Cassini: The Grand Finale Webinar
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This document provides an overview of an educational webinar about the Cassini mission to Saturn, hosted by Brooks Mitchell and presented by Colin Mitchell. It includes information on upcoming professional development resources, scheduled webinars, and features of the Cassini spacecraft. The document highlights aspects of Saturn's rings, satellites, and data collected throughout the mission, culminating in its finale on September 15, 2017.
Cassini: The Grand Finale Webinar
- 1. Audio problems? Click and highlight the button at the top of your screen. You can also click “Meeting” > “Audio Setup Wizard”. You will not need microphone capabilities. Host: Brooks Mitchell, STAR_Net Education Coordinator Presenter: Colin Mitchell, Space Science Institute Researcher for the Cassini Mission Cassini: The Grand Finale August 30, 2017
- 2. Thanks to Our Sponsors
- 3. Join STAR_Net! Professional development resources, including webinars, newsletters, blogs, forums, videos, and much more!
- 4. Professional Development Resources Upcoming Webinars Out-of-This-World Activities • September 13th at 1:00 p.m. (MT) Celebrate Afterschool Partnerships with the Annual Lights on Afterschool! • September 9th at 1:00 p.m. (MT) International Observe the Moon Night • October 4th at 2:00 p.m. (MT) How-To Videos for Activities Scale Model of Sun and Earth Upcoming Conferences ARSL, ASTC, and more! Archived Webinars Busy? See what you missed!
- 5. For example: DIY Sun Cookies
- 6. Reminders Follow us on Social Media! • Facebook.com/STARLibraries • @STARNet_Project Sign up for our newsletter Certificate of Attendance via SurveyMonkey Link
- 7. Cassini Mission to Saturn: The Grand Finale
- 8. Make a CD Saturn
- 9. Dr. Colin Mitchell Research associate within the Cassini Imaging Central Laboratory for Operations (CICLOPS), working on analyzing Cassini Saturn ring images, as well as helping plan Cassini's mission and calibrating the Imaging Science Subsystem (ISS) instrument. Engaged in the study of the electromagnetic effects in Saturn's rings • In particular, he is studying the Saturn B ring spokes to study their dynamics and link to the planet's magnetic field Received his Bachelor's degree from Colorado State University in 1999 and his Doctorate from the University of Colorado in 2006.
- 10. Cassini Mission Finale Colin Mitchell Carolyn Porco Cassini Team August, 2017
- 11. Cassini’s Instruments ISS - IR to UV Imaging (Photometry) VIMS - Visible and IR Mapping Spectrometer UVIS - UV Imaging Spectrograph CIRS - Composite IR Spectrometer RSS - Radio Science Radar - Radar RPWS - Plasma Waves MIMI - Magnetosphere Imaging CAPS - Plasma Spectrometer INMS - Ion and Neutral Mass Spectrometer MAG - Magnetometer CDA - Cosmic Dust Analyzer
- 12. Cassini Orbiter & Huygens Probe Cassini Spacecraft Specs • Height: 6.8 m (22 ft) • Diameter: 4 m (13 ft) • Mass: 2125 kg (2.8 tons) (fueled+probe): 5574 kg (6 tons) • Power: 875 Watts at Launch 670 Watts currently • .5 GB recorder • Huygens Probe: 320 kg (~700 lbs)
- 13. Timetable Launched in October, 1997 (Titan IVB) Multiple Flybys of other planets (2 Venus, 1 Earth, 1 Jupiter) Arrived July, 2004 Finished Prime Mission July, 2008 Finished Equinox Mission July, 2010 Solstice Mission currently ongoing. End of Mission September 15, 2017
- 14. Launched on October 15, 1997 from KSC
- 16. Eclipse Mosaics
- 17. Saturnian Satellites and Rings
- 18. Enceladus VERY reflective (Albedo ~ 80%) “Tiger Stripes” Diameter ~ 505 km
- 19. Enceladus Plume Water ice Particles ~ 1 micron (10-6 meters)
- 20. Enceladus Plume ~ 100 sources along tiger stripes (Cold Faithful)
- 21. Enceladus Plume
- 22. Closest View South Polar Region Near terminator Many boulders 13 m per pixel
- 26. Feeding the E Ring Image Simulation
- 27. Propellers
- 28. Propellers
- 29. A Ring Moons Daphnis ~ 8 km Keeler Gap Pan ~ 28 km Encke Gap
- 30. Equinox Mosaic
- 31. Ring Ripples D and C ring corrugations
- 32. Mountains on the Edge ~3.5 km high
- 33. Titan seen by Voyager 2 Thick haze Surface invisible Liquids on surface? 5150 km (Moon is 3475 km)
- 34. Titan seen by Cassini Cassini’s filters can see through the haze Dark and bright terrain Few craters Lakes
- 35. Titan South Pole ISS Imaging Ontario Lacus 240 x 80 km Suspiciously lake-like feature VIMS: Liquid Ethane
- 36. Titan North Pole Kraken Mare (ISS) Specular Reflection (VIMS)
- 38. Titan seen by Huygens ~30k feet Images: ESA
- 39. Titan seen by Huygens Images: ESA
- 40. Saturn Storm and Vortex Storm was early (predicted around 2020)
- 41. End of Mission F ring orbits (Nov 2016 – Apr 2017) Proximal orbits (Apr 2017 – Sep 2017) Great Imaging Gravity data Burn up Sep 15, 2017
- 42. Final Orbits
- 43. Proximal Orbits Juno-like orbits Gravitational Field measurements Saturn internal structure •B Ring mass •Magnetic Field
- 45. Extra Slides If time permits!
- 46. Iapetus Dark Hemisphere 1450 km Albedo ~ 5% (Moon ~ 10%)
- 47. Iapetus Bright Hemisphere Albedo ~ 40%
- 48. Iapetus Ridge 13 km high by 20 km wide Collapsed ring? Cooling feature? Upwelling?
- 49. Iapetus Ridge Close Up
- 51. Tethys Streaks ● Red streaks
- 52. Tethys
- 53. Mimas 395 km
- 54. Janus and Epimetheus Nearly same orbit “Coorbital” Swap places every 4 years Janus: 180km Epimetheus: 115 km
- 55. F Ring
- 56. F Ring and Prometheus Inner Satellite: Prometheus 85 km Outer Satellite: Pandora 80 km
- 57. F Ring Gores Perturbations due to Prometheus
- 58. F Ring Clumps
- 59. F Ring Mosaics
- 60. Equinox Ring Scan Gap edges Ringlets in gaps
- 61. Equinox Ring Scan Resonance with Mimas at B ring edge Spokes
- 63. Spokes in the B Ring
- 64. Contrast Phase Dependence High Phase Low Phase
- 65. Lightning the Cause? Jones et al. 2006
- 66. G Ring Arc Similar to Neptune's arcs Resonance with Mimas (7:6)
- 67. G Ring moonlet (Aegaeon) Source of the G Ring?
- 68. Titan seen by Huygens Photo: ESA
- 69. Reminders You will be redirected to a SurveyMonkey link after the webinar ends. Complete the survey and you will be given the link for a Certificate of Attendance September 13th – “Out of This World Activities” (Click here to register) September 19th – “Lights on Afterschool” (Click here to register) October 4th – International Observe the Moon Night (Click here to register) All webinars are recorded and archived on http://www.starnetlibraries.org/resources/webinars/ Join starnetlibraries.org and like us on Facebook and Twitter! • Facebook.com/STARLibraries • Twitter: @STARNET_Project
- 70. Thank You!