PDS_VERSION_ID                = PDS3
RECORD_TYPE                   = STREAM
OBJECT                        = TEXT
  PUBLICATION_DATE            = 2000-04-24
  NOTE                        = "Description of the CALIB
     directory contents for the 120-Color Lunar NIR Spectrophotometry
     Data archive"
END_OBJECT                    = TEXT
END


                   CALIB Directory Contents

     The CALIB directory contains calibration data needed to convert the
spectra in this archive to bi-directional spectra.  See the file
DOCUMENT/CALIB.TXT (or CALIB.HTM) for more information.

     The following files are found in this directory.

CALINFO.TXT   - The file you are reading.

JBADHR.TAB    - The original J. B. Adams directional hemispheric Apollo 16 
                soil 62231 data used to calibrate the telescopic data in
                this archive. The first column is wavelength in nanometers;
                the second column is directional hemispheric reflectance.

JBADHR.LBL    - PDS label that describes JBADHR.TAB.

JBADHRWC.TAB  - J. B. Adams directional hemispheric Apollo 16 soil 62231
                data that have been wavelength corrected. The first column
                is wavelength in nanometers, the second column is
                wavelength-corrected directional hemispheric
                reflectance. The wavelength correction algorithm is based
                on interlaboratory comparisons for several samples. The
                function used was an inverse tangent relationship in energy
                space yielding a correction of between +10-15 nanometers in
                the 0.9 to 2.6 micrometer region. The error in the visible
                is negligible.

JBADHRWC.LBL  - PDS label that describes JBADHRWC.TAB.

RELABBDR.TAB  - Bi-directional reflectance data for Apollo 16 soil 62231
                used for Clementine calibrations, obtained in the RELAB at
                i=30 degrees, e=0 degrees.  The first column is wavelength
                in nanometers, the second column is bi-directional
                reflectance. See Pieters, 1999 [PIETERS1999].

RELABBDR.LBL  - PDS label that describes RELABBDR.TAB.

CORRBDR.TAB   - Correction factors that should be used to convert the 120
                channel lunar data to bi-directional reflectance.  The
                first column is wavelength in nanometers, the second column
                is the correction factor. These factors include both the
                wavelength and the geometry corrections. The 62231
                reflectance data were resampled to the wavelengths of the
                120 channel data to produce these correction factors.
                Since the J. B. Adams data required wavelength corrections,
                there are no directly measured values for the last three
                channels.

CORRBDR.LBL   - PDS label that describes CORRBDR.TAB.