by varadinagypal » Tue Aug 25, 2020 4:44 am
Chris, your words make sens.
I would really like to see a one revolution earlier image of Jupiter's side in question -- cause I have no data, and very few amateurs publish in an obvious and searchable manner -- and no, text embedded into an image is not searchable. As I photographed it two days later, when those longitudes became available to me again, all I found were some darker spots to the north of the dark protrusion chosen as a position of reference.
As for why the darker spots were on bands, as knots, and not in lighter regions, it could well be an artifact of the sharpening. At latitude N47 and with a city below Jupiter, my balcony is not the ideal observatory -- and in a very short time, it won't be an observatory thanks to "real estate development" (and I've been politically correct here). So this is kinda all the resolution I can squeeze out of the instruments and the given atmospheric conditions.