Data Set Overview : NASA's International Halley Watch (IHW) has created a Comet Halley Archive. The collection of data spans the full wavelength range as submitted by scientists to the IHW. The observations belong to one of the following Disciplines: Amateur, Astrometry, Infrared Studies, Large-Scale Phenomena, Meteor Studies, Near-Nucleus Studies, Photometry and Polarimetry, Radio Studies, and Spectroscopy and Spectrophotometry. The data collected by these nine disciplines were augmented by Spacecraft measurements. The data were submitted to IHW, but the evaluation and selection for the Archive has been the primary responsibility of the Discipline Specialist Teams for each network in cooperation with the Lead Center. The data from the Near Nucleus Studies Network contains 3523 images of Halley. These data span dates 1982 October 16 through 1989 April 12.   Processing Level Id : 3 Software Flag : N   Parameters : Data Set Parameter Name : RELATIVE INTENSITY Data Set Parameter Unit : PIXEL   Description ----------- Relative intensity is the energy per unit area, time, frequency and solid angle received by a linear detector such as a CCD in which the instrumental and observing responses have been removed by a 'flat fielding' process which is done to remove instrumental effects.   Source Instrument Parameters : Instrument Host ID : NNSN Data Set Parameter Name : RELATIVE INTENSITY Instrument Parameter Name : N/A Important Instrument Parameters : 0   Measurement Information :  Atmospheric Conditions ---------------------- N/A   Source ------ N/A   Calibration Standard -------------------- N/A   Wavelength Calibration ---------------------- N/A   Processing : N/A

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