SAGE IRAC Offset Position Archive: Spitzer Telescope Calibration Field

The Large Magellanic Cloud galaxy was surveyed by the Spitzer Space Telescope's SAGE Legacy Project to trace the life cycle of observable matter. The project has revealed over 6 million sources, including approximately 150,000 evolved stars and 50,000 young stellar objects. This specific dataset is a calibration field archive from the survey, maintained by the National Aeronautics and Space Administration and last updated in March 2026.

Use Cases

• Calibrating infrared photometry pipelines based on the described offset position at RA=82.25d Dec=-45.95d.
• Analyzing the properties of the diffuse interstellar medium based on column densities > 1.2×10^21 cm^-2 mentioned in the description.
• Comparing source detection and flux uncertainty between catalog and archive products based on the different signal-to-noise and neighbor exclusion criteria described.
• Studying the relationships between evolved stars, young stellar objects, and galaxy-wide processes in the Large Magellanic Cloud.

Strengths

• Contains over 6 million sources, providing a large-scale view of the galaxy.
• Includes approximately 150,000 evolved stars and 50,000 young stellar objects, enabling population studies.
• Archive data includes more source fluxes with fewer nulled wavelengths compared to the catalog version.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• The archive additions have more uncertainty associated with them compared to the catalog.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observational data from the Spitzer Space Telescope's SAGE Legacy Project survey.

Time Range

null

Freshness

Last updated 2026-03-13 18:54:02.555432; freshness should be verified.

Geography

Large Magellanic Cloud, with a specific calibration field at RA=82.25d Dec=-45.95d.