Data Set Information
DATA_SET_NAME IHW COMET HALLEY REDUCED SPECTROSCOPIC OBSERVATIONS V1.0
DATA_SET_ID IHW-C-SPEC-3-EDR-HALLEY-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION 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 Spectroscopy and Spectrophotometry Network collected 2732 files of data which were classified as 'reduced', which means that at least wavelength is calibrated and in some cases flux as well. Some data on non-Halley targets for the spectroscopic observations can be grouped according to 'laboratory' calibration, dark, bias, flatfield, sky, and photometric standards. In the first category, a large number of 'arcs' and 'lamps' were used as follows: HE-NE, TH-AR, NE-AR, CU-AR, CU-NE, Thorium, Tungsten, Quartz, and Rubidium. For the 'sky' observers used the twilight, moonlight, and blank sky. The most common 'photometric' standards were stars, but observers also included other comets (Hartley-Goode), asteroids (Ceres), reflection nebulae (R8), and emission nebulae (NGC1982, NGC7000). A list of these stellar calibration targets follows: HD 140283, HD 184711, HD89688, HD102870, HD120086, HD13974, HD219188, HD 25680, HD 19445, HD18803, HD30455, HD26912, SAO 1280, HZ15, CD-22 7696, GD 190, GC5106, GC2188, GC2192, G19113213, G 99-37, L745-46A, Feige 15, Feige 56, Landolt 98, Landolt 92, Van Beuren, RHO ORION, CHI 1 ORION, 29 PI LEO. These data consisted of both one and two dimensional data covering the date range from 1984 December 23 through 1988 February 17. Processing Level Id : 3 Software Flag : N Parameters : Data Set Parameter Name : COUNT Description ----------- A generic unit for measuring the output of any system with quantized outputs. This may correspond to the number of detected photoelectrons in a photomultiplier tube-amplifier-counter, or it may refer to the output of an A-to-D converter at the output of a CCD chip, or it may refer to the number of particles counted by a dust-particle counter. The value of 'COUNT' may be non-linear in the incident quantity which is being measured, although the term is more commonly used in cases where it is a linear measurement of the incident, measured quantity. Source Instrument Parameters : Instrument Host ID : SPEC Data Set Parameter Name : COUNT 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
DATA_SET_RELEASE_DATE 1992-09-30T00:00:00.000Z
START_TIME 1984-12-23T07:33:29.952Z
STOP_TIME 1988-02-17T04:05:51.072Z
MISSION_NAME INTERNATIONAL HALLEY WATCH
MISSION_START_DATE 1980-09-01T12:00:00.000Z
MISSION_STOP_DATE 1992-09-30T12:00:00.000Z
TARGET_NAME CERES
CAL LAMPS
DARK
SKY
COMET
HALLEY
EMISSION NEBULA
REFLECTION NEBULA
STAR
TARGET_TYPE ASTEROID
CALIBRATION
COMET
NEBULA
STAR
INSTRUMENT_HOST_ID SPEC
INSTRUMENT_NAME IHW SPECTROSCOPY AND SPECTROPHOTOMETRY
INSTRUMENT_ID SPEC
INSTRUMENT_TYPE SPECTROMETER
NODE_NAME Small Bodies
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE Overview : N/A
CITATION_DESCRIPTION Wychoff S., and Wehinger P., IHW COMET HALLEY REDUCED SPECTROSCOPIC OBSERVATIONS V1.0, IHW-C-SPEC-3-EDR-HALLEY-V1.0, NASA Planetary Data System, 1992.
ABSTRACT_TEXT 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 Spectroscopy and Spectrophotometry Network collected 2732 files of data which were classified as 'reduced', which means that at least wavelength is calibrated and in some cases flux as well. Some data on non-Halley targets for the spectroscopic observations can be grouped according to 'laboratory' calibration, dark, bias, flatfield, sky, and photometric standards. In the first category, a large number of 'arcs' and 'lamps' were used as follows: HE-NE, TH-AR, NE-AR, CU-AR, CU-NE, Thorium, Tungsten, Quartz, and Rubidium. For the 'sky' observers used the twilight, moonlight, and blank sky. The most common 'photometric' standards were stars, but observers also included other comets (Hartley-Goode), asteroids (Ceres), reflection nebulae (R8), and emission nebulae (NGC1982, NGC7000). A list of these stellar calibration targets follows: HD 140283, HD 184711, HD89688, HD102870, HD120086, HD13974, HD219188, HD 25680, HD 19445, HD18803, HD30455, HD26912, SAO 1280, HZ15, CD-22 7696, GD 190, GC5106, GC2188, GC2192, G19113213, G 99-37, L745-46A, Feige 15, Feige 56, Landolt 98, Landolt 92, Van Beuren, RHO ORION, CHI 1 ORION, 29 PI LEO. These data consisted of both one and two dimensional data covering the date range from 1984 December 23 through 1988 February 17.
PRODUCER_FULL_NAME GRAYZECK, E.J., KLINGLESMITH, D.A., III, NIEDNER, M.B., JR
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