GLIMPSE SMOG Archive: Infrared Point Sources from the Outer Galaxy

The Spitzer Mapping of the Outer Galaxy (SMOG) project mapped a 21 square degree area of the Outer Galaxy using the Spitzer Space Telescope's IRAC and MIPS instruments. The data have been processed by the Wisconsin GLIMPSE IRAC pipeline, resulting in a point source Archive. The dataset is provided by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Identify and catalog infrared point sources in the Outer Galaxy based on the processed IRAC data.
• Compare source reliability between the high-reliability Catalog and the more complete Archive mentioned in the description.
• Study galactic structure and star formation in the region between galactic longitudes 102 and 109 degrees.

Strengths

• Covers a 21 square degree area of the Outer Galaxy, providing a substantial spatial sample.
• Data processed by a dedicated pipeline (Wisconsin GLIMPSE IRAC), suggesting standardized quality.
• Includes two distinct source lists (Catalog and Archive) for different analysis needs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale analysis.
• Data is stored in a BIN format, which may require specialized tools for access and interpretation.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Infrared mapping from the Spitzer Space Telescope, processed by the Wisconsin GLIMPSE IRAC pipeline.

Time Range

Observations likely from the Spitzer mission era (2003-2020).

Freshness

Last updated 2026-03-13 18:40:36.627700; freshness should be verified.

Geography

Outer Galaxy region (galactic longitude l=102 to 109 degrees, latitude b=0 to 3 degrees).