New scientific results with SpIOMM: a testbed for CFHT's imaging Fourier transform spectrometer SITELLE

TL;DR

This paper reports on new data and technical improvements for SpIOMM, an imaging Fourier transform spectrometer, enhancing its ability to observe faint objects and spectral features across various astronomical sources.

Contribution

The paper introduces recent technical and data reduction enhancements to SpIOMM, expanding its observational capabilities for faint objects and spectral lines.

Findings

Improved detection of faint objects and spectral lines.

Enhanced modulation efficiency in the near ultraviolet.

Successful observations of diverse astronomical sources.

Abstract

We present new data obtained with SpIOMM, the imaging Fourier transform spectrometer attached to the 1.6-m telescope of the Observatoire du Mont-M\'egantic in Qu\'ebec. Recent technical and data reduction improvements have significantly increased SpIOMM's capabilities to observe fainter objects or weaker nebular lines, as well as continuum sources and absorption lines, and to increase its modulation efficiency in the near ultraviolet. To illustrate these improvements, we present data on the supernova remnant Cas A, planetary nebulae M27 and M97, the Wolf-Rayet ring nebula M1-67, spiral galaxies M63 and NGC 3344, as well as the interacting pair of galaxies Arp 84.