Juno development, launch, and cruise, Including Earth flyby imaging Oct 9 2013 Options

[PhilHorzempa]

I thought that it was time to start a new thread devoted to the JUNO Jupiter
Orbiter mission. This New Frontiers Mission #2 seems to be a "stealth" project
with little information available on the Web. In fact, the official NASA JUNO
web site is quite pitiful. It contains the minimal amount of information on what
seems to be an intriguing mission, in terms of both science and engineering.

Does the UMSF community have information on this mission that has not
been widely seen before?

Another Phil

[Phil Stooke]

Ed, the Mariner 5 dual-frequency occultation experiment
involved one UHF and one VHF signal (can't remember their frequencies); and
the "phase" (ie. Doppler shift) of the signals was indeed measured along
with their signal strength. In fact this experiment was carried largely
because its phase-detection capability made it lots more sensitive to
electron layers in Venus' ionosphere than the S-band occultation was. (I
think I mentioned before that there was a feud over whether to carry this
experiment at all on that hastily jury-rigged planetary mission. JPL
recommended a copy of the Mariner 4 TV camera, with one visible and one UV
filter, instead; but NASA HQ overrode them. Decades later, I'm still seeing
fights over the decision in science papers.)