Voyager 2 Jupiter Images – Great Red Spot

Great Red Spot
This is a 5x3 mosaic of images obtained on July 8, 1979 when Voyager 2 was ~1.45 million km from Jupiter. I processed this data back in 2010 - this caption is based on a caption I wrote back then with only minimal changes. The resolution of the original images is ~14 km/pixel. The resolution of this mosaic is similar. This is a slightly higher resolution than in the highest resolution Voyager 1 GRS mosaic covering the entire spot. Each of the 15 frames making up the mosaic is a color composite from orange, green and violet images. This results in more accurate color than in my earlier Voyager 1 GRS mosaic because in that case I had no green images I could use. Thanks to this the color variations in this mosaic seem more interesting. As far as I know this is completely new stuff. Very few and possibly none of the images I used have appeared earlier in official image releases, at least not in color. There is a fairly well known Voyager 2 mosaic of the GRS but that one is composed from images obtained three Jovian rotations earlier at a range of 2.6 million km (see http://photojournal.jpl.nasa.gov/catalog/PIA00065). Thanks to modern computers and software the quality of this new mosaic is higher. This mosaic contains lots of interesting stuff, including small scale details and interesting color variations. Cloud shadows are visible, in particular at (3040,2040) and nearby. The color variations seem more interesting here than in the Voyager 1 mosaic, probably because the color is more accurate. There is an interesting brownish/orange 'band' near (1180,615) for example. Also the color changes from brownish to whitish near (900,1300) without any obvious changes to the 'texture' of the image (the wind is northnortheasterly at this location). I could name at least 10 additional features that look interesting to me and where I wish I knew what was happening. The Voyager 1 images of Jupiter (and not the least the GRS) are probably better known than the Voyager 2 images, mainly because Voyager 1 arrived earlier. So yet again in a way I feel like I'm looking at images from a new Jupiter flyby. The GRS region looks more 'Galileo-like' to me in the Voyager 2 images than it does in the Voyager 1 images.

Great Red Spot (true color)

An approximately true color/contrast version of the mosaic.

Great red spot (enhanced)

Click any thumbnail to view the full-size image. Full-size versions may be much larger than the thumbnails.