This Voyager 2 mosaic shows Jupiter's limb. The images comprising the mosaic were acquired at a distance of ~745,000 km from Jupiter's center at a resolution of ~7 km/pixel. Color, contrast, and sharpness have been enhanced to better show various details.
NASA / JPL-Caltech / Björn Jónsson
Limb of Jupiter from Voyager 2 (approximate true color version)
Note how hints of Jupiter's blue sky are visible above Jupiter's limb.