PDS_VERSION_ID = PDS3 RECORD_TYPE = "FIXED_LENGTH" RECORD_BYTES = 80 OBJECT = TEXT NOTE = " AAREADME file for the Deep Impact Reduced ITS Navigation Image Archive from the encounter with comet 9P/Tempel 1" PUBLICATION_DATE = 2006-09-29 END_OBJECT = TEXT END Introduction ============ This data set contains calibrated images of comet 9P/Tempel 1 acquired by the Deep Impact Impactor Targeting Sensor Visible CCD during the encounter phase of the mission. These observations were used for optical and autonomous navigation (NAV) of the impactor spacecraft as well as for scientific investigations. These data were collected on 3-4 July 2005. 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 | |--[CALIB] Directory containing calibration files | | | |-- CALINFO.TXT Description of files in this subdirectory | |-- [ABSCALVS] Absolute calibration constant tables | |-- [ADCLUT] Uneven ADC bit weighting lookup tables | |-- [BADPIX] Bad pixel maps | |-- [BIAS] Bias corrections maps | |-- [DRKMODEL] Master dark frames | |-- [FLAT] Flat fields | |-- [GAIN] Gain correction maps | |-- [PSF] Point-spread function maps | |-- [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 | |-- ITS.CAT Description of the ITS instrument | |-- DII.CAT Description of the Impactor 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] Reduced, uncleaned images in units of radiance | | | |--[YYYY] Multiple year directories, as needed | | | |--[DDD] Multiple day-of-year directories | | | |-- *RR.FIT Two-dimensional image FITS files | |-- *RR.LBL PDS labels, one for each FITS file | |--[DOCUMENT] Directory for related documents | | | |-- DOCINFO.TXT Refers the user to relevant documents | |-- PDSDD_DI.* Deep Impact local data dictionary and index file | |--[INDEX] Directory containing index files | |-- INDXINFO.TXT Description of files in the INDEX directory |-- INDEX.TAB Table of all FITS data files in this data set |-- INDEX.LBL PDS label for INDEX.TAB |-- CHECKSUM.TAB Checksum file for this volume |-- 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 Nick Mastrodemos Navigation Team, Deep Impact Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109 USA Nickolaos.Mastrodemos@.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