Galileo Photopolarimeter Radiometer Pre-Jupiter Raw Readme ============================================================================= Brief Bundle Description ============================================================================= This Bundle includes raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Galileo Pre-Jupiter observations between December 1989 and August 1993. Most data are stored in ASCII tables although some binary data may also be included. All files give time values in Spacecraft Event Time (SCET). Some files may give an additional time column that contains the Earth Received Time (ERT) in addition to the SCET. 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. This bundle is organized into 11 collections, including: Galileo PPR Pre-Jupiter Raw Initial Checkout Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-checkout) Galileo PPR Pre-Jupiter Raw Earth1 Encounter Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-earth1) Galileo PPR Pre-Jupiter Raw Earth2 Encounter Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-earth2) Galileo PPR Pre-Jupiter Raw Calibration Earth1 Encounter Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-earth1-cal) Galileo PPR Pre-Jupiter Raw Calibration Earth2 Encounter Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-earth2-cal) Galileo PPR Pre-Jupiter Raw Asteroid Gaspra Encounter Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-gaspra) Galileo PPR Pre-Jupiter Raw Asteroid Ida Encounter Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-ida) Galileo PPR Pre-Jupiter Raw Moon1 Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-moon1) Galileo PPR Pre-Jupiter Raw Moon2 Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-moon2) Galileo PPR Pre-Jupiter Raw Venus Encounter Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-venus) Galileo PPR Pre-Jupiter Raw Calibration Venus Encounter Data Collection (urn:nasa:pds:galileo-ppr-prejup-raw:data-venus-cal) PDS4 documentation is all XML. There is an XML label for every product in the archive. Galileo PPR Pre-Jupiter Raw Initial Checkout Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the initial turn-on and checkout of the PPR in December 1989. Galileo PPR Pre-Jupiter Raw Earth1 Encounter Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Earth-1 encounter observations in November-December 1990. Galileo PPR Pre-Jupiter Raw Earth2 Encounter Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Earth-2 encounter observations in November-December 1992. Galileo PPR Pre-Jupiter Raw Calibration Earth1 Encounter Data Collection ============================================================================ This collection contains the raw calibration data for the Galileo Orbiter PPR instrument for the period corresponding to the Earth-1 encounter observations in November-December 1992. Galileo PPR Pre-Jupiter Raw Calibration Earth2 Encounter Data Collection ============================================================================ This collection contains the raw calibration data for the Galileo Orbiter PPR instrument for the period corresponding to the Earth-2 encounter observations in November-December 1992. Galileo PPR Pre-Jupiter Raw Asteroid Gaspra Encounter Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Gaspra asteroid encounter observations in October 1991. Galileo PPR Pre-Jupiter Raw Asteroid Ida Encounter Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Ida asteroid encounter observations in August 1993. Galileo PPR Pre-Jupiter Raw Moon1 Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Earth-1 encounter observations in November-December 1992. Galileo PPR Pre-Jupiter Raw Moon2 Encounter Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Earth-2 encounter observations in November-December 1992. Galileo PPR Pre-Jupiter Raw Venus Encounter Data Collection ============================================================================ This collection contains the raw data for the Galileo Orbiter PPR instrument for the period corresponding to the Venus encounter observations in February 1990. Galileo PPR Pre-Jupiter Raw Calibration Venus Encounter Data Collection ============================================================================ This collection contains the raw calibration data for the Galileo Orbiter PPR instrument for the period corresponding