National Optical Astronomy Observatory

Image credits: T. Eglin/NOAO/AURA/NSF; P. Marenfeld/NOAO/AURA/NSF; NOAO/AURA/NSF

The April 2018 NOAO Newsletter is online and ready to download. It contains sections on Science Highlights, Community Science & Data, System Observing, and NOAO Operations & Staff.

On the Cover Clockwise from upper right: a) Nicholas Mayall at the guiding eyepiece at the prime focus during commissioning of the KPNO 4-meter telescope that now bears his name; b) the Mayall 4-meter under moonlight during the MzLS imaging survey, which was completed in February 2018; c) the Mayalls primary mirror being lifted out of its cell during an early stage of the work to prepare the telescope for installation of the Dark Energy Spectroscopic Instru- ment (DESI). By mid-June the entire top end of the telescope will have been removed, and installation of the new prime focus system for DESI will begin. Initial commissioning with the new DESI hardware should begin in November 2018.

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