SDSS-IV: Current Surveys (2014-2020) APOGEE-2 eBOSS SPIDERS TDSS MaNGA MaStar SDSS-III: Prior Surveys (2008-2014) APOGEE BOSS Marvels Segue-2 SDSS-I/II: Prior Surveys (2000-2008) Legacy Supernova Segue-1 SDSS-IV: Current Surveys (2014-2020) After nearly a decade of design and construction, the Sloan Digital Sky … Continue reading Sloan Digital Sky Surveys