Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI)

By R. Howard, J. Moses, A. Vourlidas, J. Newmark, D. Socker, S. P. Plunkett, C. Korendyke, J. W. Cook, A. Hurley, J. Davila and 36 more. SPIE Optics + Photonics, 2000

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The Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) is a five telescope package, which has been developed for the Solar Terrestrial Relation Observatory (STEREO) mission by the Naval Research Laboratory (USA), the Lockheed Solar and Astrophysics Laboratory (USA), the Goddard Space Flight Center (USA), the University of Birmingham (UK), the Rutherford Appleton Laboratory (UK), the Max Planck Institute for Solar System Research (Germany), the Centre Spatiale de Leige (Belgium), the Institut d’Optique (France) and the Institut d’Astrophysique Spatiale (France). SECCHI comprises five telescopes, which together image the solar corona from the solar disk to beyond 1 AU. These telescopes are: an extreme ultraviolet imager (EUVI: 1–1.7 R⊙), two traditional Lyot coronagraphs (COR1: 1.5–4 R⊙ and COR2: 2.5–15 R⊙) and two new designs of heliospheric imagers (HI-1: 15–84 R⊙ and HI-2: 66–318 R⊙). All the instruments use 2048×2048 pixel CCD arrays in a backside-in mode. The EUVI backside surface has been specially processed for EUV sensitivity, while the others have an anti-reflection coating applied. A multi-tasking operating system, running on a PowerPC CPU, receives commands from the spacecraft, controls the instrument operations, acquires the images and compresses them for downlink through the main science channel (at compression factors typically up to 20×) and also through a low bandwidth channel to be used for space weather forecasting (at compression factors up to 200×). An image compression factor of about 10× enable the collection of images at the rate of about one every 2–3 minutes. Identical instruments, except for different sizes of occulters, are included on the STEREO-A and STEREO-B spacecraft.

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Citations in the corpus

The Heliospheric Imagers Onboard the STEREO Mission (2009, methodology): “The STEREO multi-instrument remote sensing package, known as SECCHI (Sun-Earth Connection Coronal and Heliospheric Investigation; see Howard, Moses, and Socker, 2000; Howard et al., 2008) includes a Heliospheric Imager (HI) on each spacecraft.”
SunPy—Python for solar physics (2015, background): “…Solar Spectroscopic Imager (Lin et al., 2002), • Solar TErrestrial RElations Observatory (STEREO, Kaiser, 2005) Extreme Ultraviolet Imager (EUVI, (Wuelser et al., 2004)) • STEREO CORonagraph 1/2 (COR 1/2, Howard et al., 2002) • Hinode XRT - X-Ray Telescope (Kosugi et al., 2007; Golub et al., 2007).”
Space weather: the solar perspective (2021, methodology): “…There are four instrument packages mounted on each of the two STEREO spacecraft, SECCHI comprising EUV and white-light coronagraphs and imagers (Howard et al. 2008), IMPACT sampling the 3D distribution of solar wind plasma and magnetic field (Luhmann et al. 2008; Acuña et al. 2008), SWAVES…”
The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) (2011, methodology): “The design is based on previous flight designs, most recently for the cameras of the STEREO/SECCHI instrument (Howard et al., 2008).”
COMBINED STEREO/RHESSI STUDY OF CORONAL MASS EJECTION ACCELERATION AND PARTICLE ACCELERATION IN SOLAR FLARES (2010, methodology): “Data and Methods The Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI; Howard et al. 2008) instrument package is part of each of the STEREO twin spacecraft, STEREO-A(head) and STEREO-B(ehind).”
OBSERVATIONS AND INTERPRETATION OF A LOW CORONAL SHOCK WAVE OBSERVED IN THE EUV BY THE SDO/AIA (2011, background): “The observations from the Extreme Ultraviolet Imager (EUVI; Wuelser et al. 2004; Howard et al. 2008) instruments on board the twin Solar–Terrestrial Relations Observatory (STEREO; Kaiser et al. 2008) spacecraft have advanced our understanding of the diffuse EUV wave (e.g., Long et al. 2008; Veronig…”
EVOLUTION OF MAGNETIC FIELD AND ENERGY IN A MAJOR ERUPTIVE ACTIVE REGION BASED ON SDO/HMI OBSERVATION (2011, methodology): “To rule out the projection effect, we inspect the coronal image sequences taken by SECCHI EUVI (Howard et al. 2008) on the twin STEREO spacecraft that are both near quadrature from the Sun-Earth line.”
Characteristics of EUV Coronal Jets Observed with STEREO/SECCHI (2009, methodology): “These images are collected by the EUVI (Extreme UltraViolet Imager) A and B imager and COR (CORonagraph) 1 and COR2 A and B coronagraphs on the STEREO A and B satellites as part of the SECCHI (SunEarth Connection Coronal and Heliospheric Investigation) instrument packages (Howard et al., 2008).”
GEOMETRIC TRIANGULATION OF IMAGING OBSERVATIONS TO TRACK CORONAL MASS EJECTIONS CONTINUOUSLY OUT TO 1 AU (2010, methodology): “Each spacecraft carries an identical imaging suite, the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI; Howard et al. 2008), which consists of an EUV imager (EUVI), two coronagraphs (COR1 and COR2), and two heliospheric imagers (HI1 and HI2).”
The Large Longitudinal Spread of Solar Energetic Particles During the 17 January 2010 Solar Event (2012, background): “The SECCHI investigation (Howard et al., 2008) provides remote sensing observations of the Sun in extreme ultra violet (EUVI, Wuelser (2004)) as well as coronagraphic observations (COR1 and COR2 instruments), which allow to link in-situ observations with the associated regions of solar activity.”
Ensemble Modeling of CMEs Using the WSA–ENLIL+Cone Model (2015, methodology): “ ﬁelds-of-view or planes-of-sky. We will call these planes-of-sky A and B, which may designate, for example, ﬁelds-of-view of the SECCHI/COR2 instruments onboard the STEREO A and STEREO B spacecraft (Howard et al., 2008). The tool is used to manually identify the same CME features in two consecutive”
SIMULTANEOUS OBSERVATION OF RECONNECTION INFLOW AND OUTFLOW ASSOCIATED WITH THE 2010 AUGUST 18 SOLAR FLARE (2011, methodology): “The EUV images of this flare were obtained by the Extreme Ultraviolet Imager (EUVI; Howard et al. 2008; Wüelser et al. 2004) on the Solar Terrestrial Relation Observatory spacecraft Ahead (STEREO-A; Kaiser et al. 2008) and the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory…”
Deriving the radial distances of wide coronal mass ejections from elongation measurements in the heliosphere - application to CME-CME interaction (2009, methodology): “The CME on January 25, 2007 was the fastest eruption imaged by the STEREO/Sun-Earth Connection Coronal and Heliospheric Investigation (SECCHI) suite to date (Howard et al., 2008).”
EUV WAVE REFLECTION FROM A CORONAL HOLE (2009, methodology): “EUVI belongs to STEREO’s Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI – Howard et al. 2008) instrument suite.”
AUTOMATED LASCO CME CATALOG FOR SOLAR CYCLE 23: ARE CMEs SCALE INVARIANT? (2008, background): “Currently, STEREO/SECCHI (Howard et al. 2008) observations show unambiguous evidence that coronagraphic observations only show a 2D reflection of the whole 3D corona.”