SDSS Systems
You may check the status of these systems, with various methods available to access the data:
| System | URL | Access Methods |
| Data Transfer Node (DTN) | rsync://dtn.sdss.org | rsync via a dedicated node |
| Science Archive Server (SAS) | https://data.sdss.org/sas | wget, curl over https rsync (DTN preferred) |
| SkyServer | https://skyserver.sdss.org | SQL, Jupyter Notebooks |
| CasJobs via SkyServer | https://skyserver.sdss.org/casjobs | Large SQL jobs |
| SAS Webapp (SDSS-I-IV) | https://data.sdss.org/home | Search, View, Download |
| Marvin | https://dr17.sdss.org/marvin | Web, Command-line, API |
| Zora (SDSS-V) | https://dr19.sdss.org/zora/ | Web, Command-line, API |