Data Set Information
|
DATA_SET_NAME |
ROSETTA-ORBITER 67P/CAL ALICE 3 EXT2 V1.0
|
DATA_SET_ID |
RO-C/CAL-ALICE-3-EXT2-V1.0
|
NSSDC_DATA_SET_ID |
|
DATA_SET_TERSE_DESCRIPTION |
Calibrated instrument data from the
Rosetta Orbiter ALICE instrument during the EXT2 mission phase
|
DATA_SET_DESCRIPTION |
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 2 mission
phase, which took place between 2016-04-06 and 2016-06-30.
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 t=START_TIME. Distances are given in km, angles in degrees.
The 67P/C-G_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.
|
DATA_SET_RELEASE_DATE |
2016-12-16T00:00:00.000Z
|
START_TIME |
2016-04-06T07:10:02.119Z
|
STOP_TIME |
2016-07-01T12:01:54.758Z
|
MISSION_NAME |
INTERNATIONAL ROSETTA MISSION
|
MISSION_START_DATE |
1995-03-01T12:00:00.000Z
|
MISSION_STOP_DATE |
N/A (ongoing)
|
TARGET_NAME |
CALIBRATION
67P/CHURYUMOV-GERASIMENKO 1 (1969 R1)
|
TARGET_TYPE |
CALIBRATION
COMET
|
INSTRUMENT_HOST_ID |
RO
|
INSTRUMENT_NAME |
ALICE
|
INSTRUMENT_ID |
ALICE
|
INSTRUMENT_TYPE |
ULTRAVIOLET SPECTROMETER
|
NODE_NAME |
Small Bodies
|
ARCHIVE_STATUS |
SUPERSEDED
|
CONFIDENCE_LEVEL_NOTE |
Confidence Level Overview
=========================
Data confidence is nominal, meaning that all data have been
validated by the Alice team and found as expected. Any exceptions
are noted by the DATA_QUALITY field in the label files.
Review
======
Data Coverage and Quality
=========================
Data quality is good unless otherwise noted by the DATA_QUALITY
keyword.
Limitations
===========
Although these data have been calibrated and are in physical
units, the wavelength scale is unique to each individial
file. Thus, care must be taken when comparing one data file to
another. The Alice team recommends using the reformatted,
calibrated CODMAC level 4 data products, which solves this
problem.
|
CITATION_DESCRIPTION |
Steffl, A. J., Kaufmann, D. E.,
Parker, J. Wm., and S. A. Stern,
ROSETTA-ORBITER 67P/CAL ALICE 3 EXT2 V1.0,
RO-C/CAL-ALICE-3-EXT2-V1.0,
ESA Planetary Science Archive and NASA Planetary Data System, 2017.
|
ABSTRACT_TEXT |
This data set contains CODMAC Level 3 data
acquired by the Rosetta Orbiter ALICE UV Spectrometer during the
comet 67P/Churyumov-Gerasimenko Rosetta Extension 2 mission phase,
which took place between 2016-04-06 and 2016-06-30.
|
PRODUCER_FULL_NAME |
ANDREW J. STEFFL
|
SEARCH/ACCESS DATA |
SBN Comet Website
|
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