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Which way up for Jupiter?
I've posted this thread here, rather than in the Observational forum as the question has to do with the presentation of an image. And I'm sure this will gather as much debate as the ol' fall back Winter discussion on Omega/47 Tuc.
As I look through the Solar System Forum at images of Jupiter I see the mighy planet in all sorts of orientations. GRS at the top, GRS at the bottom, festoons sweeping to the east and festoons sweeping to the west. Now I'm aware that how the image ends up depends on the type of scope you are using and the image magnification system, but,...........What is the correct way up and which direction should the festoons be sweepiing (ie should the planet be seen sweeping from left to right or from right to left). Are there any international standard for this prickly question?
Example images. The first was taken with the 8" sct with a barlow (negative projection) and the second using eyepiece projection (positive projection)
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