Voyager 1 Jupiter cloud timelapse animation

Credit: NASA / JPL / Björn Jónsson / Ian Regan Every second in this movie corresponds to 1 Jupiter day or about 10 Earth hours. This movie began as a 16-frame animation of Voyager 1 images of Jupiter. Each of the 16 images was composed by Björn Jónsson from three Voyager frames taken through orange, green, and blue filters, which he reprojected into a cylindrical map, aligned, and then projected back into the slightly squashed spherical shape of Jupiter. (This reprojection step is necessary because around two minutes elapsed between each of the component images, which, because of Jupiter’s fast rotation, would result in color ghosting if they were simply overlaid.) Jónsson selected sets of images featuring the Great Red Spot near the center of Jupiter’s disk, one per Jupiter day, and reprojected them to maintain a constant position for the Spot. By holding the GRS still he highlights the motions of the clouds that happen from Jupiter day to Jupiter day. Ian