Data Reduction Pipelines
SDSS spectra are generated by running raw data from the SDSS Observatories in the North and South through a series of data reductions, orchestrated by SDSS Pipelines. The following table lists each SDSS Data Reduction Pipeline (DRP), indicating whether it is current in SDSS-V or completed in a previous phase of SDSS:
| Pipeline | Survey | Included in Data Releases |
|---|---|---|
| APOGEE Reduction Pipeline | SDSS-IV APOGEE-2 | DR13 – DR17 |
| SDSS-III APOGEE | DR10 – DR12 | |
| BOSS Reduction Pipeline | SDSS-V BHM | DR18: eFEDS Spectra |
| SDSS-IV eBOSS | DR13 – DR17 | |
| SDSS-III BOSS | DR9 – DR12 | |
| MaNGA DRP | SDSS-IV MaNGA | DR13 – DR17 |
| MARVELS Pipeline | SDSS-III MARVELS | DR11 – DR12 |
| SEGUE Stellar Parameter Pipeline | SDSS-I/II SEGUE/SEGUE-2 | DR6 – DR7 |
Data Analysis Pipelines
Due to computation limits, data reduction pipelines do not include more complex analysis that requires additional computer processing, often supporting multiple configurations to provide parallel results for comparison. The following table lists each SDSS Data Analysis Pipeline (DAP), indicating whether it is current in SDSS-V or completed in a previous phase of SDSS:
| Pipeline | Survey | Included in Data Releases |
|---|---|---|
| ASPCAP Pipeline | SDSS-IV APOGEE-2 | DR13 – DR17 |
| BOSS Galaxy Pipeline | SDSS-III BOSS | DR9 – DR12 |
| MaNGA DAP | SDSS-IV MaNGA | DR15 – DR17 |
Imaging Pipeline
The SDSS Imaging Pipeline was used in SDSS-I/II, and completed by DR8, with some corrections added to the astrometry algorithms in DR9, and to the photometric calibration definitions in DR13, and is included in all data releases through DR18.
Value-Added Catalogs
Members of the SDSS Collaboration that utilize the results of the data reduction and analysis pipelines have the opportunity to add their Value-Added Catalogs, listed here for each data release.