Master EUV Catalog: Extreme Ultraviolet Source Compendium from EUVE and ROSAT

NASA's Master EUV Catalog is a compendium of Extreme Ultraviolet (EUV) sources compiled from selected fields of multiple HEASARC database tables. It merges data from the EUVE Bright Source List (356 sources), the 2nd EUVE Source Catalog (801 sources), the ROSAT Wide Field Camera 2RE Catalog (479 sources), and other related catalogs. The catalog was last updated on March 13, 2026.

Use Cases

• Cross-matching and identifying EUV sources based on optical, X-ray, radio, and/or UV identifications mentioned in the description.
• Analyzing source distribution and characteristics from combined all-sky and deep survey data from the EUVE and ROSAT missions.
• Training machine learning models for astronomical object classification using a multi-mission catalog of verified sources.

Strengths

• Integrates data from eight distinct source catalogs, including EUVEBSL (356 sources), EUVECAT2 (801 sources), and ROSWFC2RE (479 sources).
• Excludes obsolete catalogs (EUVECAT1, WFCBSC) in favor of their superseding versions, suggesting curation for relevance.
• Provides plausible identifications for approximately 65% of the EUV sources in EUVECAT2, as stated in the description.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count for the final merged catalog is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality and structure require manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration (NASA), via the HEASARC (High Energy Astrophysics Science Archive Research Center).

Collection Method

Compiled from selected fields of multiple satellite mission catalogs, including the Extreme Ultraviolet Explorer (EUVE) and the ROSAT Wide Field Camera.

Time Range

Observations primarily from the EUVE mission's initial six-month survey (1992) and the ROSAT all-sky survey (July 1990 to January 1991).

Freshness

Last updated 2026-03-13 18:06:12.496469; freshness should be verified.

Geography

All-sky and deep survey coverage, with specific deep surveys along the ecliptic plane.