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Advances in Astronomy
Volume 2010 (2010), Article ID 715237, 5 pages
Research Article

The Photometry Pipeline of the Watcher Robotic Telescope

1Space Science Group, School of Physics, University College Dublin, Ireland
2Instituto de Astrofísica de Andalucía, C/ Bajo de Huétor 50, ES 18008 Granada, Spain
3Physics Department, University of the Free State, Bloemfontein 9301, South Africa

Received 30 June 2009; Accepted 2 December 2009

Academic Editor: Alberto J. Castro-Tirado

Copyright © 2010 A. Ferrero et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The Watcher robotic telescope was developed primarily to perform rapid optical follow-up observations of Gamma-Ray Bursts (GRBs). Secondary scientific goals include blazar monitoring and variable star studies. An automated photometry pipeline to rapidly analyse data from Watcher has been implemented. Details of the procedures to get image zero-point, source instrumental measurement, and limiting magnitude are presented. Sources of uncertainty are assessed and the performance of the pipeline is tested by comparison with a number of catalogue sources.