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PYNEID

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

DATA REDUCTION PIPELINE

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

The level1 and level2 data designated as rejected have been split into rejected (Stellar only) and flagged. Files flagged for rejection are formally rejected due to low signal-to-noise. The PI will not be charged time for these observations and are hidden from the results table by default. Files identified as flagged did not pass quality control. Derived products may not be good for precision radial velocity work but may be useful for other science cases. Use the Advanced Search page if you wish to access the rejected files.

SEARCH FORM

• 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 exoplanetarchive.ipac.caltech.edu/applications/Inventory/search.html 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.

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

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. When prompted for the username and password in the download script, enter your NEID archive account credentials. For publicly available data, you can just press the return key for the username and password prompts if you do not have a NEID archive account.

COLUMN DESCRIPTIONS

• 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

WEATHER DATA

NEID DOCUMENTATION

• The NEID Spectrograph
• NOAO Information on NEID
• Observers' and Proposers' FAQ
• NEID Splinter Session at the January 2019 AAS

ACCESS FOR COLLABORATORS

The PI must send an e-mail to neid-help@ipac.caltech.edu 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.

ACKNOWLEDGEMENTS

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."