Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.418.1325s&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 418, Issue 2, pp. 1325-1334.
Astronomy and Astrophysics
Astronomy
Methods: Data Analysis, Planets And Satellites: General, Stars: Variables: General
Scientific paper
The Solar TErrestrial RElations Observatory (STEREO) is a system of two identical spacecraft in heliocentric Earth orbit. We use the two heliospheric imagers (HI), which are wide-angle imagers with multibaffle systems, to perform high-precision stellar photometry in order to search for exoplanetary transits and understand stellar variables. The large cadence (40 min for HI-1 and 2 h for HI-2), high precision, wide magnitude range (R mag: 4-12) and broad sky coverage (nearly 20 per cent for HI-1A alone and 60 per cent of the sky in the zodiacal region for all instruments combined) of this instrument place it in a region left largely devoid by other current projects. In this paper, we describe the semi-automated pipeline devised for reduction of the data, some of the interesting characteristics of the data obtained and data-analysis methods used, along with some early results.
Sangaralingam Vinothini
Stevens Ian R.
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