June 2019 NOAO Newsletter

The June 2019 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 First Light image (of M51) with the new DESI Corrector Assembly (CA) on the Mayall 4m telescope on Kitt Peak. The CA consists of four ~1m diameter lenses and a two-element atmospheric dispersion corrector, as well as the hexapod, used for fine-motion and focus control of the CA. The image was made with the Commissioning Instrument, composed of five CCD cameras temporarily installed in the DESI focal plane.