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PDS_VERSION_ID = PDS3
RECORD_TYPE = "STREAM"
OBJECT = TEXT
NOTE = "
AAREADME file for the EPOXI MRI (Medium Resolution Visible CCD)
Earth Observations Raw Data Archive.
"
PUBLICATION_DATE = 2010-09-10
END_OBJECT = TEXT
END
Introduction
============
This data set contains raw, 750-nm filter images of Earth
acquired by the Deep Impact Medium Resolution Visible CCD (MRI)
during the EPOCh and Cruise 2 phases of the EPOXI mission. The MRI
instrument was only used during the first Earth observing period on
18-19 March 2008 and the last two on 27-28 March and 04-05 October
2009. Each 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 serve as
context spectra. On 27-28 September 2009 during the first attempt
at Earth south polar observations, a full set of MRI context
images was acquired although the HRII and HRIV instruments
were turned off by fault protection shortly after the sequence
started.
Data Releases
=============
The releases for this data set are provided here:
Release Number : 1
Release Date : 2009-09-30
Data Coverage : 2008-03-18/078 to 2008-03-19/079
Archive Date : 2009-09-30
Release Number : 2
Release Date : 2010-09-10
Data Coverage : 2009-03-27/086 to 2009-10-05/278
Archive Date : 2010-11-20
Volume Format
=============
This volume 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 volume are organized into a set of subdirectories below
the top-level directory. The following table shows the general
structure and content of these directories but does not exhaustively
list every file in each directory. In the table, directory names
are surrounded by forward slashes (/), and the top-level of the
volume is indicated by a single forward slash. See the *INFO.TXT
files in each top-level sub-directory for specific information about
the files under that directory.
/ Top level of volume
|
|-- AAREADME.TXT This file
|
|-- ERRATA.TXT Known anomalies concerning this volume
|
|-- VOLDESC.CAT Description of the logical 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
| |-- DIF.CAT Description of the Deep Impact flyby spacecraft
| |-- EPOXI.CAT Description of the EPOXI mission
| |-- MRI.CAT Description of the MRI instrument
| |-- PERSONNEL.CAT Personnel involved in creating this archive
| |-- REF.CAT References to works cited in catalog objects
| +-- EARTH.CAT Earth target catalog file
|
|
|--/DATA/ Directory containing raw data products
| |
| +--/YYYY/ Multiple year directories, as needed
| |
| +--/DDD/ Multiple day-of-year directories
| |
| |-- *.FIT FITS file, 2-D CCD image with one extension
| +-- *.LBL PDS label, one for each FITS file
|
|
|--/DOCUMENT/ Directory of documents most useful for
| | understanding this data set; Each document has one
| | PDS label; The full documentation set for Deep
| | Impact and EPOXI is available in the PDS data set
| | DI-C-HRII/HRIV/MRI/ITS-6-DOC-SET-V3.0
| |
| |-- DOCINFO.TXT Description of files in this subdirectory
| |
| |-- CALIBRATION_PAPER_DRAFT.*
| | Incomplete draft of the Deep Impact instrument
| | calibration paper
| |
| |-- DAY_OF_YEAR_CALENDAR.*
| | Perpetual and leap year day of year calendars
| |
| |-- EPOCH_EARTH_GEOM_yyyymmm.*
| | Observational geometry provided by EPOCh team
| | from their analysis of Earth data from the
| | specified period (yyyy = year, mmm = month)
| |
| |-- EPOCH_EARTH_OBS.*
| | Describes EPOCh Earth observations
| |
| |-- EPOCH_EARTH_SEQ_yyyy.*
| | Provides pointing and sequencing information
| | for the EPOCh Earth observations in the
| | specifiec year (yyyy) including descriptions
| | of the HRII scans of Earth (scan direction,
| | rate, etc.)
| |
| |-- EPOCH_OVERVIEW.* Provides an overview of the EPOCh phase of the
| | EPOXI mission
| |
| |-- EPOXI_SIS.* Describes the EPOXI archive volumes, data sets,
| | and data products
| |
| |-- MRI_2_EPOXI_EARTH.*
| | Provides image parameters from the data labels
| | that are most useful for scientific work such
| | exposure duration and observation description
| |
| |-- INSTRUMENTS_HAMPTON.*
| | Submitted version of the publication that
| | describes the Deep Impact instruments in detail
| |
| |-- PDSDD_EPOXI.* Provides the EPOXI local data dictionary used
| | used to verify this PDS data set
| |
| +-- QUATERNION_DESC.*
| Describes how to use the quaternion specified
| in the data labels
|
|
+--/INDEX/ Directory containing index files
|
|-- INDXINFO.TXT Description of files in this subdirectory
|-- 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 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
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 data set should be
directed to:
Stephanie McLaughlin
EPOXI Archive Team
Department of Astronomy, University of Maryland
College Park, Maryland 20742 USA