FIBRE-Pac: FMOS image-based reduction package

Abstract

The FIBRE-pac (FMOS image-based reduction package) is an IRAF-based reduction tool for the fiber multipleobject spectrograph (FMOS) of the Subaru telescope. To reduce FMOS images, a number of special techniques are necessary, because each image contains about 200 separate spectra with airglow emission lines variable in spatial and time domains, and with complicated throughput patterns for airglow masks. In spite of these features, almost all of the reduction processes, except for a few steps, are carried out automatically by scripts in text format, making it easy to check the commands step by step. Wavelength- and flux-calibrated images together with their noise maps are obtained using this reduction package. © 2012 Astronomical Society of Japan.