Hi Bob & All
Quote:
Originally Posted by Tropo-Bob
I agree 100%. I have not seen it this good since the early 1970s when it was brick red. One outcome is that I can now see the GRS closer to Jupiter's limb than in previous years.
Explanation: My guess it is bring up some deeper material from a lower layer, but why and what, I have no idea.
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Yes, it is more deeply coloured in the last two apparitions than I can remember in the last +20 years. When I started watching Jupiter in the early 70s, it was easier to spot than carrot in an omelette -- rich brick red in colour. It has now regained much of its former lustre, though somewhat smaller than it was earlier. The most likely reason, as some have said, is that material from deeper-in has been dredged up and that the high-haze in the Jovian atmosphere (that can mute its colour) isn't being draped over it to the same extent.
Best,
L.