FIBRE-pac: FMOS image-based reduction package

TL;DR

FIBRE-pac is an IRAF-based software package designed to automatically reduce complex FMOS images from the Subaru telescope, providing calibrated spectra and noise maps despite variable airglow emissions.

Contribution

This paper introduces FIBRE-pac, a new automated reduction package tailored for FMOS images with complex features, improving efficiency and accuracy in data processing.

Findings

Automates most reduction steps for FMOS images.

Produces wavelength- and flux-calibrated images with noise maps.

Handles variable airglow emissions effectively.

Abstract

The FIBRE-pac (FMOS image-based reduction package) is an IRAF-based reduction tool for the fiber multiple-object 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 the 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.