PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM LABEL_REVISION_NOTE = "2021-08-20, Initial release; " OBJECT = TEXT PUBLICATION_DATE = 2021-08-20 NOTE = "The New Horizons Alice Ultraviolet Imaging Spectrograph derived data product giving maps of the count rate of Lyman-alpha emission from neutral hydrogen in the interplanetary medium. " END_OBJECT = TEXT END Table of Contents ================= Introduction Science Data Content Processing Information Volume Format File Formats Volume Contents Whom to Contact for Information Introduction ============ The New Horizons Atmospheres Team generated the derived data products in this dataset of the count rate of Lyman-alpha emission from neutral hydrogen in the interplanetary medium as taken by the Alice Ultraviolet Imaging Spectrograph. Count rate is measured across the full bandpass of the instrument, but the sky background UV brightness is highly dominated by Lyman-alpha, so it is assumed that all counts (above a 120 counts/s instrumental background) are due to Lyman-alpha. Science data content ==================== This document is a volume structure overview of the New Horizons (NH) Alice Interplanetary Medium derived data products. Guidance is provided in this document for the following dataset: NH-X-ALICE-5-IPM-V1.0 Processing Information ====================== All NH Raw and Calibrated datasets were generated in similar fashion by an automated pipeline, but the higher level datasets were created by a customized process. However, all of the information that follows should be common to all high level NH datasets, with pointers to locations where more information can be found. Refer to the data set catalog (CATALOG/DATASET.CAT) and documentation (DOCUMENT/), for non-standard information specific to each dataset. For more general mission documentation, please see the mission documentation dataset delivered to the PDS along with this release. Volume Format ============= This volume has been formatted according to the PDS Standards Reference 3.8 version. 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 most current operating systems. Data are provided in PDS labels and in csv format. Volume Contents =============== Files on this volume are organized into a set of sub-directories 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. See the *INFO.TXT files in each top-level sub-directory for specific information about the files under that directory. In this table, directory names are surrounded by forward slashes (/), and the top-level of the volume is indicated by a single forward slash. / Top level of volume | +-- AAREADME.TXT The AAREADME file; | +--/CATALOG/ Directory containing PDS catalog objects. | | | |-- CATINFO.TXT Description of files in the CATALOG directory. | |-- DATASET.CAT Description of this data set | |-- ALICE.CAT Description of the Alice instrument | |-- NH.CAT Description of the New Horizons mission | |-- NH_KEM.CAT Description of the New Horizons extended mission | |-- NHSC.CAT Description of the New Horizons spacecraft | +-- REF.CAT List of publications relevant to this data set | +--/DATA/ Top-level data directory | | | +-- *.CSV Data files in this directory | +-- *.LBL PDS labels for the data files in this directory +--/DOCUMENT/ Directory containing dataset-related documents. | | | +-- DOCINFO.TXT Description of files in the DOCUMENT directory. | +-- *.* Documentation files | +--/INDEX/ Directory containing index files. | | | |-- INDXINFO.TXT Description of files in the INDEX directory | |-- INDEX.TAB Index of data files on this volume | |-- INDEX.LBL PDS label for INDEX.TAB file | |-- CHECKSUM.TAB MD5 Checksum file for files on this volume | +-- CHECKSUM.LBL PDS label for CHECKSUM.TAB | +-- VOLDESC.CAT Description of the logical contents of this volume. Whom to Contact for Information =============================== New Horizons ALICE Principal Investigator: S. Alan Stern Southwest Research Institute (SwRI) Department of Space Operations 1050 Walnut Street, Suite 400 Boulder, CO 80302 USA New Horizons Science Operations Center (SOC): Jillian Redfern Southwest Research Institute (SwRI) Department of Space Operations 1050 Walnut Street, Suite 400 Boulder, CO 80302 USA