Available Data

HETDEX survey data include source spectra for over 1 million Lyman Alpha Emitters at 1.9<z<3.5, ~0.5 million OII emitting galaxies at z<0.5, 20K Active Galactic Nuclei, 200 K stars, and an additional 50K low-redshift galaxies. See below for full details on accessing Public Data Release 1.

Check out our interactive fly through website of HETDEX galaxy locations in the COSMOS region.

Catalogs

Currently, HETDEX AGN Catalogs 1 and 2 and HETDEX Source Catalog 1 are available for download as well as a number of additional catalogs. All catalogs are found here: https://web.corral.tacc.utexas.edu/hetdex/HETDEX/catalogs/

Full Source Catalogs

• HETDEX Source Catalog 1. Mentuch Cooper et al. 2022. HETDEX Public Source Catalog 1: 220K Sources including over 50K Lyman Alpha Emitters from an Untargeted Wide-area Spectroscopic Survey.
  • Download HETDEX Source Catalog 1 (5.6 GB all materials)

• HETDEX Source Catalog 2  Mentuch Cooper et al. 2026. HETDEX Public Data Release 1: Source Catalog 2 and Data Cubes from ~90 sq. deg of Integral-Field Optical Spectroscopy.
  • Download HETDEX Source Catalog 2 (15 GB of materials)

Active Galactic Nucleii Catalogs

• HETDEX AGN Catalog 1. Liu et. al 2022. The Active Galactic Nuclei in the Hobby-Eberly Telescope Dark Energy Experiment Survey (HETDEX) I. Sample selection
  • Download HETDEX AGN Catalog 1 (95 MBb)

• HETDEX AGN Catalog 2. Liu et. al 2025.  The Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX) Active Galactic Nuclei Catalog: The Fourth Data Release
  • Download HETDEX AGN Catalog 2 (271 Mb)

Lyman Alpha Nebulae Catalog

• HETDEX LAN Catalog: Mentuch Cooper et al. 2026. Lyman Alpha Nebulae in HETDEX: The Largest Statistical Census Bridging Ly-alpha Halos and Blobs Across Cosmic Noon.  Accepted to  ApJ.
  • Download HETDEX LAN Catalog

Additional Catalogs

• HETDEX-LOFAR Redshift Catalog.  Debski et al 2025. HETDEX-LOFAR Spectroscopic Redshift Catalog.
  • Download HETDEX-LOFAR Catalog (230.4 Mb)
• HETDEX-GAIA Star Catalog. Hawkins et al 2021. Stars of HETDEX. I. RVels & metal-poor stars.
  • Download HETDEX-GAIA Star Catalog (41 MB), CDS Mirror
• HETDEX-DESI VAC. Landriau et al. 2025. DESI Spectroscopy of HETDEX Emission-line Candidates I: Line Discrimination Validation.
  • Download HETDEX-DESI Catalog, DESI Mirror

Public Data Release 1

HETDEX Public Data Release 1 (PDR1) is the completed survey data release, covering all science-quality observations from January 2017 through July 2024. PDR1 includes 431,713 IFU datacubes spanning 86.67 deg² of sky, delivered as 3D FITS files with flux, error, and quality mask extensions at 3470–5540 Å (R~800).

The accompanying HETDEX Public Source Catalog 2 (HPSC2) contains over one million classified sources with spectroscopic redshifts, 1D spectra, and machine-learning quality metrics, including 426,654 Lyman-alpha emitters at 1.88 < z < 3.52.

All PDR1 data are publicly available — no password required. 

Catalog only?:Mentuch Cooper et al. 2026. HETDEX Public Data Release 1: Source Catalog 2 and Data Cubes from ~90 sq. deg of Integral-Field Optical Spectroscopy.  
Data hosting: https://web.corral.tacc.utexas.edu/hetdex/HETDEX/pdr/pdr1/
Tutorial notebooks and Docker container: https://github.com/HETDEX/dexcube

The 12-notebook dexcube tutorial series walks through the full workflow: downloading datacubes, masking, coordinate queries, spectral extraction, catalog access, and batch processing. A self-contained Docker image is also available for local use.

HETDEX JupyterHub (recommended): Access all PDR1 data pre-mounted with no download required. Requires a free TACC account — sign up [here] and request HETDEX access [here].

How to cite HETDEX

Please see the publications page for citation instructions.

HETDEX Jupyter Lab

The easiest way to access PDR1 is through the HETDEX JupyterHub Texas Advanced Computing Center (TACC) Jupyter Lab service, where all data are pre-mounted and tutorial notebooks are pre-installed — no downloading required.

Steps to Access the HETDEX JupyterHub:

1. Get a TACC account here.
2. Sign up for access to the hub in this form.
3. Sign into the HETDEX JupyterHub.
4. Tutorial notebooks are pre-installed at /home/jovyan/dexcube/notebooks/

Public users have no persistent storage — save any outputs to your local machine before ending your session. HETDEX team members have persistent storage available at /home/jovyan/work/. We can consider internal storage through private communication.

Working Locally? Use the Docker Container.

A self-contained Docker image is available for working with PDR1 data on your own machine — no TACC account required. It includes all tutorial notebooks and pre-installed dependencies.

Linux / Intel Mac:

docker run –pull always –rm -p 8888:8888 \
-v “$PWD/work/pdr1″:/home/jovyan/work/pdr1 \
hetdex/dexcube:latest \
jupyter lab –ip=0.0.0.0 –port=8888 –no-browser \
–NotebookApp.token=”

Apple Silicon Mac (M1/M2/M3/M4):

docker run –pull always –rm -p 8888:8888 \
–platform linux/amd64 \
-v “$PWD/work/pdr1″:/home/jovyan/work/pdr1 \
hetdex/dexcube:latest \
jupyter lab –ip=0.0.0.0 –port=8888 –no-browser \
–NotebookApp.token=”

Then open http://127.0.0.1:8888 in your browser. PDR1 data downloaded inside the container will be saved to ./work/pdr1/ on your local machine.
Full instructions and source code: https://github.com/HETDEX/dexcube

Confused? Got questions?

For any questions about HETDEX Data Products and Access please reach out to Erin Mentuch Cooper at erin.hetdex @ gmail.com.