to the Venus encounter observations in February 1990. These data were originally archived in the following PDS3 data sets: GO-X-PPR-2-EDR-CHECKOUT-V1.0 (https://doi.org/10.17189/1519706), GO-E/L/CAL-PPR-2-EDR-EARTH1-V1.0 (https://doi.org/10.17189/1519652), GO-CAL-PPR-2-EDR-EARTH1-CALIBRATION-V1.0 (https://doi.org/10.17189/1519634), GO-E/L/CAL-PPR-2-EDR-EARTH2-V1.0 (https://doi.org/10.17189/1519653), GO-CAL-PPR-2-EDR-EARTH2-CALIBRATION (https://doi.org/10.17189/1519635) GO-A-PPR-2-EDR-GASPRA-V1.0 (https://doi.org/10.17189/1519628), GO-A-PPR-2-EDR-IDA-V1.0 (https://doi.org/10.17189/1519629), GO-L-PPR-2-EDR-MOON1-V1.0 (https://doi.org/10.17189/1519689) GO-L-PPR-2-EDR-MOON2-V1.0 (https://doi.org/10.17189/1519690) GO-V-PPR-2-EDR-VENUS-V1.0 (https://doi.org/10.17189/1519702) GO-CAL-PPR-2-EDR-VENUS-CALIBRATION (https://doi.org/10.17189/1519636) ============================================================================ Mission Facts ============================================================================ The Galileo spacecraft and some science instruments were reprogrammed after arrival at Jupiter so that data acquisition and downlink could be achieved at the low bit rates associated with the mission after the high gain antenna (HGA) anomaly. New software was telemetered to the spacecraft in early May 1996 in a period known as the 'Inflight Load' or IFL. The mission prior to the IFL is known as the Phase 1 mission. After the IFL the mission is referred to as the Phase 2 mission. In Phase 1 raw data were provided to the instrument teams in Experiment Data Record raw (EDR) format. In Phase 2, the whole telemetry stream and ground data system were changed. The raw data were 'packetized' and delivered electronically as packet files or instrument packet files (IPF). The difference between a packet file and an IPF is a single 44 byte header called an SFDU. The Io data stored on this Bundle were acquired during Phase 1 and downlinked after the IFL by use of the new capabilities of the Phase 2 flight software. As such, they are a hybrid form of data that were acquired by using flight software that may differ from other files of the same raw data format. This is primarily of concern when instrument reprogramming has resulted in a change in the contents of the raw data (i.e. MAG). The Galileo orbits were named by concatenating the first letter of the name of the primary target in each orbit with the orbit number. Thus, the fourth Jupiter orbit, in which Europa is the primary target, is called E4. The project defined orbits according to spacecraft command load boundaries rather than the normal convention of apoapsis to apoapsis. The navigation team did not always adhere to this convention, causing some confusion. The PDS has organized the data and data delivery schedules around the project defined orbit boundaries. The following tables contain information about the orbital tour and satellite encounters: Mission Phase Name Start Date End Date Targets(s) Launch 1989-10-17T00:00 1989-10-26T16:00 N/A Interplanetary Cruise 1989-10-26T16:00 1995-10-09T00:00 Solar Wind Earth-Venus Cruise 1989-10-26T16:00 1990-02-19T00:00 Solar Wind 4-Day Checkout 1989-12-27T00:00 1989-12-31T00:00 Solar Wind Venus Encounter 1990-02-07T00:00 1990-02-19T00:00 Venus Venus-Earth Cruise 1990-02-19T00:00 1991-04-29T00:00 Solar Wind Earth1 Encounter 1990-11-08T00:00 1990-12-16T00:00 Earth Earth-Earth Cruise 1991-04-29T00:00 1993-04-12T00:00 Solar Wind Gaspra Encounter 1991-10-29T22:36 1991-10-29T22:36 Gaspra Earth2 Encounter 1992-11-08T00:00 1992-12-20T00:00 Earth Earth-Jupiter Cruise 1993-04-12T00:00 1995-10-09T00:00 Solar Wind Ida Encounter 1993-08-28T16:52 1993-08-28T16:52 Ida Shoemaker-Levy 9 Encounter 1994-07-16T00:00 1994-07-22T00:00 Solar Wind Errata ====== An errata file has been included. If more issues are discovered, they will be noted in this file. Every effort has been made to insure that the data are of the best quality available. However, users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data and report any issues to PDS/PPI. ============================================================================ Contacts ============================================================================ For questions or problems regarding this archive, please contact the PDS/PPI PDS operator: Email pds_operator@igpp.ucla.edu