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Advances in Astronomy
Volume 2010, Article ID 701534, 8 pages
Research Article

Recent GRBs Observed with the 1.23 m CAHA Telescope and the Status of Its Upgrade

1Instituto de Astrofísica de Andalucía (IAA-CSIC), 18008 Granada, Spain
2Imaging Processing Laboratory (IPL), University of Valencia, 46010 Valencia, Spain
3INAF/Brera Astronomical Observatory, Via Bianchi 46, Lecco, 23807 Merate, Italy
4Universidad de Málaga, 29071 Málaga, Spain
5LAEX-CAB (INTA-CSIC), LAEFF, P.O. Box 78, Villanueva de la Cañada, 28691 Madrid, Spain
6Institute of Planetary Research, DLR, 12489 Berlin, Germany

Received 2 July 2009; Revised 22 October 2009; Accepted 4 January 2010

Academic Editor: Taro Kotani

Copyright © 2010 Javier Gorosabel 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.


We report on optical observations of Gamma-Ray Bursts (GRBs) followed up by our collaboration with the 1.23 m telescope located at the Calar Alto observatory. The 1.23 m telescope is an old facility, currently undergoing upgrades to enable fully autonomous response to GRB alerts. We discuss the current status of the control system upgrade of the 1.23 m telescope. The upgrade is being done by our group based on the Remote Telescope System, 2nd Version (RTS2), which controls the available instruments and interacts with the EPICS database of Calar Alto. (Our group is called ARAE (Robotic Astronomy & High-Energy Astrophysics) and is based on members of IAA (Instituto de Astrofísica de Andalucía). Currently the ARAE group is responsible to develop the BOOTES network of robotic telescopes (Jelínek et al. 2009).) Currently the telescope can run fully autonomously or under observer supervision using RTS2. The fast reaction response mode for GRB reaction (typically with response times below 3 minutes from the GRB onset) still needs some development and testing. The telescope is usually operated in legacy interactive mode, with periods of supervised autonomous runs under RTS2. We show the preliminary results of several GRBs followed up with observer intervention during the testing phase of the 1.23 m control software upgrade.