SDWFS: Spitzer Infrared Survey of the Boötes Field

A four-epoch infrared survey of 10 square degrees in the Boötes field, conducted using the IRAC instrument on the Spitzer Space Telescope. The dataset consists of 20 band-matched catalogs from the Spitzer Deep, Wide-Field Survey (SDWFS), a Cycle 4 Legacy project, providing Vega magnitudes in four IRAC bands. It was created by the National Aeronautics and Space Administration and last updated in March 2026.

Use Cases

• Selecting infrared-variable objects based on multi-epoch observations over years.
• Identifying high proper motion objects across a wide field.
• Characterizing galaxy evolution beyond redshift z ~ 1.5 based on large survey volume.
• Analyzing photometric data using three different aperture measurements (4", 6", Kron radius).

Strengths

• Covers a wide 10-square-degree field, reducing impact from cosmic variance for most systems.
• Provides four epochs of data, enabling temporal analysis over years.
• Source coordinates are aligned to 2MASS catalog positions within 0.2 arcsec.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Infrared survey using the IRAC instrument on the Spitzer Space Telescope.

Time Range

Four epochs over years (specific dates not provided).

Freshness

Last updated 2026-03 13 18:41:49.182478; freshness should be verified.

Geography

Observations of the Boötes field.