PDS_VERSION_ID = PDS3 RECORD_TYPE = "STREAM" OBJECT = TEXT NOTE = " AAREADME file for version 2.0 of the Deep Impact HRII (High Resolution Infrared Spectrometer) Calibrated Spectral Image Archive for the 9P/Tempel 1 Encounter." PUBLICATION_DATE = 2006-12-22 END_OBJECT = TEXT END Introduction ============ This data set contains version 2.0 of calibrated spectral images of comet 9P/Tempel 1 acquired by the Deep Impact High Resolution Instrument Infrared Spectrometer (HRII) during the encounter phase of the mission. Version 2.0 includes uncleaned and cleaned radiance data (RADREV and RAD, respectively) with improved calibration and geometry. The data were collected from 20 June through 6 July 2005. Spectra taken before 20 June 2005 are not included in this data set because the spectrometer was not pointing at the target. Volume Format ============= This volume has been formatted according to the ISO-9660 level 2 Interchange Standard for directories and file names. File Formats ============ All text documents and other meta information files such as descriptions, PDS object definitions and detached PDS labels are stream format files, with a carriage return (ASCII 13) and a line feed character (ASCII 10) at the end of the record. This allows the files to be read by various operating systems. Volume Contents =============== Files on this volume are organized into a set of subdirectories below the top-level directory. The following table shows the structure and content of these directories. In the table, directory names are enclosed in square brackets ([]). See the *INFO.TXT files in some directories for specific information on the files in that directory. [TOP-LEVEL-DIRECTORY] | |-- AAREADME.TXT This file | |-- VOLDESC.CAT Description of the contents of this volume | |--[BROWSE] Directory of thumbnails and JPEGs representing | | the RADREV data products in this data set | |-- BROWINFO.TXT Description of files in this directory | |-- BROWSE.HTM/LBL Browse facility implemented as a website | +-- [YYYY_DOY] Daily directories of thumbnails and JPEGs images | |--[CALIB] Directory containing calibration files | | | |-- CALINFO.TXT Description of files in this subdirectory | |-- [ABSCALIR ] Absolute calibration constant tables | |-- [ADCLUT] Uneven ADC bit weighting lookup tables | |-- [BADPIX] Bad pixel maps | |-- [BIAS] Bias correction maps | |-- [DARK] Darks for specific spectra (exposure IDs) | |-- [DECOMPRS] Decompression lossy lookup tables | |-- [DRKMODEL] Master dark frames | |-- [FLAT] Flat fields | |-- [LINDN] Coefficients for linearizing raw data | |-- [PSF] Point-spread function maps | |-- [SPECMAP] Spectral registration maps | |-- [SUNSPEC] Solar spectrum tables | +-- [XTALK] Electronic cross talk correction tables | |--[CATALOG] Directory containing PDS catalog objects | | | |-- CATINFO.TXT Description of files in this subdirectory | |-- DATASET.CAT Description of this data set | |-- HRII.CAT Description of the HRII instrument | |-- DIF.CAT Description of the Flyby spacecraft | |-- DEEP_IMPACT.CAT Description of the Deep Impact mission | |-- PERSONNEL.CAT Description of personnel who created this volume | |-- REFERENCE.CAT List of publications mentioned in catalog files | +-- 9P_TEMPEL_1_1867_G1.CAT Description of mission target, 9P/Tempel 1 | |--[DATA] Directory containing data products | | | |--[RADREV] Calibrated, uncleaned images in radiance units | | | | | +--[YYYY] Multiple year directories, as needed | | | | | +--[DDD] Multiple day-of-year directories | | | | | |-- *RR.FIT Two-dimensional image FITS files with extensions | | +-- *RR.LBL PDS labels, one for each FITS file | | | |--[RAD] Calibrated, cleaned images in radiance units | | | +--[YYYY] Multiple year directories, as needed | | | +--[DDD] Multiple day-of-year directories | | | |-- *R.FIT Two-dimensional image FITS files with extensions | +-- *R.LBL PDS labels, one for each FITS file | |--[DOCUMENT] Directory for related documents; the full | | documentation set for Deep Impact is located | | on PDS volume DIDOC_0001 | |-- DOCINFO.TXT Refers the user to relevant documents | +-- PDSDD_DI.* Deep Impact local data dictionary and index file | +--[INDEX] Directory containing index files; tables of | image parameters are located on the Deep Impact | documentation volume, DIDOC_0001 |-- INDXINFO.TXT Description of files in the INDEX directory |-- INDEX.TAB Table locating data files on this data set |-- INDEX.LBL PDS label for INDEX.TAB |-- CHECKSUM.TAB MD5 checksum file for this data set +-- CHECKSUM.LBL PDS label for CHECKSUM.TAB Whom to Contact for Information =============================== Questions regarding the scientific elements of this data set should be directed to: Michael F. A'Hearn Principal Investigator, Deep Impact Department of Astronomy, University of Maryland College Park, Maryland 20742-2421 USA ma@astro.umd.edu Kenneth P. Klaasen Sequencing and Calibration Lead, Deep Impact Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109 USA kenneth.p.klaasen@jpl.nasa.gov Questions about data formats and geometry-related information should be directed to: Brian Carcich Deep Impact Science Data Center Cornell University 610 Space Sciences Building Ithaca, NY 14853 USA carcich@astro.cornell.edu Questions regarding the PDS elements in this data set should be directed to: Stephanie McLaughlin Deep Impact Archive Team Department of Astronomy, University of Maryland College Park, Maryland 20742-2421 USA stefmcl@astro.umd.edu