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High-Resolution Ceres HAMO Atlas derived from Dawn-FC images

Roatsch, Thomas and Kersten, Elke and Matz, Klaus-Dieter and Preusker, Frank and Scholten, Frank and Jaumann, Ralf and Raymond, C. A. and Russell, C. T. (2015) High-Resolution Ceres HAMO Atlas derived from Dawn-FC images. AGU Fall meeting 2015, 14-18 Dec 2015, San Francisco.

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Introduction: NASA’s Dawn spacecraft will orbit the dwarf planet Ceres in August and September 2015 in HAMO (High Altitude Mapping Orbit) with an altitude of about 1,500 km to characterize for instance the geology, topography, and shape of Ceres before it will be transferred to the lowest orbit. One of the major goals of this mission phase is the global mapping of Ceres. Data: The Dawn mission is equipped with a fram-ing camera (FC). The framing camera will take about 2600 clear filter images with a resolution of about 120 m/pixel and different viewing angles and different illumination conditions. Data Processing: The first step of the processing chain towards the cartographic products is to ortho-rectify the images to the proper scale and map projec-tion type. This process requires detailed information of the Dawn orbit and attitude data and of the topography of the target. Both, improved orientation and high-resolution shape models, are provided by stereo processing of the HAMO dataset. Ceres' HAMO shape model is used for the calculation of the ray intersection points while the map projection itself will be done onto a reference sphere for Ceres. The final step is the controlled mosaicking of all nadir images to a global mosaic of Ceres, the so called basemap. Ceres map tiles: The Ceres atlas will be produced in a scale of 1:750,000 and will consist of 15 tiles that conform to the quadrangle schema for small planets and medium size Icy satellites. A map scale of 1:750,000 guarantees a mapping at the highest availa-ble Dawn resolution in HAMO. Nomenclature: The Dawn team proposed to the International Astronomical Union (IAU) to use the names of gods and goddesses of agriculture and vege-tation from world mythology as names for the craters. This proposal was accepted by the IAU and the team proposed names for geological features to the IAU based on the HAMO mosaic. These feature names will be applied to the map tiles.

Item URL in elib:https://elib.dlr.de/100434/
Document Type:Conference or Workshop Item (Poster)
Title:High-Resolution Ceres HAMO Atlas derived from Dawn-FC images
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Roatsch, Thomasthomas.roatsch (at) dlr.deUNSPECIFIED
Kersten, Elkeelke.kersten (at) dlr.deUNSPECIFIED
Matz, Klaus-Dieterklaus-dieter.matz (at) dlr.deUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Scholten, Frankfrank.scholten (at) dlr.deUNSPECIFIED
Jaumann, Ralfralf.jaumann (at) dlr.deUNSPECIFIED
Raymond, C. A.Carol.A.Raymond (at) jpl.nasa.govUNSPECIFIED
Russell, C. T.ctrussel (at) igpp.ucla.eduUNSPECIFIED
Date:18 December 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Ceres, Dwarf planets, Dawn mission
Event Title:AGU Fall meeting 2015
Event Location:San Francisco
Event Type:international Conference
Event Dates:14-18 Dec 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt DAWN
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Institute of Planetary Research > Planetary Geodesy
Deposited By: Roatsch, Dr.rer.nat. Thomas
Deposited On:17 Dec 2015 08:52
Last Modified:10 May 2016 23:37

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