PDS_VERSION_ID = PDS3 LABEL_REVISION_NOTE = "2015-09-22, 2017-08-23, MB V1.1." RECORD_TYPE = STREAM OBJECT = DATA_SET DATA_SET_ID = "RO-C-NAVCAM-2-ESC1-MTP013-V1.1" 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 1 MTP013 V1.1" DETAILED_CATALOG_FLAG = "N" DATA_OBJECT_TYPE = IMAGE START_TIME = 2015-02-10T23:25:00 STOP_TIME = 2015-03-10T23:25:00 DATA_SET_RELEASE_DATE = 2015-09-30 PRODUCER_FULL_NAME = "BERNHARD GEIGER" ABSTRACT_DESC = "This dataset contains ROSETTA NAVCAM RAW DATA of the Escort Phase from 10th Feb 2015 to 10th Mar 2015 when at the vicinity of target 67P/CG. This data set V1.1 supersedes the V1.0. It includes updates of the Browse images, adding of the FITS version, clarification of calibration target, document updates and resolve other minor outstanding errata." DATA_SET_DESC = " ====================================================================== Data Set history: ====================================================================== This data set is version V1.1. The changes from the V1.0 are listed below: - Full size BROWSE images - FITS versions added in EXTRAS directory - label content consistent with comet phase datasets - target names and types revised, mainly for 'CALIBRATION' of V1.0 - ERRATA of V1.0 addressed and removed (image orientation and geometry keywords). - updated EAICD version - GEO_NAVCAM*_INDEX and NAVCAM*_INDEX added into the INDEX directory. ====================================================================== 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 10th Feb 2015 to 10th Mar 2015. The frequency of the navigation slots was of one 2x2 raster every five hours, with interruption by manoeuvres. This gave 517 navigation images. In addition, 257 context images have been taken. This makes a total of 774 images. Three images of one raster (2015-02-21T04:15:00) were lost at downlink due to bad weather. In addition, there are 6 navigation images with lost rows. The list can be found in the DOCUMENT directory. Five context image has been taken with lost rows (due to bad weather). The orbiter was executing a far fly-by arc in the terminator plane at distances between 50km and 100km. This fly-by was followed by a close fly-by at 8km from the comet center at zero degree phase angle. Then, the outbound trajectory was captured at a distance of 255km in the terminator plane. The orbiter approached the comet in a descending arc up to 75km with a 50 degree phase angle. This was followed by a far fly-by arc with a minimum distance of 55km through zero degree phase angle. Finally, the orbiter executed far fly by arcs at distances between 70km and 110km with phase angles between 40 and 65 degrees. 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 in the EXTRAS directory. ====================================================================== Filename Convention: ====================================================================== In DATA: The filenaming convention for all data levels is given by: __. ROS CAM1 YYYYMMDDThhmmss IMG CAM2 LBL Examples: ROS_CAM1_20140223T081016.IMG ROS_CAM1_20140223T081016.LBL ROS_CAM2_20140223T094017.IMG ROS_CAM2_20140223T094017.LBL In BROWSE: The filenaming convention for all data levels is given by: __. ROS CAM1 YYYYMMDDThhmmss JPG CAM2 LBL Examples: ROS_CAM1_20140223T081016.LBL ROS_CAM1_20140223T081016.JPG ROS_CAM2_20140223T094017F.LBL ROS_CAM2_20140223T094017.JPG In EXTRAS: The filenaming convention for all data levels is given by: __F. ROS CAM1 YYYYMMDDThhmmss FIT CAM2 LBL Examples: ROS_CAM1_20140223T081016F.FIT ROS_CAM1_20140223T081016F.LBL ROS_CAM2_20140223T094017F.FIT ROS_CAM2_20140223T094017F.LBL ====================================================================== 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." ARCHIVE_STATUS = "LOCALLY ARCHIVED" CITATION_DESC = "Geiger, B. and M. Barthelemy, ROSETTA ORBITER NAVCAM ESC1-MTP013 V1.1, RO-C-NAVCAM-2-ESC1-MTP013-V1.1, ESA Planetary Science Archive and NASA Planetary Data System, 2017." DATA_SET_COLLECTION_MEMBER_FLG = "N" DATA_SET_TERSE_DESC = "This dataset contains ROSETTA NAVCAM RAW DATA of the Escort Phase. Included are ESC1-MTP013 data from 10 Feb 2015 to 10 Mar 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