Source#

Measurements for sources detected in processed visit images.

Schema: Source table

Access#

The source catalog is accessible via the TAP and Butler services.

Recommended access service: TAP

TAP#

  • Citation: NSF-DOE Vera C. Rubin Observatory (2025); Legacy Survey of Space and Time Data Preview 1: Source searchable catalog DOI Logo https://doi.org/10.71929/rubin/2570323 [BibTeX]

  • Table name: Source

  • Columns: 156

  • Rows: 45,565,632

Butler#

  • Citation: NSF-DOE Vera C. Rubin Observatory (2025); Legacy Survey of Space and Time Data Preview 1: source dataset type DOI Logo https://doi.org/10.71929/rubin/2570322 [BibTeX]

  • Dataset type: (‘source’, {band, instrument, day_obs, physical_filter, visit}, ArrowAstropy)

  • Format: Parquet

  • Number of Butler datasets: 1,786

Description#

A “source” is a signal-to-noise ratio > 5 detection in a visit image.

The source catalog contains measurements on a visit image at the coordinates of every source detected in that image.

Measurements include PSF and Gaussian fluxes and sizes, as well as processing pixel flags.

Processing#

The source catalog is the result of Source detection and measurement.

Tutorials#

See the 200-level notebook or 200-level portal tutorials demonstrating how to access the source table.