SDWFS: Spitzer Infrared Survey of the Boötes Field, 4 Epochs

A four-epoch infrared survey of 10 square degrees in the Boötes field, conducted using the IRAC instrument on the Spitzer Space Telescope. The Spitzer Deep, Wide-Field Survey (SDWFS) provides band-matched catalogs for four epochs and a total coadd, reporting Vega magnitudes in four IRAC bands. The data was produced by the National Aeronautics and Space Administration as a Spitzer Cycle 4 Legacy project.

Use Cases

• Selecting infrared-variable objects based on multi-epoch observations over years.
• Identifying high proper motion objects across a wide field using the four-epoch structure.
• Characterizing galaxy evolution at high redshift (z ~ 3) based on the survey's large volume and reduced cosmic variance.
• Comparing photometric measurements from different aperture methods (4", 6", Kron radius) for source analysis.

Strengths

• Covers a wide 10-square-degree field in the Boötes region.
• Provides data from four distinct epochs, enabling time-domain analysis.
• Reports source coordinates aligned with 2MASS catalog positions within 0.2 arcsec.
• Includes photometry in four infrared bands (3.6, 4.5, 5.8, and 8 microns).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the IRAC instrument on the Spitzer Space Telescope, processed into band-matched catalogs.

Time Range

Coverage spans four distinct observation epochs.

Freshness

Last updated 2026-03-13 16:28:36.655619; freshness should be verified.

Geography

Observations cover 10 square degrees in the Boötes field.