This page describes the Guadalupe value-added catalog, which will be
publicly released as part of the DESI Data Release 1 (DESI/DR1) sometime in
2024 (exact date TBD).
Please refer to the :ref:`acknowledgments` section for the conditions for using this VAC.
Note
We only document the v2.0 version of this VAC; the v1.0 version is publicly accessible but has been deprecated and is not documented further.
Data from the Guadalupe VAC can be accessed at any of the following links:
| Data url | https://data.desi.lbl.gov/public/dr1/vac/dr1/fastspecfit/guadalupe/v2.0 |
| NERSC (for collaborators) | /global/cfs/cdirs/desi/public/dr1/vac/dr1/fastspecfit/guadalupe/v2.0 |
For more information regarding the content and organization of the VAC, please click on the following links:
- :ref:`Healpix Catalogs<healpix catalogs>`
- :ref:`Merged Catalogs<merged catalogs>`
- :ref:`Sample Selection<sample selection>`
- :ref:`Updated QSO Redshifts<qso redshifts>`
The following table summarizes the size and number of targets in each merged catalog.
Note
The last catalog listed in the table is a super-merge of all the preceding catalogs, i.e., a merge over all surveys and programs.
.. rst-class:: columns
| File Name | File Size | Number of Targets |
|---|---|---|
| fastspec-guadalupe-special-dark.fits | 15.7 MB | 3,847 |
| fastspec-guadalupe-special-bright.fits | 38.9 MB | 9,598 |
| fastspec-guadalupe-main-bright.fits | 4.31 GB | 1,092,038 |
| fastspec-guadalupe-main-dark.fits | 4.46 GB | 1,131,601 |
| fastspec-guadalupe.fits | 8.83 GB | 2,237,084 |
The following table summarizes the number of QSO targets whose redshift has been updated using the procedure documented :ref:`here<qso redshifts>`.
.. rst-class:: columns
| Catalog | Number of Targets | Number with Corrected Redshifts |
|---|---|---|
| fastspec-guadalupe-main-bright.fits | 1,092,038 | 153 |
| fastspec-guadalupe-main-dark.fits | 1,131,601 | 26,741 |
| fastspec-guadalupe-special-bright.fits | 9,598 | 13 |
| fastspec-guadalupe-special-dark.fits | 3,847 | 121 |
| fastspec-guadalupe.fits | 2,237,084 | 28,955 |
This section documents any issues or problems which were identified with the VAC after its final release.
- The tied amplitudes of [OII]7320,7330 doublet were reversed in the line fitting [#119].
To report projects or to request new features please open a ticket.