Astronomy and Astrophysics – Astronomy
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.6910b&link_type=abstract
American Astronomical Society Meeting 204, #69.10; Bulletin of the American Astronomical Society, Vol. 36, p.795
Astronomy and Astrophysics
Astronomy
Scientific paper
The Solar Mass Ejection Imager (SMEI) was launched in January 2003 into Earth orbit. SMEI is designed to observe heliospheric structures illuminated by Thomson-scattered sunlight. The design specification for SMEI is 0.1% in differential photometry for bright unresolved objects, to enable star removal from the heliospheric maps. Such a near-Earth imager will also provide photometric time-series measurements of these stars as a by-product of this removal process. For each 101-minute orbit, SMEI will deliver near complete sky maps having an expected (1 sigma) photometric resolution of about the equivalent of an 11th magnitude star in a square degree. We will report on progress in establishing the photometric calibrations for the SMEI cameras, and discuss SMEI's potential for delivering photometric time-series measurements, which data can then be applied to the study of variable stars, eclipsing stellar systems, and to search for extrasolar planets by the occultation method.
Buffington Andrew
Hick Pierre P.
Jackson Bernard V.
Penny Alan
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