboratory
Socker, Dennis G.;  Naval Research Laboratory (Washington)
Halain, Jean-Philippe ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Defise, Jean-Marc ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Mazy, Emmanuel ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège) - Instrumentation et expérimentation spatiales
Rochus, Pierre  ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
More authors (8 more) Less
Language :
English
Title :
The Heliospheric Imagers Onboard the STEREO Mission
Publication date :
01 February 2009
Journal title :
Solar Physics
ISSN :
0038-0938
Publisher :
Springer Science & Business Media B.V.
Volume :
254
Pages :
387-445
Peer reviewed :
Peer Reviewed verified by ORBi

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