NEID Archive


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Programmatic access to the tables of metadata and associated data products is provided via the PyNEID Python package. Documentation is available here.


Documentation for the NEID Data Reduction Pipeline is available here. The Changelog is available here.


The basic form enables searching the archive based on the following fields:
  • Observation date (UTC): a calendar widget provides shortcuts to useful date ranges, or custom date ranges may be entered in mm/dd/yyyy format
  • Program ID: NOAO proposal/program ID (e.g. 2019B-2222). Wildcards are allowed: use %2014 to return all standard star programs.
  • PI last name: Last name of the principal investigator. Partial and lowercase names are allowed.
  • Coordinates or Object name: See for allowed catalogues and formatting for object names. Coordinates may be entered in either sexagesimal or decimal degrees (J2000). All data containing objects within 30 arcseconds of the input coordinates are returned. Click the icon next to the search box for examples.
  • Data level: Select which level(s) you wish to search on (Engineering, Level 0, Level 1, Level 2)

The results of the search are displayed in an interactive table below the search form. Columns may be sorted, filtered, or hidden using the icons at the top of the table. Hover over the filter box to see the options for column filtering.

Program IDs are added to the database before any data is collected. Querying by program ID will return an empty result until your observations begin to be executed and are processed by the pipeline.

To download an individual file, click on the file name. Click on the "Create script to download files" button to generate a script containing wget commands to download all the files you have access to. If you have filtered the results table, only the visible rows will be included in the download.

All Level 0 metadata are public and visible to all users.


The columns returned by the Search form are:
  • filename: name of the Engineering, Level 0, Level 1, or Level 2 FITS file. For Level 0, all metadata, including the filename, are public, but you will only see a link to the file if you have permission to access that program or the data are public.
  • object: custom object name entered by the PI
  • qobject: object name used for the barycentric corrections
  • qra: RA in sexagesimal
  • qdec: Dec in sexagesimal
  • obsdate: date of observation in YYYY-MM-DD HH:MM:SS (UTC)
  • exptime: exposure time in seconds
  • obsmode: observing mode (hr = high resolution, he = high efficiency)
  • obstype: obervation type (Cal = Calibration, Sci = Science, Eng = Engineering)
  • program: NOAO proposal ID
  • piname: PI name
  • sunagl: Sun angle in degrees
  • airmass (L1 and L2 only): airmass
  • seeing (L1 and L2 only): seeing in arcsec
  • moonagl (L1 and L2 only): target-moon angle in degrees
  • swversion (L1 and L2 only): pipeline version used to process the data
  • extsnr (L1 and L2 only): measured signal-to-noise (SNR) per pixel at the wavelength specified in the observation request. If no wavelength is specified then the SNR is calculated at 5530 Angstroms
  • ccfjdsum (L2 only): Barycentric Julian Day (BJD)
  • ccfrvmod (L2 only): RV value in km/s
  • dvrms (L2 only): error in RV value
  • flagged (L1 and L2 only); ('x' = flagged, blank = not flagged) Files did not pass quality control. Derived products may not be good for precision radial velocity work but may be useful for other science cases
  • rejected (Stellar L1 an L2 only); ('x' = rejected, blank = not rejected) Previously also encompassed flagged state, but file quality has been split into flagged and rejected designations. Rejected files have low signal-to-noise


WIYN Night Logs are available here.



The PI must send an e-mail to to request that access be given to other collaborators. Please include first names, last names, e-mail addresses, and the programs that the collaborators should be granted access to. The sender must be the PI for all programs listed. Only the PI may make such requests.


If you use NEID data in a publication, please include the following acknowledgement:

"This paper contains data taken with the NEID instrument, which was funded by the NASA-NSF Exoplanet Observational Research (NN-EXPLORE) partnership and built by Pennsylvania State University. NEID is installed on the WIYN telescope, which is operated by the National Optical Astronomy Observatory, and the NEID archive is operated by the NASA Exoplanet Science Institute at the California Institute of Technology. NN-EXPLORE is managed by the Jet Propulsion Laboratory, California Institute of Technology under contract with the National Aeronautics and Space Administration."