PDS_VERSION_ID = PDS3 RECORD_TYPE = "FIXED_LENGTH" RECORD_BYTES = 80 OBJECT = TEXT NOTE = " AAREADME file for version 1.1 of the Deep Impact Raw MRI Navigation Image Archive for the cruise phase to comet 9P/Tempel 1. This archive supersedes version 1.0." PUBLICATION_DATE = 2007-10-31 END_OBJECT = TEXT END Introduction ============ This data set contains raw calibration and test images acquired by the Deep Impact Medium Resolution Instrument Visible CCD during the cruise phase of the mission. These observations were used for optical and autonomous navigation (NAV) of the flyby spacecraft. These data were collected from 14 January to 25 April 2005. Test images of comet 9P/Tempel 1 were acquired on 25 April. In this version 1.1 of the data set, the values for the INTEGRATION_DURATION keyword in the PDS data labels were corrected. This revised data set supersedes version 1.0. 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 | |--[CATALOG] Directory containing PDS catalog objects | | | |-- CATINFO.TXT Description of files in this subdirectory | |-- DATASET.CAT Description of this data set | |-- MRI.CAT Description of the MRI 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 | |-- CALIBRATION.CAT Description of a calibration target | |--[DATA] Directory containing data products | | | |--[YYYY] Multiple year directories, as needed | | | |--[DDD] Multiple day-of-year directories | | | |-- *.FIT Two-dimensional, FITS image files (data products) | |-- *.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