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Richard McKim

I have written about these at the Mars Section 2020 blog page and am about to post an update which includes some further comments on the images by David and others. These projections are always interesting to see, and I think that with the martian atmosphere having been rather free from the effects of major dust storms for several months now that there has also been the very unusual chance to observe shadows of high clouds very close to the terminator: the projections themselves are not so rare, but observations of their shadows are. Because there is always some residual dustiness in the martian air, any details of the terminator must inevitably faded by absorption and scattering of light under oblique illumination.