Books > Science & Mathematics > Astronomy, space & time > Solar system
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Solar Image Analysis and Visualization (Hardcover, 2009 ed.)
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Discovery Miles 29 040
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Solar Image Analysis and Visualization (Hardcover, 2009 ed.)
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The SECCHI A and B instrument suites (Howard et al. , 2006) onboard
the two STEREO mission spacecraft (Kaiser, 2005) are each composed
of: one Extreme Ultra-Violet Imager (EUVI), two white-light
coronagraphs (COR1 and COR2), and two wide-angle heliospheric
imagers (HI1 and HI2). Technical descriptions of EUVI, COR1 and the
HIs can be found in Wuelser et al. (2004), Thompson et al. (2003),
and De?se et al. (2003), respectively. The images produced by
SECCHI represent a data visualization challenge: i) the images are
2048x2048 pixels (except for the HIs, which are usually binned
onboard 2x2), thus the vast majority of computer displays are not
able to display them at full frame and full r- olution, and ii)
more importantly, the ?ve instruments of SECCHI A and B were
designed to be able to track Coronal Mass Ejections from their
onset (with EUVI) to their pro- gation in the heliosphere (with the
HIs), which implies that a set of SECCHI images that covers the
propagation of a CME from its initiation site to the Earth is
composed of im- ?1 ages with very different spatial resolutions -
from 1. 7 arcsecondspixel for EUVI to 2. 15 ?1 arcminutespixel for
HI2, i. e. 75 times larger. A similar situation exists with the
angular scales of the physical objects, since the size of a CME
varies by orders of magnitude as it expands in the heliosphere.
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