Data Set Information
DATA_SET_NAME CH1-ORB MOON M3 2 L0 RAW NEAR-IR SPECTRAL IMAGES V1.0
DATA_SET_ID CH1-ORB-L-M3-2-L0-RAW-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : This data set contains uncalibrated, unprocessed, raw near-IR spectral image cubes acquired during November 2008 through August 2009 by the Moon Mineralogy Mapper (M3) instrument during the Chandrayaan-1 mission to the Moon. The data were acquired while the instrument was operated in global or targeted mode. The documentation in the DOCUMENT directory provides detailed information about the data files and their format and content. Processing : The M3 Data Product SIS document located in the DOCUMENT directory describes how the data products in this data set were processed. Data : The raw near-IR data are stored as three-dimensional, band-interleaved image cubes in the DATA directory of this data set. The file naming convention is described in the M3 Data Product SIS located in the DOCUMENT directory. Each data file is accompanied by a detached PDS label file (*.LBL) which describe the content and format. Parameters : The M3 Archive Volume SIS and the M3 Data Product SIS documents located in the DOCUMENT directory provide detailed descriptions of each file contained in this data set. Ancillary Data : M3 calibration data such as wavelength centers, full-width half-max values and radiometric gain factors can be found in the CALIB directory of the archive volume. SPICE kernels used to calculate geometric parameters for these data are located in the GEOMETRY directory. Coordinate System : Raw data products are not dependent on definition of a coordinate system. Software : Software is not included with this data set. However each spectral image cube is accompanied an ASCII text header file compatible with the commercial software package known as ENVI. Note that L0 data is not compatible with PDS' NASAView software package. Media/Format : These products are delivered on a hard-drive or by ftp and are not formatted for a specific medium.
DATA_SET_RELEASE_DATE 2011-02-01T00:00:00.000Z
START_TIME 2008-10-22T12:00:00.000Z
STOP_TIME 2009-08-28T12:00:00.000Z
MISSION_NAME CHANDRAYAAN-1
MISSION_START_DATE 2008-10-22T12:00:00.000Z
MISSION_STOP_DATE 2009-08-28T12:00:00.000Z
TARGET_NAME MOON
TARGET_TYPE SATELLITE
INSTRUMENT_HOST_ID CH1-ORB
INSTRUMENT_NAME MOON MINERALOGY MAPPER
INSTRUMENT_ID M3
INSTRUMENT_TYPE IMAGING SPECTROMETER
NODE_NAME Imaging
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE Confidence Level Overview : Confidence level information will be provided after more thorough analysis of the data. Review : Prior to creation of the final version of this archival data set, its keys elements including samples of data products, PDS labels and catalog files, and the Software Interface Specifications, were examined during a peer review held by PDS Imaging Node in January 2010. Data Coverage and Quality : The M3 image acquisition time will be divided into peak periods or Optical Periods (OP) when lighting is optimal for observation. The Optical Periods occur twice a year and are understood to have two central months of optimal illumination (solar beta angles -30 deg to +30 deg) with two optional two-week wing periods (solar beta angles +/-30 deg to +/-45 deg) on either side of the optimal 2 months (thus, one Optical Period equals 13 weeks). Each 13 week optical period is followed by a 13-week hiatus. The original instrument operations plan included the acquisition of the entire surface of the Moon in low-resolution Global Mode during the first Optical Period (OP1) while OP2, OP3, OP4 were reserved for high resolution Target Mode data acquisition. However, the mission was cut short, just before the halfway point, in August, 2009 when the spacecraft ceased operations. Despite the abbreviated mission and numerous technical and scientific challenges during the flight, M3 was able to cover more than 95% of the Moon in Global Mode. Only minimal high-resolution Target Mode images were acquired, as these were to be the focus of the second half of the mission. The technical challenges encountered during the mission have complicated the data processing and calibration. These challenges include thermal issues, loss of the spacecraft star trackers and a raising of the orbit from 100 km to 200 km on May 19, 2009. Details of these challenges are currently being documented and will be referenced and/or included in the delivery of the M3 PDS Archive Volume. Nonetheless, the data products released in the M3 PDS Archive Volume will contain optimal calibration and characterization. M3 operations were sustained for two Optical Periods. (For more detailed information regarding the spacecraft operation schedule, please see the MISSION.CAT.) Please see the M3 Data Product SIS for more detail/information. Limitations : None.
CITATION_DESCRIPTION Green, R., S. Lundeen, and J. Boardman, CH1-ORB MOON M3 RAW NEAR-IR SPECTRAL IMAGES V1.0, CH1-ORB-L-M3-2-L0-RAW-V1.0, NASA Planetary Data System, 2010.
ABSTRACT_TEXT This data set contains raw near-IR spectral image cubes acquired from November 2008 through August 2009 by the Moon Mineralogy Mapper (M3) instrument during the Chandrayaan-1 mission to the Moon.
PRODUCER_FULL_NAME JPL/M3 POC
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