IHW Comet Halley Reduced Spectroscopic Observations, 1984-1988

2732 reduced spectroscopic data files on Comet Halley, calibrated for wavelength and sometimes flux, collected by NASA's International Halley Watch. The collection spans the full wavelength range and includes calibration data from laboratory sources, sky observations, and photometric standards like stars and other celestial objects. Observations cover the date range from 1984 December 23 through 1988 February 17.

Use Cases

• Calibrating spectroscopic instruments based on the described laboratory arcs and lamps (e.g., HE-NE, TH-AR).
• Analyzing comet spectral features using the wavelength-calibrated observations of Halley.
• Comparing comet spectra against the listed stellar calibration targets (e.g., HD 140283, Landolt 98).
• Studying temporal changes in comet composition across the 1984-1988 observation period.
• Using non-Halley calibration data (e.g., sky, bias, flatfield) for general astronomical data processing workflows.

Strengths

• Contains 2732 files of reduced spectroscopic data, indicating a substantial collection.
• Data is calibrated for wavelength and in some cases flux, suggesting a processed, analysis-ready state.
• Includes extensive calibration data from multiple sources (laboratory, sky, photometric standards) which can aid validation.
• Covers a specific, multi-year time range from 1984-12-23 to 1988-02 17 for temporal analysis.

Limitations

• Row count and file size are unknown, which may limit suitability assessment for large-scale processing.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect temporal bias inherent to the specific 1984-1988 Halley observation campaign.

Provenance

Source

National Aeronautics and Space Administration (NASA), International Halley Watch (IHW)

Collection Method

Observations submitted by scientists to the IHW and evaluated by Discipline Specialist Teams.

Time Range

1984-12-23 to 1988-02-17

Freshness

Last updated 2026-03-13 14:04:16.276510; freshness should be verified.

Geography

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