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DAWN GRAND CALIBRATED (RDR) VESTA COUNTS V1.0

The GRaND Reduced Data Records (RDR) contain a time series of calibrated spectra, counting data, and ephemeris, pointing, and geometry (EPG) data. The data set is specific to Vesta encounter. The EPG data are contained in a single file, with an entry for every science data record acquired by GRaND at Vesta. Each record has a unique identifier, spacecraft clock ticks, which is used as a serial number to identify data from the same record in other files containing spectra and counting data. The RDR data set includes a time series of corrected gamma ray spectra acquired by GRaND's bismuth-germanate (BGO) scintillator.

DAWN FC2 RAW (EDR) MARS FLYBY IMAGES V1.0

Abstract ======== Framing Camera 2 is one of two identical units flying on Dawn spacecraft. This dataset includes the Experiment Data Record (EDR) version of all available images acquired during the Mars Flyby phase. In addition to the imagery, ancillary information is stored within the image headers. Calibration files needed for further processing are archived as a separate data set.

DAWN FC1 RAW (EDR) CERES IMAGES V1.0

Abstract ======== This dataset contains raw Framing Camera 1 (FC1) images sometimes called level-1a or EDR data. It includes images from the Dawn Ceres eXtended Mission Orbit 3 (XMO3, aka Ceres Extended GRaND - CXG) phase on 2017-02-19 and the Ceres eXtended Mission Orbit 4 (XMO4, aka Ceres Extended Opposition - CXO) phase on 2017-04-29. FC1 is one of two identical units flying on Dawn spacecraft. It was designated as the backup system to be used only in the event of a failure of the primary system, FC2. Prior to the Ceres extended mission, FC1 had only been used for in-flight calibration and to periodically exercise its various mechanisms (door, filter wheel, etc.). This is the only science dataset generated by FC1.

DAWN GRAND MAP CERES IRON MAP V1.0

A global map of the concentration of iron within the regolith of asteroid 1 Ceres on twenty-degree quasi-equal-area pixels is provided. Iron concentrations were determined from gamma ray counting data acquired by Dawn's Gamma Ray and Neutron Detector (GRaND) in a low altitude mapping orbit, about 385 km from Ceres' surface (about 0.8 body radii altitude). The concentrations are representative of Ceres's bulk regolith to depths up to a few decimeters with a spatial resolution of about 600-km full-width-at-half-maximum of arc length on the surface. The methods used to determine iron concentration are described by PRETTYMANETAL2017.

DAWN VIR RAW (EDR) VESTA INFRARED SPECTRA V2.0

This data set contains the raw infrared channel digital numbers (DN) contained in the telemetry packages taken by the Dawn VIR spectrometer for all Vesta encounter mission phaes. The data in this version of the data set include minor updates to the data files and labels. The data cover the time period between 2011-05-03 and 2012-07-18.

DAWN SPICE KERNELS V1.0

This data set includes the complete set of DAWN SPICE data files (``kernel files''), which can be accessed using SPICE software. The SPICE data contain geometric and other ancillary information needed to recover the full value of science instrument data. In particular SPICE kernels provide spacecraft and planetary ephemerides, instrument mounting alignments, spacecraft orientation, and data needed for relevant time conversions.

DAWN FC2 CALIBRATED CRUISE CHECKOUT/CALIB IMAGES V1.0

Abstract ======== Framing Camera 2 is one of two identical units flying on Dawn spacecraft. This dataset includes the Reduced Data Record (RDR) version of all available images acquired during the initial checkout and pre-Vesta cruise phases (Checkout, Earth to Mars, and Mars to Vesta). As in the original raw data sets, in addition to the imagery, ancillary information is stored within the image headers, as well as a detailed account of all the reference files used for the calibration. Calibration files needed for further processing are archived as a separate data set.

DAWN VIR CAL (RDR) CRUISE CHECKOUT/CALIB IR SPECTRA V1.0

This data set contains the spectral radiance (W/(m**2*sr*micron)) data from the Dawn VIR instrument IR channel for all cruise mission phases. The data are from the cruise phase from launch to Vesta (Sep 2009-May 2011), and Vesta to Ceres (Sep 2012-Dec 2014).

DAWN VIR RAW (EDR) VESTA VISIBLE SPECTRA V2.0

This volume contains the digital numbers (DN) contained in the telemetry (TM) packages of the VIR instrument on board of the spacecraft DAWN. The data are from the Vesta Encounter phase, which occurred 2011-05-03 to 2012-07-18.

