Calibrations of SITELLE's first data release

TL;DR

This paper evaluates the calibration accuracy of SITELLE's first data release, detailing the data reduction pipeline to ensure reliable spectral measurements from the instrument.

Contribution

It provides a comprehensive assessment of calibration procedures and accuracy for SITELLE's initial data, enhancing data reliability for astronomical research.

Findings

Calibration accuracy metrics are established for SITELLE's data.

Detailed description of the data reduction pipeline (ORBS).

Validation of spectral data quality in the first release.

Abstract

SITELLE is an imaging Fourier Transform Spectrometer installed at the Canada-France-Hawaii Telescope since July 2015. It delivers spectral cubes covering an 11'x11' field-of-view with a seeing-limited spatial resolution and a tunable spectral resolution (R=1-10 000) in selected passbands of the visible band (350-900 nm). We present an accurate picture of the calibration accuracy of SITELLE's first data release. To this purpose, most of the operations of the reduction pipeline (ORBS) are described in details.