Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI)

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

324

Solar Corona, Lyot Coronagraph, Xuv Heliograph, Heliospheric Imager, Coronal Loops, Coronal Mass Ejections, Stereo, Heliosphere

Scientific paper

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&sun;), two traditional Lyot coronagraphs (COR1: 1.5 4 R&sun; and COR2: 2.5 15 R&sun;) and two new designs of heliospheric imagers (HI-1: 15 84 R&sun; and HI-2: 66 318 R&sun;). 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.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1698696

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.