The goal of this blog is to become a dynamical way of providing fast and updated useful information, to the user of the instrument OSIRIS at GTC, complementing the information provided by GRANTECAN S.A.
It contains information about the manuals, instrument calibration, pipelines for download, tutorials, contributions, announcements, etc. Also, some historical information about the integration, and commissioning of the different observing modes is provided as well.
This Blog is maintained by the OSIRIS Scientific Team.

Tuesday, November 27, 2012


The TF wavelength calibrations provided in Méndez-Abreu et al. (2010), and Mayya et al. (2012) are wrong. Not only they are based on completely erroneous optical concepts, such as arbitrarily assuming changes of the focal distances of the OSIRIS camera or that of the GTC (!), but the numeric results from their formulae depart from the full correct calibration. This can lead to significant errors, even in the central part of the FOV. PLEASE NOTE that the only correct wavelength calibration is that provided in this blog and the last version of the OSIRIS TF User's manual, that can be downloaded from here

To sort out this problem, the next version of the OSIRIS pipeline will include the TF wavelength calibration across the FOV.