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 :
PJ16 Encounter
CLOSED : 2018-10-29 00:00:00
Perijove on : 2018-10-29 21:07 UT
For PJ16 the spacecraft will be oriented such that the camera field of view is pointed towards the groundtrack - the swath of the cloudtops the spacecraft is flying over - rather than oriented with the high gain antenna pointed at earth (the more typical attitude, designed to optimize the gravity interior structure experiment). This means that the images will contain more Jupiter, less sky, and the illumination will be better.
PJ16 also occurs when the earth is close to being behind the sun as seen from Juno. Downlink of data to the earth is always minimal at these times because the proximity to the sun means we must reduce the data rate to earth or the link will be noisy.
For these two reasons we are focusing our limited data volume on the perijove pass and we will not be taking pictures on approach or departure.
As we approach the north pole from the night side of Jupiter we will take a series of images with varying amounts of time-delayed-integration, to see what is the best choice between seeing into the shadows at the north pole, and avoiding saturation of more southerly latitudes. This pass we hope to see where circumpolar cyclone #7 has moved, and interestingly whether some other atmospheric feature has pushed it there.
The series of northern hemisphere images will include a nice image of White Spot Z. The spacecraft reaches perijove at a latitude of ~19 deg North as the orbit continues to evolve.
We look forward to seeing more mesoscale waves near the equator. In the southern hemisphere we expect to get a good look at Oval BA.
As the spacecraft departs we will collect a 40 min timelapse sequence of the south pole.
PJ16 also occurs when the earth is close to being behind the sun as seen from Juno. Downlink of data to the earth is always minimal at these times because the proximity to the sun means we must reduce the data rate to earth or the link will be noisy.
For these two reasons we are focusing our limited data volume on the perijove pass and we will not be taking pictures on approach or departure.
As we approach the north pole from the night side of Jupiter we will take a series of images with varying amounts of time-delayed-integration, to see what is the best choice between seeing into the shadows at the north pole, and avoiding saturation of more southerly latitudes. This pass we hope to see where circumpolar cyclone #7 has moved, and interestingly whether some other atmospheric feature has pushed it there.
The series of northern hemisphere images will include a nice image of White Spot Z. The spacecraft reaches perijove at a latitude of ~19 deg North as the orbit continues to evolve.
We look forward to seeing more mesoscale waves near the equator. In the southern hemisphere we expect to get a good look at Oval BA.
As the spacecraft departs we will collect a 40 min timelapse sequence of the south pole.
Round Discussion
General discussion about this round.
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