SITELLE was at the CFHT telescope for engineering tests on a full moon night last week. Professor Laurent Drissen of Université Laval took advantage of the opportunity to obtain a data cube of the Messier 51 galaxy, from which here are a few excerpts:
In the image on the left, you can see the Halpha flux (ionized hydrogen), with a little stellar continuum left to make it look prettier, and the Doppler image on the right (rotation speed of ionized gas). Four million spectra to analyze….Vive la science!
SITELLE is an instrument funded by the Canada Foundation for Innovation.