PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM SPACECRAFT_NAME = "CLEMENTINE 1" TARGET_NAME = "MOON" OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 1997-07-01 NOTE = "CLEMENTINE BASEMAP MOSAIC" END_OBJECT = TEXT END CLEMENTINE BASEMAP MOSAIC Table of Contents 1. - INTRODUCTION 2. - DISK FORMAT 3. - FILE FORMATS 4. - CD CONTENTS, DIRECTORY, AND FILENAMING CONVENTIONS 5. - CONTACTS FOR MORE INFORMATION 1. INTRODUCTION This CD is part of a 15 volume set that contains the "Clementine Basemap Mosaic" of Earth's Moon. The lunar basemap is a radiometrically and geometrically controlled, photometrically modeled global image mosaic compiled using more than 43,000 images from the 750 nanometer filter observations of the Ultraviolet / Visible camera onboard the Clementine Spacecraft. The basemap mosaic is mapped in the Sinusoidal Equal-Area projection at a resolution of 100 meters per pixel requiring approximately 10 gigabytes of digital storage. The basemap is partitioned into 14 geographic zones with each zone contained on a CD volume. Twelve zones, each 30 degrees wide in longitude and ranging from 70 degrees south to 70 degrees north, make up the mid-latitude regions (CD volumes 2-13). The two polar zones cover 360 degrees of longitude from 70 degrees latitude to the pole (CD volumes 1 and 14). A 15-th volume contains reduced-resolution planetwide coverage at .5, 2.5, and 12.5 km/pixels. Backplane data files for emission, incidence, and phase angle values are also present on volume 15. The geographic zones are further divided into "tiles". Each tile covers ~7 degrees of latitude with longitude coverage of ~6 degrees at the equatorial regions to larger longitude coverage at higher latitudes (longitude convergence at the poles allows more longitude coverage of each tile at the higher latitudes). Tiles are stored as image files of approximately 2100 pixels on a side. Pixels are 16- bit signed integers. The table shown below summarizes the contents of each CD volume. CD Volume Latitude Longitude ------- ----------- ------- cl_3001 70(N)-90(N) 000-360 cl_3002 70(S)-70(N) 000-030 cl_3003 70(S)-70(N) 030-060 cl_3004 70(S)-70(N) 060-090 cl_3005 70(S)-70(N) 090-120 cl_3006 70(S)-70(N) 120-150 cl_3007 70(S)-70(N) 150-180 cl_3008 70(S)-70(N) 180-210 cl_3009 70(S)-70(N) 210-240 cl_3010 70(S)-70(N) 240-270 cl_3011 70(S)-70(N) 270-300 cl_3012 70(S)-70(N) 300-330 cl_3013 70(S)-70(N) 330-360 cl_3014 70(S)-90(S) 000-360 cl_3015 (reduced resolution global coverage) A detailed description of the Clementine Basemap Mosaic with information about the organization and compilation of the database is provided in the VOLINFO files located in the directory. The Clementine Basemap Mosaic was compiled for the National Aeronautics and Space Administration (NASA) by the United States Geological Survey (USGS) under the direction of Dr. Alfred S. McEwen, principal Investigator (now with the University of Arizona). Tammy Becker, Ella Lee, Kay Edwards (retired), and Dr. Mark Robinson (now with Northwestern University) comprised the USGS technical group responsible for its compilation. The Lunar Geometric Control network was derived by Mert Davies and Tim Colvin (both from the RAND Corporation). The design, layout, and production of the CDs were performed by Chris Isbell and Eric Eliason. Thanks to Kris Becker for the development of software tools for producing PDS compatible data sets. The image files are organized according to NASA's PDS standards. An image file (tile) is organized as a PDS labeled file containing an "image object". Additionally, each image file is associated with an ISIS "qube object" detached label so that images can be accessed and processed with the ISIS system (available through the USGS, Flagstaff, AZ.). Several access tools are available that support the Clementine Basemap Mosaic. The program "NASAView" provides a simple display capability for images stored in the PDS format. This tool will be available through distribution by the PDS Central Node (Jet Propulsion Laboratory, Pasadena, CA) in 1997. Additionally, a software tool called "MapMaker" enables users to extract seamless mosaics of images for any latitude-longitude region and at a variety of scales in different map projections. MapMaker, available for distribution in 1997 through the PDS Imaging Node, can output images in a variety of formats common to the user community (gif, jpeg, tiff, PDS) 2. DISK FORMAT The disk has been formatted so that a variety of computer systems (e.g. IBM/PC compatible, Macintosh, Sun) may access the data. Specifically, it is formatted according to the ISO 9660 level 1 Interchange Standard. For further information, refer to the ISO 9660 Standard Document: Reference