Update on the Maunakea Spectroscopic Explorer (MSE)
Doug Simons
Canada France Hawaii Telescope



A future flagship in 21st century ground based astronomy, the Maunakea Spectroscopic Explorer (MSE) has been under development for a number of years and is about to enter its Preliminary Design phase. With a growing partnership and exceptional progress defining its design and science case, MSE is poised to revolutionize research involving large scale multi-object spectroscopic datasets. As a replacement for CFHT, MSE's 11 m telescope and fully dedicated banks of low, medium, and high resolution spectrometers feeding 4000 fibers will open incredible avenues of research from Maunakea through surveys that have not been practical to date without such a machine. MSE is also a marvel of engineering, reusing a large fraction of CFHT's existing facility without any increase in its footprint while tripling the diameter of the telescope's primary mirror and increasing the height of the enclosure by only ~10%. It will serve as a model for "recycling" observatory sites on Maunakea while radically updating CFHT's mission with strong synergies with other observatories including LSST and GAIA.