Deep GLIMPSE: Infrared Point Source Catalog of the Far Outer Galaxy

A catalog of high-reliability infrared point sources from the Spitzer Space Telescope's Deep GLIMPSE survey. The data maps 125 degrees of Galactic longitude on the Far Side of the Galaxy, covering longitudes l=265°-350° and 25°-65° with a latitude width of about 2.1°. It was produced by NASA as part of the Warm Mission Spitzer Cycle 8 Exploration Science Program.

Use Cases

• Studying stellar density and distribution in the Far Outer Galaxy based on point source positions.
• Analyzing infrared flux properties of stars based on 3.6 and 4.5 μm band photometry.
• Investigating the Galactic warp structure using source positions that follow the warp at a Galactocentric distance of 13 kpc.
• Assessing local sky brightness and source crowding using the provided areal density and sky brightness metrics.

Strengths

• Covers a large, specific area of 125 degrees of Galactic longitude.
• Provides fluxes with uncertainties and positions with uncertainties for each source.
• Includes quality flags indicating source reliability and known data anomalies.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is limited to two infrared bands (3.6 and 4.5 μm) from the Warm Mission.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Observations from the Spitzer Space Telescope Infrared Array Camera (IRAC) as part of the Deep GLIMPSE Exploration Science Program.

Freshness

Last updated 2026-03-13 16:36:34.079584; freshness should be verified.

Geography

Galactic plane, longitudes l=265°-350° and 25°-65°, latitude width ~2.1°, centered on the Galactic warp.