GLIMPSE II Catalog: Infrared Point Sources of the Galactic Center

A catalog of infrared point sources from the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire II (GLIMPSEII) mission. The survey imaged the central region of the Milky Way Galaxy with specific latitude and longitude coverage, excluding the very center. Observations were conducted in two epochs in September 2005 and April 2006 by the National Aeronautics and Space Administration.

Use Cases

• Identify and catalog stellar objects in the Galactic mid-plane based on infrared point source detections.
• Study stellar variability based on two-epoch observations taken six months apart.
• Analyze photometric reliability and limiting magnitudes in regions of varying background and source density.
• Map the distribution of stars and other point sources in specific Galactic longitude and latitude ranges.

Strengths

• Sources selected for a reliability threshold of >99.5%.
• Photometric uncertainty is typically < 0.2 magnitudes.
• Observations include two-epoch coverage for temporal analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Coverage excludes the Galactic center region (l=±1◦, b=±0.75◦).

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the GLIMPSEII survey using the Spitzer Space Telescope.

Time Range

Observations from September 2005 and April 2006.

Freshness

Last updated 2026-03-13 17:55:02.613402; freshness should be verified.

Geography

Covers the central region of the Milky Way Galaxy, with longitude coverage of ±10◦ and variable latitude coverage.