PDS_VERSION_ID = PDS3 LABEL_REVISION_NOTE = "2016-02-17" RECORD_TYPE = STREAM OBJECT = DATA_SET DATA_SET_ID = "RO-C-NAVCAM-2-ESC4-MTP023-V1.0" OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "N/A" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_INFORMATION DATA_SET_NAME = " ROSETTA-ORBITER 67P NAVCAM 2 COMET ESCORT 4 MTP023 V1.0" DETAILED_CATALOG_FLAG = "N" DATA_OBJECT_TYPE = {IMAGE,HEADER} START_TIME = 2015-11-17T23:25:00 STOP_TIME = 2015-12-15T23:25:00 DATA_SET_RELEASE_DATE = 2016-02-29 PRODUCER_FULL_NAME = "BERNHARD GEIGER" ARCHIVE_STATUS = "IN LIEN RESOLUTION" ABSTRACT_DESC = "This dataset contains ROSETTA NAVCAM RAW DATA of the Escort Phase 4 from 17th Nov 2015 to 15th Dec 2015 when at the vicinity of target 67P/CG." DATA_SET_DESC = " ====================================================================== Data Set Overview: ====================================================================== The data from the Rosetta Navigation Camera (NavCam) was extracted by Bernhard Geiger; the data set was constructed and submitted by Maud Barthelemy on behalf of the Planetary Science Archives (PSA). The data have been observed and measured from 17th Nov 2015 to 15th Dec 2015. The frequency of the navigation slots was of one image every five hours, with interruption by manoeuvres. 128 images were taken, four slots were skipped. In addition, 269 context images were taken, which makes a total of 397 images. There is no lost or incomplete navigation images. There is no lost context images but one context image has been taken with lost rows due to SSMM slow downlink anomaly. One context image were taken with wrong time stamp due to an anomaly but this has been manually corrected from 2015-11-23T15:25:05 to 2015-11-24T09:37:21. The orbiter was flying fly-by arcs with distances ranging from 150km to 100km. In terms of phase angles, transition to terminator was executed. All images in this data set are raw and uncalibrated data taken using the imaging mode. The data set contains images resolved using both NavCams onboard the Rosetta S/C and the DATA directory is organised to reflect this with two sub directories: - CAM1 - CAM2 CAM2 directory is only present if CAM2 observations are done. After hibernation exit CAM2 was only switched on to confirm its health status in a check-out. During the comet escort phase CAM2 will only be used in the case of a failure of the nominal camera CAM1. For each image, the user can also find the FITS format of the observation. ====================================================================== Filename Convention: ====================================================================== The filenaming convention for all data levels is given by: __. ROS CAM1 YYYYMMDDThhmmss IMG CAM2 LBL (JPG) Examples: ROS_CAM1_20140223T081016.IMG ROS_CAM1_20140223T081016.LBL ROS_CAM1_20140223T081016F.FIT ROS_CAM1_20140223T081016F.LBL (ROS_CAM1_20140223T081016.JPG) ROS_CAM2_20140223T094017.IMG ROS_CAM2_20140223T094017.LBL ROS_CAM2_20140223T094017F.FIT ROS_CAM2_20140223T094017F.LBL (ROS_CAM2_20140223T094017.JPG) (In the case of the BROWSE directory) ====================================================================== Geometry Information - Coordinate System: ====================================================================== The label files include the following geometric variables: - SC SUN POSITION VECTOR: The vector from the spacecraft to the Sun in equatorial J2000 inertial frame. - SC TARGET POSITION VECTOR: The vector from the spacecraft to the centre of the comet nucleus in equatorial J2000 inertial frame. - SC TARGET VELOCITY VECTOR: The spacecraft to comet nucleus velocity vector in in equatorial J2000 inertial frame. - TARGET CENTER DISTANCE: The distance between the spacecraft and the comet nucleus centre. (Note that also for checkout and stellar calibration images the comet nucleus distance is given here.) - SUB SPACECRAFT LATITUDE and SUB SPACECRAFT LONGITUDE: The latitude and longitude of the sub-spacecraft point derived from the Flight Dynamics body-fixed reference frame implicitly specified by the information provided in the comet attitude file CATT. - RIGHT ASCENSION and DECLINATION: Right Ascension and Declination of the camera boresight direction in equatorial J2000 inertial frame. - CELESTIAL NORTH CLOCK ANGLE: The direction of celestial north at the center of the image - measured from the upward direction, clockwise to the direction toward celestial north. - SOLAR ELONGATION: The angle between the line of sight of observation and the direction of the Sun. All geometric values are calculated for the time t = IMAGE TIME (and not START TIME). ====================================================================== " CONFIDENCE_LEVEL_NOTE = "All data have been validated by ESA and found as expected. Any exceptions are noted by the DATA_QUALITY field in the label files." CITATION_DESC = "Geiger, B. and M. Barthelemy, ROSETTA ORBITER NAVCAM ESC4-MTP023, RO-C-NAVCAM-2-ESC4-MTP023-V1.0, ESA Planetary Science Archive and NASA Planetary Data System, 2016." DATA_SET_COLLECTION_MEMBER_FLG = "N" DATA_SET_TERSE_DESC = "This dataset contains ROSETTA NAVCAM RAW DATA of the Escort Phase. Included are ESC4-MTP022 data from 17 Nov 2015 to 15 Dec 2015." END_OBJECT = DATA_SET_INFORMATION OBJECT = DATA_SET_TARGET TARGET_NAME = "67P/CHURYUMOV-GERASIMENKO 1 (1969 R1)" END_OBJECT = DATA_SET_TARGET OBJECT = DATA_SET_MISSION MISSION_NAME = "INTERNATIONAL ROSETTA MISSION" END_OBJECT = DATA_SET_MISSION OBJECT = DATA_SET_HOST INSTRUMENT_HOST_ID = RO INSTRUMENT_ID = NAVCAM END_OBJECT = DATA_SET_HOST END_OBJECT = DATA_SET END