The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete
  Release of MaNGA, MaStar and APOGEE-2 Data
  This paper documents the seventeenth data release (DR17) from the Sloan
Digital Sky Surveys; the fifth and final release from the fourth phase
(SDSS-IV). DR17 contains the complete release of the Mapping Nearby Galaxies at
Apache Point Observatory (MaNGA) survey, which reached its goal of surveying
over 10,000 nearby galaxies. The complete release of the MaNGA Stellar Library
(MaStar) accompanies this data, providing observations of almost 30,000 stars
through the MaNGA instrument during bright time. DR17 also contains the
complete release of the Apache Point Observatory Galactic Evolution Experiment
2 (APOGEE-2) survey which publicly releases infra-red spectra of over 650,000
stars. The main sample from the Extended Baryon Oscillation Spectroscopic
Survey (eBOSS), as well as the sub-survey Time Domain Spectroscopic Survey
(TDSS) data were fully released in DR16. New single-fiber optical spectroscopy
released in DR17 is from the SPectroscipic IDentification of ERosita Survey
(SPIDERS) sub-survey and the eBOSS-RM program. Along with the primary data
sets, DR17 includes 25 new or updated Value Added Catalogs (VACs). This paper
concludes the release of SDSS-IV survey data. SDSS continues into its fifth
phase with observations already underway for the Milky Way Mapper (MWM), Local
Volume Mapper (LVM) and Black Hole Mapper (BHM) surveys.
