NSSDCA ID: PSSB-02622
Availability: Archived at NSSDC, accessible from elsewhere
This description was generated automatically using input from the Planetary Data System.
====================================================================== Data Set history: ====================================================================== This data set is version V1.1. The changes from the V0.0 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 ====================================================================== 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 27th Nov 2006 to 24th Feb 2007. The data have been observed and measured during the lead up to the Swingby of Mars. The closest approach was on 25 February 2007. 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: <mission>_<CAMx>_<begin time of obs>.<EXT> 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: <mission>_<CAMx>_<begin time of obs>.<EXT> 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: <mission>_<CAMx>_<begin time of obs>F.<EXT> 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). ======================================================================
These data are available on-line from the Planetary Data System (PDS) at:
https://pdssbn.astro.umd.edu/holdings/ro-m_cal-navcam-2-mars-v1.1/
Questions and comments about this data collection can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Bernhard Geiger | General Contact | European Space Agency | Bernhard.Geiger@esa.int |