GALEX: Galaxy Evolution Explorer Observation Log

NASA's Galaxy Evolution Explorer (GALEX) observation log contains extant and planned observations from the satellite observatory launched on April 28, 2003. The table is provided by the HEASARC to assist the high-energy astrophysics community and is updated within a week of its source file. GALEX performed the first space ultraviolet sky survey across imaging and spectroscopic modes.

Use Cases

• Cross-correlation of ultraviolet and X-ray observations based on the stated purpose of enabling such analysis.
• Planning complementary observations based on the log of extant and planned GALEX observations.
• Studying galaxy evolution and star formation based on the ultraviolet spectral range (1350-2800 Angstroms) covered by the surveys.
• Statistical analysis of sky survey depth and coverage based on the described imaging and grism survey parameters.

Strengths

• Data originates from a NASA Small Explorer Mission with a defined launch date of April 28, 2003.
• Surveys cover specific ultraviolet bands (FUV: 1350 1750 Angstroms, NUV: 1750 2800 Angstroms) and include both imaging and spectroscopic modes.
• Table is updated within a week of its source file update, suggesting a maintained pipeline.

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 (NASA), HEASARC

Collection Method

Table created from an input CSV file obtained from the Caltech GALEX site.

Time Range

Observations from the GALEX mission operational since 2003.

Freshness

Last updated 2026-03-13 20:12:17.183580; freshness should be verified.

Geography

Sky surveys covering areas from an all-sky survey to deep fields of 4 square degrees.