RO-C-CAL-ALICE-3-EXT3

Required Reading The format of all Alice data are described in detail by the EAICD document located in the /DOCUMENT directory. The Alice team strongly recommends reading this documentation before using the data. Data Set Overview This data set contains calibrated data acquired by the Rosetta Orbiter ALICE UV Spectrometer during the Rosetta Extension 3 mission phase, which took place between 20160701 and 20160930. Processing The data in this data set are calibrated, CODMAC Level 3 data. As such, corrections for detector dead time, dark counts, flatfield, and effective area have generally been applied. The primary FITS header contains a list of which corrections have been applied to that file. See the CALIBRATION_COOKBOOK.PDF in the DOCUMENT directory for more information. Data The data are in FITS format and text format. Each FITS file has a detached PDS label so that they can be read either by FITS or PDS tools. A detailed description of the data format is given in the ALICE EAICD document located in the DOCUMENT directory of this data set. Ancillary Data No ancillary data included in this data set. Coordinate System The geometry items SC_SUN_POSITION_VECTOR, SC_TARGET_POSITION_VECTOR and SC_TARGET_VELOCITY_VECTOR provided in the label of the data product are relative to the Earth Mean Equator and Equinox frame of J2000. SUB_SPACECRAFT_LATITUDE, SUB_SPACECRAFT_LONGITUDE are given in the Cheops reference frame. These parameters are computed at time tSTART_TIME. Distances are given in km, angles in degrees. The 67P/CG_CK comet frame is defined by the kernel file, ROS_CHURYUMOV_V01.TF. Software All FITS readers should be able to successfully read the data. Updates for Volume Version 2 The main changes in volume version 2 are the inclusion of an updated RosettaAlice Experiment User Manual and truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]