Guadalupe VAC (DR1 Supplement)

Overview

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 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 Content & Access

Data from the Guadalupe VAC can be accessed at any of the following links:

Data url

https://data.desi.lbl.gov/desi/spectro/fastspecfit/guadalupe/v3.0

NERSC (for collaborators)

/global/cfs/cdirs/desi/spectro/fastspecfit/guadalupe/v3.0

For more information regarding the content and organization of the VAC, please click on the following links:

Summary Statistics

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.

File Name

File Size

Number of Targets

fastspec-guadalupe-special-dark.fits

17.4 MB

3,848

fastspec-guadalupe-special-bright.fits

43.1 MB

9,598

fastspec-guadalupe-main-bright.fits

4.77 GB

1,092,041

fastspec-guadalupe-main-dark.fits

4.94 GB

1,131,858

fastspec-guadalupe.fits

9.79 GB

2,237,345

The following table summarizes the number of QSO targets whose redshift has been updated using the procedure documented here.

Catalog

Number of Objects

Number with Corrected Redshifts

{fastspec}-guadalupe-main-bright.fits

1,092,041

156

{fastspec}-guadalupe-main-dark.fits

1,131,858

22,445

{fastspec}-guadalupe-special-bright.fits

9,598

0

{fastspec}-guadalupe-special-dark.fits

3,848

111

{fastspec}-guadalupe.fits

2,237,345

22,712

Known Issues

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.