Visit detector (CcdVisit)

Observation metadata for individual detectors (CCDs; date, time, band, PSF, zeropoint).

Schema: CcdVisit table

Access

The visit detector 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: CcdVisit searchable catalog DOI Logo https://doi.org/10.71929/rubin/2570331

  • Table name: CcdVisit

  • Columns: 51

  • Rows: 16,071

Butler

  • Citation: NSF-DOE Vera C. Rubin Observatory (2025); Legacy Survey of Space and Time Data Preview 1: visit_detector_table dataset type DOI Logo https://doi.org/10.71929/rubin/2570330

  • Dataset type: (‘visit_detector_table’, {instrument}, ArrowAstropy)

  • Format: Parquet

  • Number of Butler datasets: 1

Description

A “visit” is an observation in a single filter, obtained at a given time and sky coordinate. A “detector” is one of the 189 CCDs (charge-coupled devices) that make up LSSTCam. A “CcdVisit” refers to an observation with a single detector as the reference for the observational metadata (e.g., airmass, seeing). This table includes image characterization information measured from the image, including things such as the PSF size, sky background, and image zeropoint.

Tutorials

See the 200-level notebook or 200-level portal tutorials demonstrating how to access the visit detector (CcdVisit) table.