Perijove 1 (PJ1), August 27, 2016 |
Perijove 1 (PJ1), August 27, 2016 |
Sep 2 2016, 04:45 PM
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#1
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
New images released!
And raw images at various processing levels from PJ1 are now in the JunoCam gallery. -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Dec 12 2016, 12:33 PM
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#2
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
After a more thorough analysis of images #6160 and #6162, I see a very good chance at least, to analyse optical properties of Jupiter's global haze layer quantitatively. Here reduced data (blue) compared to a function (red) which I think, can be interpreted as a horribly simplified haze scattering and extinction model:
The oversimplified model breaks down, where the haze becomes opaque when seen from the Sun or from the observer. Nevertheless I was stunningly surprised, when I saw the reduced data, and the ease with which a simple function could be fit into the data, even before I had an idea how to interprete this, since real non-lab data rarely fit to a simple function. After I suspected light scattering of Jupiter's haze as a possible root cause, I failed to readily find an according easy formula for light scattering in the web. So I did a quick and dirty back-of-an-envelope calculation, and found a 1st-order simplification which seems to explain the empirically identified type of functions. Besides the immediate science value, a good model of the haze will help to improve the creation of maps and images of the cloud top below the haze. The latter is what I'll try to get implemented before PJ3 image data will be published in a few days. |
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