MAPS OF JUPITER’S NORTH POLAR REGION

This page presents sets of polar projection maps of Jupiter’s north polar region from JunoCam. They are composite RGB maps from PJ1 to PJ40 (except for PJ2 and PJ19, when the northern hemisphere was not imaged). They are all in polar azimuthal equidistant projection with planetocentric latitude scales, at 10 pixels/degree.  All have L3=0 to the right. 

The raw images were processed and map-projected by Gerald Eichstädt, then the single-image maps were composited by John Rogers in Adobe Photoshop, except for some of the later perijoves when G.E. experimented with an automatic assembly technique. There is some variation in format, especially for the early perijoves.  They cover as much as possible of the region >60°N, plus some lower-latitude areas (depending on how much time we had to assemble them). Most of them extend down to the equator or to 30°N at the edges.  In many cases a circle of 20°N latitude is included, or a larger extent of coordinates.

At the first few perijoves the longitude orientation was approximate (± 1-2°), as we deduced it from the apparent subsolar longitude before accurate navigation was established.  There are still small uncertainties in navigation so positions may be uncertain by a few pixels. Intensities and colour balance are arbitrary, and have been adjusted to reduce visible seams between images and to enhance regional contrast.  Therefore, any broad diffuse features should not be relied on without consulting the original single-image maps.

The maps are in TIF format in ZIP files which will be uploaded in successive Comments in this thread. Labelled versions can be found in the reports for each perijove posted by JHR on these JunoCam pages and the BAA Jupiter Section web site (https://britastro.org/sections/jupiter).

A companion set of maps of the South Polar Region (PJ1-PJ26, down to 60°S) was posted 1.5 years ago (https://www.missionjuno.swri.edu/junocam/think-tank?id=50) & (https://britastro.org/sections/jupiter).

The maps are provided under a CC-BY licence: "The CC BY licence allows anyone to: copy, distribute and transmit work; adapt work; make commercial use of the work under the condition that the user must attribute the work in the manner specified by the author or licensor (but not in any way that suggests they endorse the user or their use of the work)."  I.e. these maps are in the public domain but should always be credited (NASA / JPL / SwRI / MSSS / Gerald Eichstädt / John Rogers); and we ask that anyone wishing to use them for research or commercial purposes would contact us first.

--John Rogers.