Journal Article

<span class="smallCaps">tesela</span>: a new Virtual Observatory tool to determine blank fields for astronomical observations

N. Cardiel, F. M. Jiménez-Esteban, J. M. Alacid, E. Solano and M. Aberasturi

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 417, issue 4, pages 3061-3071
Published in print November 2011 | ISSN: 0035-8711
Published online November 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.19464.x
tesela: a new Virtual Observatory tool to determine blank fields for astronomical observations

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The observation of blank fields, regions of the sky devoid of stars down to a given threshold magnitude, constitutes one of the typical important calibration procedures required for the proper reduction of astronomical data obtained in imaging mode. This work describes a method, based on the use of the Delaunay triangulation on the surface of a sphere, that allows for easy generation of blank-field catalogues. In addition to that, a new tool named tesela, accessible through the Internet, has been created to facilitate the user to retrieve, and visualize using the Virtual Observatory tool aladin, the blank fields available near a given position in the sky.

Keywords: methods: data analysis; methods: numerical; catalogues; virtual observatory tools

Journal Article.  7469 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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