Voting
Welcome!
Juno is in a 53-day orbit. When it passes close to Jupiter (“PeriJove”
or “PJ”) we will take as many pictures as we can. The number of pictures that we take is
limited by the amount of onboard data storage that we have for JunoCam, so we
have to be selective. The images are
collected as we go from the north pole of Jupiter to the south pole, which
happens in a brief 2 hour portion of the orbit.
On any given perijove pass we will only be able to image targets in a
narrow swath of territory the spacecraft flies over (“groundtrack”).
Juno’s orbit geometry is evolving so we will carry out campaigns rather than voting on specific targets. Campaigns are focused on a specific science theme and take advantage of the changes in lighting.
Juno’s orbit geometry is evolving so we will carry out campaigns rather than voting on specific targets. Campaigns are focused on a specific science theme and take advantage of the changes in lighting.
What happened to Voting?
Up through PJ8 everyone could vote on their favorite Point
of Interest (POI) and those rounds can be viewed here. Changes in the orbit and mission plan mean
that we are no longer selecting targets by vote.
There will still be a voting page for every orbit and we will describe the specifics of each perijove pass such as the spacecraft orientation. Because of the challenges to predict the Points of Interest that will be in the JunoCam field of view we are now timing the image collection by latitude and/or executing campaigns.
There will still be a voting page for every orbit and we will describe the specifics of each perijove pass such as the spacecraft orientation. Because of the challenges to predict the Points of Interest that will be in the JunoCam field of view we are now timing the image collection by latitude and/or executing campaigns.
Target Selection
We will take polar images on every PJ pass to assemble
timelapse sequences to study the dynamics of the circumpolar cyclones. Between the north and south pole images will
be timed to get complete latitudinal coverage.
The rest of the resources will be used for campaigns. Options are to look for lightning, take multiple methane images to study high altitude hazes, study Jupiter’s ring, take stereo pairs for cloud altitudes, image Galilean moons when available, etc. We will keep the Voting Round discussion for comments on what would be best. We are hoping that you enjoy being a part of this process, that you enjoy being a member of the JunoCam team.
The rest of the resources will be used for campaigns. Options are to look for lightning, take multiple methane images to study high altitude hazes, study Jupiter’s ring, take stereo pairs for cloud altitudes, image Galilean moons when available, etc. We will keep the Voting Round discussion for comments on what would be best. We are hoping that you enjoy being a part of this process, that you enjoy being a member of the JunoCam team.
Voting Round :
PJ24 Encounter
CLOSED : 2019-12-26 00:00:00
Perijove on : 2019-12-26 17:35 UT
Juno will fly by Ganymede inbound to Jupiter at a range of ~100,000 km. We will take 4 images, spaced to cover different terrain. After that Juno has a more distant Io encounter and we will take two images to look for volcanic plumes that may show up as bright spots just beyond the terminator (similar to PJ17). After those images we start the Jupiter sequence.
The entire pass takes place while Jupiter is behind the sun, known as solar conjunction. This means that radio signals get corrupted by the sun so we do not attempt to transmit data. The images will be downlinked to earth when the angle between Jupiter and the sun is >2 deg and we can get a clean signal, about a week after perijove.
The entire pass takes place while Jupiter is behind the sun, known as solar conjunction. This means that radio signals get corrupted by the sun so we do not attempt to transmit data. The images will be downlinked to earth when the angle between Jupiter and the sun is >2 deg and we can get a clean signal, about a week after perijove.
The perijove pass begins with lightning search images as Juno approaches the night side of Jupiter. North polar coverage begins at -40 min from perijove. The latitude of perijove continues to move north, now up to ~26N, so the northern latitudinal coverage is compressed. In contrast the south polar crossing does not occur until +2 hr so a lengthy southern timelapse sequence is planned.
Round Discussion
General discussion about this round.
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