NSSDCA ID: PSSB-02754
Availability: Archived at NSSDC, accessible from elsewhere
This description was generated automatically using input from the Planetary Data System.
====================================================================== 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 Rosetta wake up (21 Jan. 2014) to end of April. During this part of the prelanding phase, only check out and commissioning were happening. The following images have been taken: 2014-02-23 NAVCAM check-out 6 images (3 images with CAM2) 2014-03-27 HS link test in parallel with SR 4 images 2014-04-30 HS link test in parallel with SR/VR 4 images It makes a total of 14 images. No specific pointing has been used (default pointing of spacecraft). Distances are from 6826466km to 2380426km. 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 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: <mission>_<CAMx>_<begin time of obs><F>.<EXT> 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). ======================================================================
These data are available on-line from the Planetary Data System (PDS) at:
https://pdssbn.astro.umd.edu/holdings/ro-x-navcam-2-prl-com-v1.0/
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 |