EMIR tutorials

Welcome. This is page shows tutorials of the data reduction pipelines (DRP) of the instrument EMIR at GTC.

EMIR is a wide-field, near-infrared, multi-object spectrograph installed at the Nasmyth focus of GTC. Its MOS mode allows observers to obtain tens of intermediate-resolution spectra simultaneously in the nIR bands Y, J, H and K. EMIR is designed to address the science goals of the proposing team and of the Spanish community at large.

Documentation maintainers: Nicolás Cardiel (cardiel@ucm.es) and Sergio Pascual (sergiopr@fis.ucm.es).

These tutorials have benefited from the work of Cristina Cabello (criscabe@ucm.es), who has tested the code in detail on data reduction related to the GOYA project.

Warning

If you are reducing EMIR data obtained with read-out mode RAMP, please, have a look to the instructions provided at Checking the RAMPs.

It is very easy to check the employed read-out mode using the auxiliary script fitsheader (provided in the astropy package). For example:

$ fitsheader *.fits -k readmode -f

Document index:

• Preliminaries
• Imaging mode tutorial: combination of dithered exposures
• Spectroscopic mode tutorial: MOS data
• Flatfield generation