CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Cassini's Views of Titan
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Cassini's Views of Titan
PIA 06227

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Cassini's Views of Titan
PIA 06230

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Cassini's Views of Titan
PIA 06228

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Cassini's Views of Titan
PIA 06229

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  These three views of Titan illustrate how different the same place can look in different wavelengths of light. Cassini's cameras have numerous filters that reveal features above and beneath the shroud of Titanís atmosphere.

The first image, a natural color composite, is a combination of images taken through three filters that are sensitive to red, green and violet light. It shows approximately what Titan would look like to the human eye: a hazy orange globe surrounded by a tenuous, bluish haze. The orange color is due to the hydrocarbon particles which make up Titan's atmospheric haze. This obscuring haze was particularly frustrating for planetary scientists following the Voyager mission encounters in 1980-81. Fortunately, Cassini is able to pierce Titan's veil at infrared wavelengths.

The second, monochrome view shows what Titan looks like at 938 nanometers, a near-infrared wavelength that allows Cassini to see through the hazy atmosphere and down to the surface. The view was created by combining three separate images taken with this filter, in order to improve the visibility of surface features. The variations in brightness on the surface are real differences in the reflectivity of the materials on Titan.

The third view, which is a false-color composite, was created by combining two infrared images (taken at 938 and 889 nanometers) with a visible light image (taken at 420 nanometers). Green represents areas where Cassini is able to see down to the surface. Red represents areas high in Titan's stratosphere where atmospheric methane is absorbing sunlight. Blue along the moonís outer edge represents visible violet wavelengths at which the upper atmosphere and detached hazes are better seen.

A similar false-color image showing the opposite hemisphere of Titan was created from images taken during Cassini's first close flyby of the smoggy moon in October 2004 (see PIA06139). At that time, clouds could be seen near Titan's south pole, but in these more recent observations no clouds are seen.

The individual images from this montage are reproduced here as well.

North on Titan is up and tilted 30 degrees to the right.

All of these images were taken with the wide angle camera on April 16, 2005 from distances ranging from approximately 173,000 to 168,200 kilometers (107,500 to 104,500 miles) from Titan and from a Sun-Titan-spacecraft, or phase, angle of 56 degrees. Resolution in the images approximately 10 kilometers per pixel.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission, visit http://saturn.jpl.nasa.gov and the Cassini imaging team home page, http://ciclops.org.

Credit: NASA/JPL/Space Science Institute
Released: April 22, 2005 (PIA 06227, 06228, 06229, 06230)
Image/Caption Information


Alliance Member Comments
carolyn (CICLOPS) (Dec 30, 2007 at 7:43 AM):
One suggestion is that the volcanoes on Titan, if they truly are there, are belching methane, which is present in large supply on Titan and in order to remain in equilibrium, must be re-supplied (since it is destroyed in the upper atmosphere).
I am Borg (Dec 26, 2007 at 3:40 PM):
Carolyn hope you had a very nice Christmas. I have a question for you. On Facebook, I belong to Volcanonet group. There is a picture there of a volcanic dome on Titan. There really wasn't much else said about this. The image is attributed to JPL/Caltech. I went there, but couldn't find anything. I was surprised to see a volcanic dome. First I've heard of volcanic activity on Titan. Curious about what kind of material it would be ejecting.
carolyn (CICLOPS) (Dec 26, 2007 at 12:39 PM):
You don't have to worry about lighting matches right now because there is no free oxygen in Titan's atmosphere. So though there is plenty of methane gas around, it could not possibly ignite. - C
graupma (Dec 24, 2007 at 1:27 PM):
when we learn how to terra form TITAN, and convert methane etc into hydrogen and oxygen, etc., this would make a nice vacation spot...
don't light any matches right now...

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