David H. Atkinson Dept of Electrical & Computer Engineering University of Idaho 7 April 2005 Exploration of New Worlds: The Cassini / Huygens Mission to.

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Presentation transcript:

David H. Atkinson Dept of Electrical & Computer Engineering University of Idaho 7 April 2005 Exploration of New Worlds: The Cassini / Huygens Mission to Saturn and Titan

Cassini/Huygens

HST

Voyager 1

Cassini/Huygens Ready for launch

KSC, Cape Canaveral: 15 Oct 1997

11 June 2004

Cassini SOI: 1 July at 02:36 UT

Titan / VIMS

Christmas Day 2004

14 January years, 3 months and 4 billion km from launch

Huygens Descent on Titan From Atmospheric Entry To Touchdown on Surface 147 minutes

lifting Titan’s veil Yet do thy cheeks look red as Titan’s face W. Shakespeare

InvestigationAcronymPrincipal Investigator Huygens Atmosphere Structure Instrument HASIM. Fulchignoni, Obs. Paris-Meudon (F) Descent Imager/Spectral Radiometer DISRM. Tomasko, U. Arizona, Tucson, AZ (USA) Gas Chromatograph / Mass Spectrometer GCMS H. Niemann, NASA/GSFC, Greenbelt, MD (USA) Aerosol Collector and Pyrolyzer ACP G. Israel, SA-CNES, Verrieres-de-Buisson (F) Surface Science PackageSSPJ. Zarnecki, Open U., Milton Keynes (UK) Doppler Wind ExperimentDWEM. Bird, U. Bonn (D) Huygens Investigations

DISR: first images dry lakebed drainage canals; fluvial activity DISR: first images Methane Ground Fog Shoreline

16 km

DISR: side-looking imager h: 8 km res: 20 m

DISR: 360 Panorama ground fog h: 8 km; resolution: 20 m Wind drift velocity: 1-2 m/s landing site

SSP: Impact on Surface ‘wet sand or clay’ (crème brûlée)

DISR: on the surface 85 cm 5 cm ‘orange tint from reflectance spectra’ ‘dirty water ice, not hydrocarbon ice’

If it was easy, then it wouldn’t be worth doing or someone would have done it already. D. Atkinson ( i.e., “Nothing is perfect….”)

Huygens Doppler Wind Experiment Goal – To measure the east-west winds in the Atmosphere of Titan from 140 km to the surface

No power!

Earth Radio Telescope Antennas as seen from Titan: 14 Jan 2005

Parkes Radio Telescope, Australia (64 meter) Green Bank Radio Telescope, WV (100 meter)

Adieu, Huygens

Iapetus

Mimas

Enceladus

Upcoming Encounters

Titan April 16: 637 miles August 22: 2,336 miles September 7: 637 miles

Enceladus July miles

Mimas August 2 30,355 miles

Tethys September 24 18,504 miles

Hyperion September miles