Report on PJ57 Jupiter imges: I've tried to upload a ZIP file with the full-size figures and the animation, but get the message "Error: Mime Mismatch". Will try again later....
Here is a report on the PJ57 images of Jupiter. (It will come in two PDFs and a ZIP file, in subsequent Comments.) JunoCam produced an excellent series of images covering the whole planet inbound and the north polar region at high resolution. A section of the NEB containing a series of large interesting circulations has now been well imaged at PJ55, PJ56, and PJ57. These images also showed the site of an impact flash detected from Earth only 12 hours earlier, in the latitude of the whitened northern NTB. It showed nothing unusual there, but this was a very valuable observation, as it was the soonest spacecraft imagery for any of the impact sites since the Comet Crash in 1994.
This report will also appear on the BAA Jupiter Section web site as usual, and it is complemented by our ground-based 2023 Report no.4, which is also posted on that web site at:
The PJ57 images of Io are superb! Here is a report on them.
The JunoCam team have managed to cure the 'streaky noise' problem that developed at PJ56, at least for now. The Io images are the first closeup views of the volcanic moon for 22 years. Moreover, most of the “dark side” was well illuminated by light reflected from the planet. So JunoCam completed the mapping of Io’s hitherto-unknown north polar region. Notably, it obtained the first good images of several impressive high mountains that had never been properly resolved before, and also of several northerly calderas that are volcanic hot spots. (No volcanic plumes were visible in the images.)
The report includes a global map from the PJ57 images by Jason Perry, which shows the relationships of mountains and volcanoes much better than the Voyager or Galileo maps. No large changes are seen since the Voyager and Galileo mapping. (Colour and brightness of surfaces on Io can vary greatly with the lighting and viewing angles, and with the camera filters used, so many apparent differences are likely due to these factors.) However, local changes are seen around some of the volcanic hot spots, including Chors, Tonatiuh, and Loki; details of these are given in the report.
6 Comments
Report on PJ57 Jupiter images: Here is the ZIP file with the full-size figures.
Report on PJ57 Jupiter imges: I've tried to upload a ZIP file with the full-size figures and the animation, but get the message "Error: Mime Mismatch". Will try again later....
Report on PJ57 Jupiter imges: Here is a PDF with small copies of the figures.
Here is a report on the PJ57 images of Jupiter. (It will come in two PDFs and a ZIP file, in subsequent Comments.) JunoCam produced an excellent series of images covering the whole planet inbound and the north polar region at high resolution. A section of the NEB containing a series of large interesting circulations has now been well imaged at PJ55, PJ56, and PJ57. These images also showed the site of an impact flash detected from Earth only 12 hours earlier, in the latitude of the whitened northern NTB. It showed nothing unusual there, but this was a very valuable observation, as it was the soonest spacecraft imagery for any of the impact sites since the Comet Crash in 1994.
This report will also appear on the BAA Jupiter Section web site as usual, and it is complemented by our ground-based 2023 Report no.4, which is also posted on that web site at:
https://britastro.org/section_information_/jupiter-section-overview/jupiter-in-2023-24
--John Rogers.
Here are the full-size figures to accompany my report on the PJ57 images of Io.
--John Rogers
The PJ57 images of Io are superb! Here is a report on them.
The JunoCam team have managed to cure the 'streaky noise' problem that developed at PJ56, at least for now. The Io images are the first closeup views of the volcanic moon for 22 years. Moreover, most of the “dark side” was well illuminated by light reflected from the planet. So JunoCam completed the mapping of Io’s hitherto-unknown north polar region. Notably, it obtained the first good images of several impressive high mountains that had never been properly resolved before, and also of several northerly calderas that are volcanic hot spots. (No volcanic plumes were visible in the images.)
The report includes a global map from the PJ57 images by Jason Perry, which shows the relationships of mountains and volcanoes much better than the Voyager or Galileo maps. No large changes are seen since the Voyager and Galileo mapping. (Colour and brightness of surfaces on Io can vary greatly with the lighting and viewing angles, and with the camera filters used, so many apparent differences are likely due to these factors.) However, local changes are seen around some of the volcanic hot spots, including Chors, Tonatiuh, and Loki; details of these are given in the report.
--John Rogers