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The Bruce Murray Space Image Library

33 Cassini views of Iapetus, March and April 2015

Filed under pretty pictures, Cassini, amateur image processing, Iapetus, Saturn's moons

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33 Cassini views of Iapetus, March and April 2015 Cassini took the images used to make these color composites through clear, ultraviolet, green, and infrared filters between March 26 and April 1, 2015. They show Iapetus' north pole above its leading hemisphere, which is coated with dark material that likely originated on Phoebe. The images are enlarged 2x from their original resolution.

NASA / JPL / SSI / Emily Lakdawalla

To make these images, a color composite was made by combining the ultraviolet, green, and average of two infrared frames into a single color photo. A grayscale image was made by stacking clear, ultravioet, green, and infrared frames in order to smooth out JPEG compression artifacts and reduce noise from cosmic ray hits. The color image was then overlaid on the grayscale image.

Here is an animation of the images.

Animation of Cassini's March 2015 Iapetus observations

NASA / JPL / SSI / Emily Lakdawalla

Animation of Cassini's March 2015 Iapetus observations
Cassini observed Iapetus 33 times over the course of a week from March 26 through April 1, 2015.

Original image data dated on or about April 1, 2015.

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. For uses not allowed by that license, contact us to request publication permission from the copyright holder: Emily Lakdawalla


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