DAWN FC1 CALIBRATED CERES IMAGES V1.0

Abstract ======== This dataset contains calibrated Framing Camera 1 (FC1) images sometimes called level-1b or reduced data. It includes images from the Dawn Ceres eXtended Mission Orbit 3 (XMO3, aka Ceres Extended GRaND - CXG) phase on 2017-02-19 and the Ceres eXtended Mission Orbit 4 (XMO4, aka Ceres Extended Opposition - CXO) phase on 2017-04-29. FC1 is one of two identical units flying on Dawn spacecraft. It was designated as the backup system to be used only in the event of a failure of the primary system, FC2. Prior to the Ceres extended mission, FC1 had only been used for in-flight calibration and to periodically exercise its various mechanisms (door, filter wheel, etc.). This is the only science dataset generated by FC1.

DAWN FC1 RAW (EDR) CRUISE CHECKOUT/CALIBRATION IMAGES V1.0

Abstract ======== Framing Camera 1 is one of two identical units flying on Dawn spacecraft. This dataset includes the Experiment Data Record (EDR) version of all available images acquired during the initial checkout and all cruise phases (Earth to Mars, Mars to Vesta and Vesta to Ceres). In addition to the imagery, anciliary information is stored within the image headers. Calibration files needed for further processing are archived as a separate data set.

DAWN VIR RAW (EDR) CERES VISIBLE SPECTRA V1.0

This volume contains the digital numbers (DN) contained in the telemetry (TM) packages of the VIR-VIS instrument on board of the spacecraft DAWN. The data are from the Ceres Encounter phase, which occurred 2014-12-26 to 2016-06-30.

DAWN FC2 DERIVED CERES HAMO DTM SPG V1.0

Abstract ======== This data set contains the Ceres digital terrain model based on the Dawn High Altitude Mapping orbit (HAMO) Framing Camera 2 (FC2) images and derived by using the stereo photo-grametric (SPG) method. The HAMO DTM covers approximately 98% of the Ceres surface (few permanently shadowed areas near the poles required interpolation). The a DTM has a lateral spacing of ~136.7 m/pixel (60 pixel/degree) and a vertical accuracy of about 10 m.

DAWN VIR CAL (RDR) CERES VISIBLE SPECTRA V1.0

This data set contains the spectral radiance (W/(m**2*sr*micron)) data from the Dawn VIR instrument visible channel for all Ceres encounter mission phases. The data cover the time period between 2014-12-26 and 2016-06-01.

DAWN VESTA GRAVITY SCIENCE DERIVED SCIENCE DATA V1.0

This data set contains archival results from gravity investigations conducted during the Dawn mission while the spacecraft was in orbit around the asteroid Vesta. Radio measurements were made using the Dawn spacecraft and Earth-based stations of the NASA Deep Space Network (DSN). The data set includes a spherical harmonic model of Vesta's gravity field generated by the Jet Propulsion Laboratory and radial gravity acceleration map; these results were derived from raw radio tracking data.

DAWN VESTA RAW GRAVITY SCIENCE V1.0

This data set contains archival raw, partially processed, and ancillary/supporting gravity science data acquired during the Dawn mission while the spacecraft was in orbit around the asteroid Vesta. The radio observations were carried out using the Dawn spacecraft and Earth-based receiving stations of the NASA Deep Space Network (DSN). The data set was designed primarily to support generation of high-resolution gravity field models for Vesta. Of most interest are likely to be the Orbit Data Files in the ODF directory, which provided the raw input to gravity investigations, as well as the ionospheric and tropospheric media calibration files in the ION and TRO directories, respectively.

DAWN GRAND CALIBRATED (RDR) CERES COUNTS V1.0

The GRaND Reduced Data Records (RDR) contain a time series of calibrated spectra, counting data, and ephemeris, pointing, and geometry (EPG) data. The EPG data are contained in a single file, with an entry for every science data record acquired by GRaND within the dataset start-stop times. Each record has a unique identifier, spacecraft clock ticks, which is used as a serial number to identify data from the same record in other files containing spectra and counting data. The RDR data set includes a time series of corrected gamma ray spectra acquired by GRaND's bismuth-germanate (BGO) scintillator.

DAWN VIR RAW (EDR) CERES INFRARED SPECTRA V1.0

This volume contains the digital numbers (DN) contained in the telemetry (TM) packages of the VIR-IR instrument on board of the spacecraft DAWN. The data are from the Ceres Encounter phase, which occurred 2014-12-26 to 2016-06-30.