PDS_VERSION_ID                = PDS3
RECORD_TYPE                   = STREAM
OBJECT                        = TEXT
 PUBLICATION_DATE             = 2010-02-01
 NOTE                         = "Introduction to this archive (AAREADME.TXT)"
END_OBJECT                    = TEXT
END

The Apache Point Observatory AGILE Observations of the LCROSS Impacts
========================================================================

Introduction
============

   This document provides an overview of this archive, including a 
   description of the volume structure. For complete documentation see the 
   files in the CATALOG directory of this volume.

   This volume contains data collected from the Apache Point Observatory 
   3.5m Telescope AGILE instrument during observations of the impact of the
   LCROSS spacecraft on the moon on October 9, 2009.

File Formats
============

   Data products in this archive are in the form of FITS images with 
   detached PDS labels. 

   PDS labels (*.LBL), catalog files (*.CAT), and text documents (*.TXT) 
   are ASCII stream format files, with a carriage return (ASCII 13) and a line
   feed character (ASCII 10) at the end of each line.  This allows the
   files to be read by MS-DOS/Windows, Unix and MacOS operating systems.
   
   Index tables (*.TAB) in the INDEX directory are ASCII text files with
   fixed-length records. Columns in the table are separated by commas. 

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 each directory for specific information on the files in the
   directory, including naming schemes.

           Root directory
            |
            |- AAREADME.TXT        The file you are reading.
            |
            |- ERRATA.TXT          Release notes, including any known 
            |                      errors or problems in the archive.
            |
            |- VOLDESC.CAT         Volume description for the PDS catalog.
            |
            |- [CALIB]             The calibration data set.
            |     |              
            |    [BIAS]            The bias data set.
            |     |
            |     |- BIA#####.LBL  The bias file with detached PDS label.
            |     |
            |     |- BIA#####.FIT  The FITS bias file.
            |          
            |    [DARK]            The dark data set.
            |     |    
            |     |- DAR#####.LBL  The dark file with detached PDS label.
            |     |
            |     |- DAR#####.FIT  The FITS dark file.
            |          
            |    [FLAT]            The flat data set.
            |     |    
            |     |- DFL#####.LBL  The dome flat file with detached PDS label.
            |     |
            |     |- DFL#####.FIT  The FITS dome flat file.
            |     |
            |     |- SFL#####.LBL  The sky flat file with detached PDS label.
            |     |
            |     |- DFL#####.FIT  The FITS sky flat file.
            |          
            |    [STDS]            The standards data set.
            |     |    
            |     |- AAA#####.LBL  The standard file with detached PDS label.
            |     |
            |     |- AAA#####.FIT  The FITS standard file.
            |
            |- [CATALOG]           A directory containing documentation
            |     |                about the archive for the PDS catalog.
            |     |
            |     |- CATINFO.TXT   Description of files in this directory.
            |     |
            |     |- DATASET.CAT   A description of the data set.
            |     |
            |     |- INST.CAT      Description of the AGILE instrument.
            |     |
            |     |- INSTHOST.CAT  Description of the APO 3.5-meter telescope.
            |     |
            |     |- MISSION.CAT   Description of the LCROSS mission.
            |     |
            |     |- PERSON.CAT    Contact information for the people involved
            |     |                in the production of this data set.
            |     |
            |     |- REF.CAT       A list of pertinent references.
            |
            |- [INDEX]             A directory containing an index of data
            |     |                files on this volume
            |     |
            |     |- INDXINFO.TXT  Description of files in this directory.
            |     |
            |     |- BIAS_INDEX.TAB Index of bias calibration files.
            |     |
            |     |- BIAS_INDEX.LBL The PDS label describing BIAS_INDEX.TAB.
            |     |
            |     |- DARK_INDEX.TAB Index of dark calibration files.
            |     |
            |     |- DARK_INDEX.LBL The PDS label describing DARK_INDEX.TAB.
            |     |
            |     |- FLAT_INDEX.TAB Index of flat calibration files.
            |     |
            |     |- FLAT_INDEX.LBL The PDS label describing FLAT_INDEX.TAB.
            |     |
            |     |- INDEX.TAB      Index of data files on this volume.
            |     |
            |     |- INDEX.LBL      The PDS label describing IMP_INDEX.TAB.
            |     |
            |     |- STDS_INDEX.TAB Index of standards calibration files.
            |     |
            |     |- STDS_INDEX.LBL The PDS label describing STDS_INDEX.TAB.
            |
            |
            |- [DATA]              A directory containing the data files
                |                  and PDS labels describing the contents
                |                  of those files.
                |
                - [IMPnnnXX]       Directory of data files with names 
                   |               beginning with IMPnnn, where
                   |               "nnn" is 068 through 122.
                   |
                   |- IMPnnnkk.FIT  FITS data files with names
                   |                from IMPnnn01 through IMPnnn99.
                   |                
                   |- IMPnnnkk.LBL  Detached PDS labels describing
                                    the data files.

Whom to Contact for Information
===============================

   Dr. Nancy J. Chanover
   New Mexico State University
   Department Of Astronomy
   P.O. Box 30001/MSC 4500
   Las Cruces, NM 88003-8001
   nchanover@nmsu.edu
   
Cognizant Persons
=================

   This volume was designed and produced by Susan Slavney, PDS Geosciences
   Node, Washington University, St. Louis, MO, 63130.
   
  Questions and comments regarding this archive may be sent to the PDS
  Geosciences Node:

          PDS Geosciences Node
          Washington University
          Dept. of Earth and Planetary Sciences
          1 Brookings Drive
          St. Louis, MO 63130
          314-935-5493

          Web:   http://pds-geosciences.wustl.edu
          Email: geosci@wunder.wustl.edu