PDS_VERSION_ID = PDS3 RECORD_TYPE = "STREAM" OBJECT = TEXT NOTE = " AAREADME file for the EPOXI MRI (Medium Resolution Visible CCD) Mars Observations Calibrated Data Archive. " PUBLICATION_DATE = 2012-12-31 END_OBJECT = TEXT END Introduction ============ This dataset contains calibrated 750-nm filter images of Mars acquired by the Deep Impact Medium Resolution Visible CCD (MRI) for the EPOCh project during the second cruise phase of the EPOXI mission. One set of observations was acquired on 20-21 November 2009 to characterize Mars as an analog for extrasolar planets. The observing period lasted approximately 24 hours, and one MRI image was taken simultaneously with the first north/south scan of the HRI IR spectrometer at half-hour intervals to provide context for the spectral scans. Version 2.0 includes the application of a horizontal destriping process, new absolute calibration constants for filters, and revised electronic crosstalk calibration files. Volume Format ============= This single-volume dataset has been formatted according to the ISO-9660 level 2 Interchange Standard for directories and file names as described in Version 3.7 of the PDS Standards Reference. 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 single-volume dataset are organized into a set of subdirectories below the top-level directory. The following table shows the general structure and content. The top-level of the volume is indicated by a single forward slash (/) and subdirectory names are surrounded by forward slashes (/). See the *INFO.TXT files located in each subdirectory for specific information about the contents the subdirectory. / Top level of this volume (dataset) | |-- AAREADME.TXT This file | |-- VOLDESC.CAT Description of logical contents of this volume | |--/CALIB/ Directory containing calibration files | |--/CATALOG/ Directory containing PDS catalog files providing | overviews of the mission, instrument, and dataset | |--/DATA/ Directory containing calibrated data products | | | |--/RADREV/ Reversibly calibrated images in radiance units | | | | | +--/YYYY/ Multiple year directories, as needed | | | | | +--/DDD/ Multiple day-of-year directories | | | | | |-- *.FIT FITS file, 2-D CCD image with three extensions | | +-- *.LBL PDS label, one for each FITS file | | | +--/RAD/ Irreversibly calibrated images in radiance units | | | +--/YYYY/ Multiple year directories, as needed | | | +--/DDD/ Multiple day-of-year directories | | | |-- *.FIT FITS file, 2-D CCD image with three extensions | +-- *.LBL PDS label, one for each FITS file | |--/DOCUMENT/ Directory containing documents most useful for | understanding this dataset | |--/EXTRAS/ Directory containing value-added items | +--/INDEX/ Directory containing PDS index files Whom to Contact for Information =============================== Questions regarding the scientific elements of this dataset should be directed to: Michael A'Hearn Principal Investigator, EPOXI Department of Astronomy, University of Maryland College Park, Maryland 20742 USA Drake Deming Co-PI, EPOXI Principal Investigator, EPOCh Investigation Department of Astronomy, University of Maryland College Park, Maryland 20742 USA Tim Livengood Co-Investigator, EPOCh Investigation Goddard Space Flight Center Greenbelt, MD 20771 USA Tilak Hewagama Science Team, EPOCh Investigation Goddard Space Flight Center Greenbelt, MD 20771 USA Kenneth Klaasen Calibration and Sequencing Lead, EPOXI Jet Propulsion Laboratory 4800 Oak Grove Drive Pasadena, CA 91109 USA Dennis Wellnitz Sequencing Lead, EPOCh Investigation Department of Astronomy, University of Maryland College Park, Maryland 20742 USA Questions about data formats and geometry-related information should be directed to: Brian Carcich EPOXI Science Data Center Department of Astronomy, Cornell University 610 Space Sciences Building Ithaca, NY 14853 USA Questions regarding the PDS elements in this dataset should be directed to: Stephanie McLaughlin EPOXI Archive Team Department of Astronomy, University of Maryland College Park, Maryland 20742 USA