Astrometry in Wide-Field Surveys

Details Astrometry in Wide-Field Surveys Astrometry in Wide-Field Surveys

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..366..340p&link_type=abstract

Transiting Extrapolar Planets Workshop ASP Conference Series, Vol. 366, Proceedings of the conference held 25-28 September, 2006

Astronomy and Astrophysics

Astronomy

2

Scientific paper

We present a general two-dimensional catalog matching algorithm that can efficiently be applied for wide-field astrometry where the acquired images are strained by distortions due to the large field-of-view. The algorithm is able to derive the transformations between a reference catalogue and the images up to arbitrary polynomial order. Our method is applied successfully in the Hungarian-made Automated Telescope Network \citep[HATNet, see][]{bakos04} project both in real-time astrometrical guiding of the telescopes as well as during the reduction of the data. In this paper we summarize the key points of the newly developed parts of the algorithms as well as the performance on large set of wide FOV images taken by the telescopes of HATNet.

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