File:PIA02863 - Jupiter surface motion animation thumbnail 720px 10fps.ogv
PIA02863_-_Jupiter_surface_motion_animation_thumbnail_720px_10fps.ogv (Ogg Theora video file, length 1.4 s, 720 × 240 pixels, 3.4 Mbps, file size: 581 KB)
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Summary
DescriptionPIA02863 - Jupiter surface motion animation thumbnail 720px 10fps.ogv |
English: Original Caption Released with Image:
"The first color movie of Jupiter from NASA's Cassini spacecraft shows what it would look like to peel the entire globe of Jupiter, stretch it out on a wall into the form of a rectangular map, and watch its atmosphere evolve with time. The brief movie clip spans 24 Jupiter rotations between Oct. 31 and Nov. 9, 2000. Various patterns of motion are apparent all across Jupiter at the cloudtop level seen here. The Great Red Spot shows its counterclockwise rotation, and the uneven distribution of its high haze is obvious. To the east (right) of the Red Spot, oval storms, like ball bearings, roll over and pass each other. Horizontal bands adjacent to each other move at different rates. Strings of small storms rotate around northern-hemisphere ovals. The large grayish-blue "hot spots' at the northern edge of the white Equatorial Zone change over the course of time as they march eastward across the planet. Ovals in the north rotate counter to those in the south. Small, very bright features appear quickly and randomly in turbulent regions, candidates for lightning storms. The clip consists of 14 unevenly spaced timesteps, each a true color cylindrical projection of the complete circumference of Jupiter, from 60 degrees south to 60 degrees north. The maps are made by first assembling mosaics of six images taken by Cassini's narrow-angle camera in the same spectral filter over the course of one Jupiter rotation and, consequently, covering the whole planet. Three such global maps -- in red, green and blue filters -- are combined to make one color map showing Jupiter during one Jovian rotation. Fourteen such maps, spanning 24 Jovian rotations at uneven time intervals comprise the movie. The maps were reduced in scale by a factor of two to make them accessible on the Internet at reasonable rates. Occasional appearances of Io, Europa, and their shadows have not been removed. The smallest visible features at the equator are about 600 kilometers (about 370 miles) across. In a map of this nature, the most extreme northern and southern latitudes are unnaturally stretched out. Cassini 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 mission for NASA's Office of Space Science, Washington, D.C. This ten frames per second Theora video is downscaled to 720 pixels wide at maximum quality from original NASA GIF. |
Date | Oct. 31 and Nov. 9, 2000 |
Source |
http://photojournal.jpl.nasa.gov/archive/PIA02863.gif linked from http://photojournal.jpl.nasa.gov/animation/PIA02863, transcoded and downscaled to a maximum quality (10), each frame forced to be a keyframe Theora video, using programs MPlayer for Windows (version 0.6.9+SVN-r3532 using Qt 4.6.2 using MPlayer SVN r31170) and png2theora (version 1.1 binary build from 20100523) as follows: mplayer.exe -vo png PIA02863.gif use IrfanView to downscale the PNG files to 720 pixels wide to the sequence 001.png to 014.png; 20100523\png2theora.exe %03d.png --video-quality 10 --framerate-numerator 10 --framerate-denominator 1 --keyframe-freq 1 -o PIA02863_-_Jupiter_surface_motion_animation_thumbnail_720px_10fps.ogv |
Author | NASA/JPL/University of Arizona |
Permission (Reusing this file) |
PD-USGOV-NASA. |
Other versions |
File:PIA02863 - Jupiter surface motion animation 1fps.ogv <-- Full size Theora video one frame per second 1800 pixels wide File:PIA02863 - Jupiter surface motion animation 10fps.ogv <-- Full size Theora video ten frames per second 1800 pixels wide File:PIA02863 - Jupiter surface motion animation.gif <-- Full size animated GIF 1799 pixels wide |
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This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA02863. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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Licensing
Public domainPublic domainfalsefalse |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:11, 29 May 2010 | 1.4 s, 720 × 240 (581 KB) | 84user | == {{int:filedesc}} == {{Information |Description={{en|Original Caption Released with Image: "The first color movie of Jupiter from NASA's Cassini spacecraft shows what it would look like to peel the entire globe of Jupiter, stretch it out on a wall into |
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Software used | Xiph.Org libtheora 1.1 20090822 (Thusnelda) |
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