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Notes about cylindrical maps and perijove passes

We create cylindrical maps from the telescopic images supplied by our amateur astronomers, and we update them every 2 weeks. Jupiter has a dynamic atmosphere where winds in the belts (brown) and zones (white) go in opposite directions. Storms develop and evolve, and other atmospheric features come and go. With each new map, we move all of the POI markers — sometimes POIs disappear, sometimes they get torn apart.

In its 53 day orbit, Juno spends most of the time distant from Jupiter. The spacecraft swoops from the north to the south pole in just 2 hours, which we call a "perijove pass". That means that the images JunoCam can take are restricted to a swath of longitude – we will not be able to select from all the points of interest every orbit. On the Voting page we will say which POI's are likely to be within our field of view on a given perijove pass and you will participate in the selection of which POI's to image.

We will have a conversation on every perijove pass about which POIs to image, and the debate will be based on the threads of discussion associated with those POIs. 

General Comments

If you'd like to share commentary on Jupiter's atmosphere that is not related to a specific Point of Interest, please contribute below.

260 Comments

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  1. comment by Matsumototaku-74 on 2018-01-12 23:39 UT

    Hi, can someone help me out please. I'm looking to download the RAW images like it says on the site but when I download the files are just crappy 1mb PNG's????? Anyone help? Thanks.

  2. comment by Cecconi-17 on 2018-01-12 22:53 UT

    Is it possible to get a video of a moon of Jupiter eclipsing the sun?

  3. comment by Heimdal-69 on 2018-01-09 22:59 UT

    I want to see a realtime video (not a stitched together time lapse). What would it look to watch a flyby live as a passenger?

  4. comment by NGC2021 on 2017-12-22 11:20 UT

    Hello! Love this stuff!

    ... I love stereo imagery and I've been wanting to see some hyperstereo (large interocular distance) pairs from Jupiter. I want to see some cloud depth!

    Does anyone know if there has been a series of images taken pointing at the same basic spot (POI) over a relatively short period of time? - I don't know what the distance needed between images would be (maybe between 1/100 and 1/200 of the distance to the "cloud surface").

    And, if there have not been pictures taken like this, can they be added to the plan/schedule? (Please! :) )

    I can process and arrange/place the images myself, but I need stereo pair sources.

    Thanks for any info...

    • comment by NGC2021 on 2017-12-22 11:30 UT

      It would probably be best to take a series of 3 or 4 images at relatively even intervals so we could try different pairings for different interocular distances.

      Also, does anybody know what kind of height/depth variation there is in the "surface clouds"?

    • comment by Philosophia-47 on 2017-12-26 17:14 UT

      The JunoCam images have not enabled really convincing stereo imaging. Because of the way the camera scans the surface, it does not take images less than 2 minutes apart, in which time the spacecraft moves almost 6000 km (near closest approach which has altitude near 4000 km), so the same region is viewed from quite different angles. The maximum vertical range of the visible clouds is tens of km, but many of them are diffuse on this scale. The most promising features for stereo imaging are the tiny white shadow-casting clouds which appear widespread over many regions in images from PJ6 onwards, and are around 10-50 km across. We have tried to see parallax in some map-projected images of these but the results were not really convincing. If you want to try, the best pairs of images would be among those of the north or south temperate regions taken from PJ6 onwards. (At higher latitudes, the spacecraft is higher and moving slower, so the angles between successive pictures are smaller, but the distance is then too great to resolve likely parallax.) --John.