PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM ^TEXT = "AAREADME.TXT" OBJECT = TEXT PUBLICATION_DATE = 2017-04-06 NOTE = "AAREADME.TXT describes this volume." END_OBJECT = TEXT END Volume DWNMFC2_1B Dawn Framing Camera 2 Calibrated Level-1B Cruise Archive ============================================================================== Brief Disk Description ============================================================================== This volume contains images from the Dawn Framing Camera 2 calibrated level-1B (RDR) Mars flyby dataset. This dataset includes the Reduced Data Record (RDR) version of all available images acquired during the Mars Gravity Assist. Note however that due to a spacecraft safing, all but 6 lit images (with a few additional dark images) of the planned FC Mars observations were lost. The images in this dataset have been radiometrically calibrated by means of fully reversible procedures, transforming the value of the pixels from digital units to applicable engineering units without modification of the geometry. All images are stored in the 'DATA' branch of the directory tree. In addition to the imagery, anciliary information is stored within the image headers. Calibration files needed for further processing are archived as part of the DAWN-CAL-FC2-2-EDR-CALIB-IMAGES-V1.0 data set. More information describing the image and volume format is contained in the Software Interface Specification (SIS). A copy of the SIS is provided in the /DOCUMENT/SIS directory of this volume. Users of these data are encouraged to acknowledge both the PDS and the principal investigators of the instruments whose data is used in analysis in all publications. ============================================================================== Volume Set Information ============================================================================== This volume is part of the Framing Camera 2 calibrated level-1B RDR images volume set. This volume set includes the following volumes: Volume ID Description ------------------------------------------------------- DWNXFC2_1B Dawn FC2 L1-B RDR cruise images DWNMFC2_1B Dawn FC2 L1-B RDR Mars flyby images DWNVFC2_1B Dawn FC2 L1-B RDR Vesta images DWNCAFC2_1B Dawn FC2 L1-B RDR Ceres Approach/RC3 images DWNCSFC2_1B Dawn FC2 L1-B RDR Ceres Transfer/Survey images DWNCHFC2_1B Dawn FC2 L1-B RDR Ceres HAMO images DWNCLFC2_1B Dawn FC2 L1-B RDR Ceres LAMO images DWNC1FC2_1B Dawn FC2 L1-B RDR Ceres Extended Mission Orbit 1 images DWNC2FC2_1B Dawn FC2 L1-B RDR Ceres Extended Mission Orbit 2 images DWNC3FC2_1B Dawn FC2 L1-B RDR Ceres Extended Mission Orbit 3 images DWNC4FC2_1B Dawn FC2 L1-B RDR Ceres Extended Mission Orbit 4 images ============================================================================== Mission Facts ============================================================================== The 'Dawn Science Observations' table below provides a list of scientific observations made by the Dawn instruments. It includes the observation start date, the ID of the phase in which it occurred, the activity name, and a brief description. Footnotes describing the availability or organization of specific data from specific observations are located at the end of this table and are indicated in the Activity Description by numbers in square brackets. ------------------------------------------------------------------------------ Dawn Science Observations ------------------------------------------------------------------------------ Start Mission Activity Activity Date Phase Name Description ============================================================================== 09-02-17 MGA MCA Mars flyby images ------------------------------------------------------------------------------ 09-02-17 MGA MCA 40 of 979 planned images acquired [1] [1] Due a spacecraft safing at Mars, all of the VIR observations, and all but a few of the FC2 images were lost. ------------------------------------------------------------------------------ ============================================================================== File Formats ============================================================================== The image files on this volume are binary images, with an attached ASCII header (PDS label). The PDS label contains information describing spacecraft, target, and imaging parameters characterizing the attached image. A data set description, instrument description, and other PDS documents are in .CAT files in the /CATALOG directory. In more recent versions of the Microsoft Windows operating system the .CAT by default is reserved as 'Security Catalog.' The .CAT files contained in this volume are ASCII text files, and can be read by any form of text editor. To make Windows open files with this name extension as text files, do the following. In Windows Explorer, open the 'Tools' menu and select 'Folder Options'. Select the 'File Types' tab and select 'CAT' from the list. Press 'Change...' and then choose your prefered text editor or viewer. We do not know of any harmful effects this might have on the operating system or other programs, but do not guarantee it will be entirely safe to make this change. If problems occur, the change can be undone in the same 'File Types' window by changing the default application back to 'crypto shell extension'. Additional documentation is generally located in the DOCUMENT directory. ============================================================================== Errata ============================================================================== Every effort has been made to assure that the data and documentation are of the best possible quality. However, mistakes are inevitable. There is a file called ERRATA.TXT found at the root level of this volume which contains a list of known deficiencies or caveats associated with data on this volume at the time this volume was produced. ============================================================================== Volume Contents and Structure ============================================================================== This section describes the volume structure and naming conventions. Below is a tree diagram of the volume, followed by a description of the directory function and key files in each directory. DWNMFC2_1B (root directory) | |- AAREADME.TXT Describes volume contents, and organization (this file) | |- ERRATA.TXT Describes known deficiencies or caveats in the data or | on this volume. | |- VOLDESC.CAT High level description of volume contents. | | |- [CATALOG] PDS catalog files containing information describing the | data, instrument, instrument personnel, relevant references, | the spacecraft, and mission. | |- [BROWSE] JPG thumbnail versions of the images provided in DATA area. | |- [DATA] Contains the images in both PDS IMG, and FITS format. The | images are divided up into separate subdirectories by | observation activity, and date. | |- [DOCUMENT] Contains documents describing the instrument, and use of the | images | |- [EXTRAS] Contains products which are not part of the official | archive, and which may not conform to PDS standards, but | which may be of use to data users. | |- [INDEX] Contains a table of contents for all files located on this volume, and the volume set to date. ============================================================================ Contacts ============================================================================ This volume was produced for the Planetary Data System (PDS) at the Small Bodies node. The images, and associated metadata were supplied by Dr. Pablo Gutierrez-Marques, and Thorsten Maue at the Max-Planck Institute for Solar System Research (MPS). The volume was assembled at the Dawn Science Center (DSC), by Joseph N. Mafi. For questions or problems regarding the volume, please contact Dr. Mark Sykes at the PDS Small Bodies Node: Internet sykes@psi.edu Telephone 520-322-8925 3 Mail Planetary Science Institute c/o Mark Sykes 1700 E. Ft. Lowell, Ste. 106 Tuscon, AZ 85719-2395 USA For question regarding the data, please contact Dr. Pablo Gutierrez-Marques at MPS: Internet gutierrez@mps.mpg.de Telephone +49 (0) 5556 979 313 Mail Max Planck Institute for Solar System Research Max-Planck-Str. 2 37191 Katlenburg-Lindau GERMANY For questions regarding PDS Standards or other archives available from the PDS, please contact PDS Operator at the PDS Engineering Node (at JPL): Internet pds_operator@jpl.nasa.gov Telephone 818-354-4321 Mail Planetary Data System, PDS Operator Jet Propulsion Laboratory Mail Stop 202-101 4800 Oak Grove Dr. Pasadena, CA 91109-8099 USA The PDS assumes no legal liability for errors on this disk. All users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data. Please report errors on this disk to the Small Bodies Node of the PDS through the ERRATA reporting procedures described above.