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Collection:
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NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
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Title:
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Two Ultraviolet Views of Iapetus
Title
Two Ultraviolet Views of Iapetus
Title
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Original Caption Released with Image:
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The far left image shows the bright-dark boundary region on Saturn's moon Iapetus at far-ultraviolet wavelengths, viewed by Cassini's ultraviolet imaging spectrograph on Sept. 10, 2007. These wavelengths represent reflected solar light and indicate where the surface is brightest and highest in water ice abundance. (Red indicates the brightest regions, purple the darkest.) The bright "Voyager Mountains," part of the equatorial ridge, are seen as bright spots against a dark background. The dark material that covers one hemisphere of Iapetus is indicated in purple and is seen on the right side of this image. The middle image is a color composite: blue-green (longer ultraviolet wavelengths) indicates where the surface is bright and probably richest in water ice. Red (short ultraviolet wavelengths) indicates where the surface is low in water ice and relatively high in dirty material. The sky background is also bright at these wavelengths, making the limb, or edge, of Iapetus where the surface is dark indistinguishable from the sky background. The image on the right, taken by the imaging science subsystem, is for reference, with the regions observed by Cassini's ultraviolet imaging spectrometer outlined in red. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The ultraviolet imaging spectrograph was designed and built at, and the team is based at the University of Colorado, Boulder. The imaging operations center is based at the Space Science Institute in Boulder, Colo. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov/home/index.cfm. The ultraviolet imaging spectrograph team home page is at http://lasp.colorado.edu/cassini. The Cassini imaging team homepage is at http://ciclops.org.
Original_Caption_Rel eased_with_Image
The far left image shows the bright-dark boundary region on Saturn's moon Iapetus at far-ultraviolet wavelengths, viewed by Cassini's ultraviolet imaging spectrograph on Sept. 10, 2007. These wavelengths represent reflected solar light and indicate where the surface is brightest and highest in water ice abundance. (Red indicates the brightest regions, purple the darkest.) The bright "Voyager Mountains," part of the equatorial ridge, are seen as bright spots against a dark background. The dark material that covers one hemisphere of Iapetus is indicated in purple and is seen on the right side of this image. The middle image is a color composite: blue-green (longer ultraviolet wavelengths) indicates where the surface is bright and probably richest in water ice. Red (short ultraviolet wavelengths) indicates where the surface is low in water ice and relatively high in dirty material. The sky background is also bright at these wavelengths, making the limb, or edge, of Iapetus where the surface is dark indistinguishable from the sky background. The image on the right, taken by the imaging science subsystem, is for reference, with the regions observed by Cassini's ultraviolet imaging spectrometer outlined in red. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The ultraviolet imaging spectrograph was designed and built at, and the team is based at the University of Colorado, Boulder. The imaging operations center is based at the Space Science Institute in Boulder, Colo. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov/home/index.cfm. The ultraviolet imaging spectrograph team home page is at http://lasp.colorado.edu/cassini. The Cassini imaging team homepage is at http://ciclops.org. Original Caption Released with Image
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Image Credit:
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NASA/JPL/University of Colorado/Space Science Institute
Image_Credit
NASA/JPL/University of Colorado/Space Science Institute
Image Credit
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Produced By:
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NASA/JPL/University of Colorado
Boulder
Produced_By
NASA/JPL/University of Colorado
Boulder
Produced By
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Mission:
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Cassini
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Spacecraft:
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Cassini Orbiter
Spacecraft
Cassini Orbiter
Spacecraft
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Target Name:
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Iapetus
Target_Name
Iapetus
Target Name
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Is a satellite of:
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Saturn
Is_a_satellite_of
Saturn
Is a satellite of
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Instrument:
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Ultraviolet Imaging Spectrograph
Instrument
Ultraviolet Imaging Spectrograph
Instrument
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Product Size:
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3618 samples x 796 lines
Product_Size
3618 samples x 796 lines
Product Size
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Primary Data Set:
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Cassini
Primary_Data_Set
Cassini
Primary Data Set
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facet_what:
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Moon
facet_what
Moon
facet_what
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facet_what:
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Voyager
facet_what
Voyager
facet_what
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facet_what:
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Spectrometer
facet_what
Spectrometer
facet_what
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facet_what:
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Saturn
facet_what
Saturn
facet_what
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facet_what:
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Cassini
facet_what
Cassini
facet_what
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facet_what:
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Iapetus
facet_what
Iapetus
facet_what
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facet_what:
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Cassini Orbiter
facet_what
Cassini Orbiter
facet_what
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facet_what:
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Huygens Probe
facet_what
Huygens Probe
facet_what
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facet_what:
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Cassini-Huygens
facet_what
Cassini-Huygens
facet_what
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facet_what:
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Imaging Science Subsystem (ISS)
facet_what
Imaging Science Subsystem (ISS)
facet_what
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facet_what:
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Ultraviolet Imaging Spectrograph (UVIS)
facet_what
Ultraviolet Imaging Spectrograph (UVIS)
facet_what
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facet_where:
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Saturn
facet_where
Saturn
facet_where
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facet_where:
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California
facet_where
California
facet_where
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facet_where:
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Washington
facet_where
Washington
facet_where
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facet_where:
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Colorado
facet_where
Colorado
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_where:
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Washington, D.C.
facet_where
Washington, D.C.
facet_where
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Image #:
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PIA10009
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UID:
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SPD-PHOTJ-PIA10009
UID
SPD-PHOTJ-PIA10009
UID
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orignial url:
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orignial_url
orignial url
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