Mosaic of Jupiter's north polar region

2018-04-09 23:55 UT
Credit : NASA / JPL-Caltech / SwRI / MSSS / ASI / INAF / JIRAM / Björn Jónsson © cc nc sa
Submitted By : Bjorn_Jonsson

A montage showing versions of a mosaic of JunoCam images from perijoves 1, 3, 4 and 5. The effects of the varying global illumination have been removed. The mosaic shows Jupiter's north polar region in orthographic projection from directly above. Because the north pole is in winter darkness, an inverted, heavily processed and colorized JIRAM mosaic was used to fill the gap at the north pole. This represents an attempt to guess what this area might look like in visible light. Small scale details in the cloud morphology should be fairly accurate/realistic but the overall contrast, brightness and color are based partially on a visual comparison of the JunoCam and JIRAM data farther from the pole where useful data from both instruments is available.

The JIRAM data appears a bit different from the JunoCam data in the mosaic. This is partially because the JIRAM data suggests that the area very near the pole really is a bit different from areas farther from the pole. Another factor is that the JIRAM data is of somewhat higher resolution than the JunoCam data and that unlike JunoCam, JIRAM it is not affected by the difficult illumination conditions in the far north.

Upper left: An approximately true color/contrast mosaic of Jupiter's north polar region.

Upper right: A mosaic of Jupiter's north polar region with enhanced colors and contrast.

Lower left: The approximately true color/contrast version with a latitude/longitude grid. Latitudes are planetographic.

Lower right: A diagram showing the areas covered by the different source images/data. Unless otherwise noted the data is from JunoCam.