Number ISO 9660-1988, 15 April 1988. The extended attribute records (XAR) supported by the ISO are not used in this volume series. The lack of XARs on a file only affects the VAX/VMS user community. It will be necessary for VAX/VMS users to use the VMS CONVERT utility to convert document and text files before they can be satisfactorily accessed. VAX/VMS users can contact the PDS Imaging Node for support of the Clementine Base Map Volume set. 3. FILE FORMATS All document files, detached label files, and tables are stored as ASCII stream-record files. In a stream-record file, records (lines of text) are separated by a carriage-return and line-feed character sequence. The / sequence marks the end-of-record and the start of a new record. This organization works well for the Microsoft-DOS systems because the / sequence is identically used on these systems. On Macintosh systems, an end-of-record mark is simply a character. Macintosh text editors can read and access these files, but a special-character indicator (usually a "square box" character) will mark the "extraneous" character at the beginning of each line. On UNIX systems, an end-of-record mark is simply a character. UNIX text editors can read and access these files, but a special-character (usually a ^M sequence) indicator will mark the "extraneous" character at the end of each line. File names with extension "TAB", "LBL", "LAB", "TXT", and "CAT" are formatted as ASCII stream-record files. In addition to the standard ASCII text file format used for documentation files, some documentation files may additionally exist in other forms to facilitate easy access to these files. File names with extension "DOC" are formatted as Microsoft Word Version 6.0 documents. File names with extension "PDF" are formatted as Adobe Portable Document Format (PDF) files. Tabular files are formatted so that they may be read directly into many database management systems of various computers. All fields are separated by commas, and character fields are enclosed in double quotation marks ("). Character fields are left justified, and numeric fields are right justified. The "start byte" and "bytes" values listed in the labels that describe the tabular files do not include the commas between fields or the quotation marks surrounding character fields. The records are of fixed length, and the last two bytes of each record contain the ASCII / characters. This scheme allows a table to be treated as a fixed- length record file on computers that support this file type and as a normal text file on other computers. PDS labels are object-oriented. The object to which the label refers (IMAGE, TABLE, etc.) is denoted by a statement of the form: ^object = location in which the carat character (^) indicates that the object starts at the given location. In an embedded label, the Clementine Base Map image archive uses the form: ^object = n where "n" points to the starting byte location of the object. (The first byte in a file is designated as byte location 1.) For detached labels (labels existing in their own file) the object location is signified as: ^object = "file.nam" In this form, the object of the label description exists in the file named "file.nam". For a description of the PDS object label specifications, consult JPL document D-7669. 4. CD CONTENTS, DIRECTORY, AND FILENAMING CONVENTION The files on this CD are organized starting at the root or 'parent' directory. Below the parent directory is a directory tree containing data, documentation, and index files. In the table below directory names are indicated by brackets (<...>), upper-case letters indicate an actual directory or file name, and lower-case letters indicate the general form of a set of directory or file names. DIRECTORY/FILE CONTENTS ------------------- ------------------------------------------ | |-AAREADME.TXT The file you are reading (ASCII Text). | | |-INDEX.HTM Hypertext Markup Language(HTML) file for use | as a user interface to files on this CD. | |-ERRATA.TXT Description of known anomalies and errors | present on the volume set(optional file). | |-VOLDESC.CAT A description of the contents of this | CD volume in a format readable by | both humans and computers. | |- Catalog Directory | | | |-CATINFO.TXT Describes Contents of the Catalog directory | | | |-DATASET.CAT Clementine Basemap Mosaic description | | | |-DSMAP.CAT Map Projection description | | | |-INSTHOST.CAT Clementine Spacecraft description | | | |-MISSION.CAT Clementine Mission description | | | |-PERSON.CAT Contributors to Clementine Basemap | | | |-REFS.CAT References for Clementine Basemap | | | |-UVISCAT.CAT UVVIS Camera description | |- Documentation Directory. The files in this | | directory provide