QUOTE (NMRguy @ Jun 20 2021, 06:40 PM)
One question for the group--does anyone know how much coverage the Juno Stellar Reference Unit navigation camera collected on the dark side of Ganymede?...
As far as I can tell, there have been no releases of Stellar Reference Unit data to the PDS. However, I think future SRU data will be archived based on wording in "Juno Extended Mission" section of
"Report of the 2020 NASA Planetary Missions Senior Review" :
"The panel recommends that NASA work with the Juno team to support the archiving of SRU data from the prime mission. Consideration should also be given to delivering data to PDS from Juno's Radiation Monitoring investigation,"
Further, from
"NASA Response to the 2020 Planetary Mission Senior Review":
- The Juno mission will archive EM data from several engineering experiments which have proven useful scientifically during the PM.
- Additionally, the Juno mission has been asked to provide a supplementary proposal to PSD to archive engineering experiment data acquired during the PM that were not originally archived.
Some SRU CCD information from
“The Juno Radiation Monitoring (RM) Investigation” H.N. Becker et al. (paywalled) section 2.3 "SRU CCD Focal Plane Array":
512x512 resolution
0.0325 degrees per pixel (similar to JunoCam)
17-micron pixel pitch, and 200,000 electron full well
2.7-ms integration dwell time between shifts
f( R )= a0 + a1 R + a2 R^2 + a3 R^4
a0 = 0.999432579, a1 = −0.0295412410, a2 = 0.2733020107, and a3 = −1.9368112951
time needed for full image transfer to the spacecraft, ∼ 15 minutes
In addition to the SRUs, the Advanced Stellar Compass (ASC) cameras (2 pair) are part of Magnetic Field Investigation. The Radiation Monitoring paper discusses aspects of the ASC relevant to radiation monitoring, but not imaging. The NASA Senior Review report didn't mention archiving ASC images.
Also, this post has SRU images I produced from spreadsheets in a Nature paper:
http://www.unmannedspaceflight.com/index.p...st&p=247827