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Sloan Digital Sky Survey
The Sloan Digital Sky Survey V conducts multi-epoch optical and infrared spectroscopy across the sky, with coverage of the Milky Way and nearby galaxies.
About Sloan Digital Sky Survey
The Sloan Digital Sky Survey V (SDSS-V) is a spectroscopic sky survey. It gathers multi-epoch optical and infrared spectra across the entire sky and provides integral-field spectroscopic coverage of the Milky Way and Local Volume galaxies. Its latest public release, Data Release 20 (DR20), contains spectra and data products from the Black Hole Mapper and Milky Way Mapper programs, along with preview tiles from the Local Volume Mapper.
DR20 also includes new Value Added Catalogs, tutorials on working with the DR20 data, and two web applications: LVMvis for Local Volume Mapper data and Zora for Black Hole Mapper and Milky Way Mapper data. Data from earlier SDSS surveys (SDSS-I to SDSS-IV) remains available on the project's completed surveys and SDSS-IV pages. The next release, DR21, is scheduled for 2027. Pricing is not stated.
Key features
- Multi-epoch optical and infrared spectroscopy covering the entire sky
- Integral-field spectroscopy of the Milky Way and Local Volume galaxies
- Milky Way Mapper: time-domain spectroscopy of Milky Way stars of all types
- Black Hole Mapper: optical time-domain spectroscopy of quasars and X-ray sources
- Value Added Catalogs and tutorials for working with DR20 data
- LVMvis and Zora web applications for exploring DR20 data
Best for: Astronomers, students, and researchers who want public spectroscopic survey data on Milky Way stars, nearby galaxies, and black holes.
Good for
- Data is published in a format intended for beginner students, amateur astronomers, and professional astronomers
- DR20 includes tutorials and web applications for working with the data
- Data from earlier SDSS surveys remains available
Watch out for
- DR20 includes only several preview tiles of Local Volume Mapper data
- The next data release, DR21, is scheduled for 2027 and is not yet available
Sloan Digital Sky Survey at a glance
- Website
- sdss.org
- Category
- Research & Data › Open Data & Datasets
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Sloan Digital Sky Survey FAQ
Where can I find data from earlier SDSS surveys?
Data from SDSS-I to SDSS-IV is available on the completed surveys page and the SDSS-IV webpages. Completed surveys listed include the SDSS Imaging and Legacy Survey, Supernova Survey, SEGUE1/2, MARVELS, (e)BOSS, APOGEE-1/2, MaNGA and MaStar.
When is the next data release scheduled?
The next data release, DR21, is currently scheduled for 2027.
Who is the data intended for?
The site states that the data is made publicly available in a format helpful to a broad range of users, from beginner students to both amateur and professional astronomers.
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