CGRO Timeline: Pointed Telescope Observations from NASA's Compton Observatory
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Description
A database table of pointed telescope observations from NASA's Compton Gamma-Ray Observatory (CGRO), launched in 1991 and de-orbited in 2000. The table contains observations for Cycles 1 through 9, with viewing periods typically two weeks long, and was last updated in November 2001. The information was provided by the Compton Observatory Science Support Center, with galactic coordinates added by the HEASARC in 2005.
Use Cases
Analyze temporal patterns of gamma-ray observations based on the described two-week viewing periods.
Study the operational history and target selection of the OSSE, CompTel, and EGRET instruments based on the mission description.
Correlate observation cycles with specific astronomical events or targets mentioned in the broader mission context.
Strengths
Covers 9 years of operational data from a major NASA Great Observatory.
Includes data from multiple specialized instruments (OSSE, CompTel, EGRET) covering a broad spectral range.
Data provenance is clear, provided by the Compton Observatory Science Support Center and later curated by NASA HEASARC.
Limitations
Column-level documentation is absent; field semantics must be inferred after download.
Row count is unknown, which may limit suitability assessment.
Data was last updated in 2001, so it is a historical archive and not updated with current observations.
Provenance
Source
National Aeronautics and Space Administration (NASA), Compton Observatory Science Support Center (COSSC), NASA HEASARC.
Collection Method
Compiled from mission operations and science support center records.
Time Range
Observations from mission cycles spanning the operational period (1991-2000).
Freshness
Last updated 2026-03-13 18:25:37.407742; freshness should be verified as the underlying observation data is from 1991-2000.
Geography
Space-based observations; celestial coordinates with added galactic coordinates.
License is listed as 'other-license-specified'; users must verify terms before use. File formats include BIN and HTML.