| First imaging results from the Iapetus B/C flyby of the Cassini spacecraft (2005) | |||||||||||||
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| Lunar and Planetary Science XXXVI pdf FIRST IMAGING RESULTS FROM THE IAPETUS FLYBY THE CASSINI SPACECRAFT Denk Neukum Roatsch McEwen Turtle Thomas Helfenstein Wagner Porco Perry Giese Johnson Veverka and the Cassini ISS Team Freie Universit Berlin Malteserstr Haus Berlin Germany denk zedat berlin DLR German Aerospace Center Berlin University Arizona Tucson Cornell University Ithaca Space Science Institute Boulder JPL Pasadena Abstract Introduction The first two relatively close Iapetus flybys Cassini primary mission occured Dec UTC near apoapsis from orbit altitude over the northern leading hemisphere resulting minimum pixel scale for the ISS narrow angle camera NAC Data revealed details long ridge that had been discovered just one week earlier optical navigation images Individual mountains within the western part the ridge reach heights over surrounding terrain The data set provides constraints the origin the albedo dichotomy appears very likely that the dark material overlying ice crust but evidence for emplacement dark material via surface flows apparent Instead signs for dark material emplacement through processes that included ballistic transportation are visi ble bright floor punch through craters have been found the dark hemisphere The ridge discovery may revive the idea endogenic origin the dark side Data acquisition All planned images were successfully transmitted Earth total NAC mosaics were obtained ranging spatial resolution from and then back pxl The phase angle | |||||||||||||
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