Basis for a SOAR Optical Imager Pipeline

MAIA, F.F.S.; PIATTI, ANDRÉS E.; + 2 COAUTORES

bol. Asociación Argentina de Astronomía

J.J. Clariá, P. Benaglia, R. Barbá, A.E. Piati, F. Berailles

Año: 2012 vol. 54 p. 431 - 434

0571–3285

The development of CCD mosaics %over the single chip CCDs was a major %breakthrough on the image acquiring processes that had been incorporated into the majority of the recent observing facilities, including on SOAR. We discuss the treatment of mosaic CCD exposures including basic instrumental calibration, the creation of bad pixel masks, the removal of cosmic rays and fringes by sky flat-fielding, the set up of a World Coordinate System by astrometric calibration and the removal of the gap by the creation of single,deep images out of a set of dithered exposures. We have assembled these image treatment programs on a series of semi-automated IRAF scriptsootnote{They can berequested from the first author.} to handle thereduction of general SOAR Optical Imager (SOI) images requiring little on none user interaction. %These could provide a basis for a SOI pipeline.