detailed information | | regarding the Clementine Basemap Mosaic. | | | |-DOCINFO.TXT Description of files in the DOCUMENT | | directory. | | | |-VOLINFO.TXT Documentation regarding the | | contents of this CD Volume Set. | | | |-VOLINFO.DOC Microsoft Word V6.0A version of VOLINFO.TXT | | | |-VOLINFO.PDF Adobe-Acrobat Portable Document Format (PDF) | | version of VOLINFO.TXT | | | |-VOLINFO.HTM HTML document for VOLINFO.TXT | | | |-VOLINFO.LBL PDS Label file describing the VOLINFO | | documents. | |- Directory for the image index files. | | | |-INDXINFO.TXT Description of files in directory. | | | |-IMGINDX.TAB Image Index table. | | | |-IMGINDX.LBL PDS label for IMGINDX.TAB. | | | |-SRCINDX.TAB Table of source images used in the | | production of the Clementine Basemap. | | | |-SRCINDX.LBL PDS Label for SRCINDX.LBL | | |- Data directory name where; | | | | (For this Basemap CD Volume Set) | | t = B (Clementine Basemap Mosaic) | | = E (Emission angle backplane) | | = I (Incidence angle backplane) | | = P (Phase angle backplane) | | | | (For future CD Volumes) | | = U (UVVIS Cube) | | = N (NIR Cube) | | = L (LWIR Image Data) | | = H (Hi-res Image Data) | | | | s = (Resolution - km/pixel) | | = A (.004 km/pixel - future mapping) | | = B-D (For future mapping as needed) | | = E (.02 km/pixel - future mapping) | | = F-H (For future mapping as needed) | | = I (.1 km/pixel) | | = J (.15 km/pixel) | | = K-L (For future mapping as needed) | | = M (.5 km/pixel) | | = N-P (For future mapping as needed) | | = Q (2.5 km/pixel) | | = R-T (For future mapping as needed) | | = U (12.5 km/pixel) | | = V-Z (For future mapping as needed) | | | | sl = Southernmost Latitude | | nl = Northernmost Latitude | | | | y = N (Positive latitude) | | = S (Negative latitude) | | = (Not used for full latitude | | coverage. i.e. -90 to 90) | | | | The following data directories exist on | | Volume 1 | | | | | | The following data directories exist on | | Volumes 2-13 | | | | | | The following data directories exist on | | Volume 14 | | | | | | The following data directories exist on | | Volume 15 | | | | | | | | | |- Data filenames where; | | t = (Same as Data directory description above) | s = (Same as Data directory description above) | pp = (00-90) Center latitude of Image File. | (Two digit truncated integer) | y = N (North Latitude) | S (South Latitude) | mmm = (000-360) Center longitude of Image. | (Three digit truncated integer) | xxx = IMG (PDS Labeled Image File) | = LAB (ISIS Detached Label File) | = JPG (JPEG "small", "medium", and "large" | Browse Images) Directory Tree only | = HTM ( Directory Tree only) | |- Data directory for polar region | | Orthographic products. | | | |- Data filenames as described above. | | |- Directory tree containing "Browse" (reduced | | resolution) JPEG images for each image data | | product on the CD. The directory structure | | below the directory is identical to | | the Data directory structure at the | | level with , , and | | directories added. | | | |-BROWINFO.TXT Description of content. | | | |-BRWSGRP.HTM Graphics (map)-based HTML interface to CD | | data (Accessed by INDEX.HTM file). | | | |-BRWSTXT.HTM Text (ASCII)-based HTML interface to CD | | data (Accessed by INDEX.HTM file). | | | |- | |- | |- Directory tree containing "small", "medium", and "large" sized JPEG images for each image product. These images are primarily used by the HTML documents on the CD. The directory structure below the , , and directories are identical to the data directory structure at the level. "small" images are ~60x60 pixels "medium" images are ~400x400 pixels "large" images are ~1000x1000 pixels 5. CONTACTS FOR MORE INFORMATION For details regarding generation of the Clementine Basemap Mosaic ------------------------------------------------------------------ Dr. Alfred McEwen Ella Lee or Tammy Becker Lunar and Planetary Laboratory U.S. Geological Survey University of Arizona Astrogeology Team Tucson, AZ 85721 2255 N. Gemini Dr. mcewen@pirl.lpl.arizona.edu Flagstaff, Arizona 86004 elee@flagmail.wr.usgs.gov tbecker@flagmail.wr.usgs.gov For overall content, design, and archive of the Clementine UVVIS 750-nm DIM as presented on this CD volume set: ---------------------------------------------------------- Chris Isbell or Eric Eliason U.S. Geological Survey Astrogeology Team 2255 N. Gemini Dr. Flagstaff, Arizona 86004 cisbell@flagmail.wr.usgs.gov eeliason@flagmail.wr.usgs.gov For information on how to obtain a copy of the Clementine Basemap ----------------------------------------------------------------- Planetary Data System Imaging Node Eric Eliason U.S. Geological Survey Astrogeology Team 2255 N. Gemini Dr. Flagstaff, Arizona 86004 eeliason@flagmail.wr.usgs.gov