GALEXGR6_7 NUV HiPS

The Galaxy Evolution Explorer (GALEX) satellite is a NASA mission led by the California Institute of Technology to investigate how star formation in galaxies evolved from the early Universe up to the present. GALEX uses microchannel plate detectors to obtain direct images in the near-UV (NUV) and far-UV (FUV) and a grism to disperse light for low resolution spectroscopy. From its launch into low-Earth orbit on April 28, 2003 the GALEX NUV camera operated almost continuously. The Project suspended operations of the FUV camera following an electrical overcurrent in May 2009. GALEX data products include a series of all sky surveys and deep sky surveys in the imaging mode, and partial surveys in the near and far UV spectroscopic modes. The principal imaging studies are the Nearby Galaxy Survey (NGS), Deep (DIS), Medium (MIS), and All Sky Imaging Surveys (AIS). During the course of the mission, the GALEX team have released data to the public through MAST at discrete times. The last complete release was the GR6 (late 2010 through mid 2011 for imaging supplements and the grism survey). A final release of GALEX data arrived in late 2012 at MAST. These included a number of redelivered GR6 data (additional visits and associated coadds from 2003 onwards), along with new tiles within GR7, which span approximately from Jan. 2010 through Feb. 2012