This page describes the Fuji value-added catalog, which will be publicly
released as part of the DESI Early Data Release (DESI/EDR) in late-2023.
Please refer to the :ref:`acknowledgments` section for the conditions for using this VAC.
Note
We only document the v3.0 version of this VAC; the v1.0 and v2.0 versions have been deprecated and are not documented further.
Data from the Fuji VAC can be accessed at any of the following links:
| Data url | https://data.desi.lbl.gov/desi/spectro/fastspecfit/fuji/v3.0 |
| Interactive web-app | https://fastspecfit.desi.lbl.gov |
| NERSC (for collaborators) | /global/cfs/cdirs/desi/spectro/fastspecfit/fuji/v3.0 |
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-fuji-cmx-other.fits | 12.8 MB | 2,771 |
| fastspec-fuji-special-dark.fits | 161 MB | 35,649 |
| fastspec-fuji-sv1-backup.fits | 17.1 MB | 3,683 |
| fastspec-fuji-sv1-bright.fits | 579 MB | 126,678 |
| fastspec-fuji-sv1-dark.fits | 1.05 GB | 235,942 |
| fastspec-fuji-sv1-other.fits | 156 MB | 34,152 |
| fastspec-fuji-sv2-backup.fits | 664 KB | 107 |
| fastspec-fuji-sv2-bright.fits | 213 MB | 46,510 |
| fastspec-fuji-sv2-dark.fits | 241 MB | 52,781 |
| fastspec-fuji-sv3-backup.fits | 7.31 MB | 1,564 |
| fastspec-fuji-sv3-bright.fits | 1.19 GB | 265,325 |
| fastspec-fuji-sv3-dark.fits | 2.66 GB | 592,441 |
| fastspec-fuji.fits | 6.29 GB | 1,397,603 |
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 Objects | Number with Corrected Redshifts |
|---|---|---|
| {fastspec}-fuji-cmx-other.fits | 2,771 | 56 |
| {fastspec}-fuji-special-dark.fits | 35,649 | 313 |
| {fastspec}-fuji-sv1-backup.fits | 3,683 | 100 |
| {fastspec}-fuji-sv1-bright.fits | 126,678 | 65 |
| {fastspec}-fuji-sv1-dark.fits | 235,942 | 3,810 |
| {fastspec}-fuji-sv1-other.fits | 34,152 | 170 |
| {fastspec}-fuji-sv2-backup.fits | 107 | 0 |
| {fastspec}-fuji-sv2-bright.fits | 46,510 | 8 |
| {fastspec}-fuji-sv2-dark.fits | 52,781 | 1,029 |
| {fastspec}-fuji-sv3-backup.fits | 1,564 | 0 |
| {fastspec}-fuji-sv3-bright.fits | 265,325 | 133 |
| {fastspec}-fuji-sv3-dark.fits | 592,441 | 3,444 |
| {fastspec}-fuji.fits | 1,397,603 | 9,128 |
This section documents any issues or problems which were identified with the VAC after its final release. So far, none have been identified!
To report projects or to request new features please open a ticket.