%0 Journal Article
%A Cardiel López, Nicolás
%A Jiménez Esteban, F. M.
%A Alacid, J. M.
%A Solano, E.
%A Aberasturi, M.
%T TESELA: a new virtual observatory tool to determine blank fields for astronomical observations
%D 2011
%@ 0035-8711
%U https://hdl.handle.net/20.500.14352/44434
%X 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.
%~