Juno development, launch, and cruise, Including Earth flyby imaging Oct 9 2013 |
Juno development, launch, and cruise, Including Earth flyby imaging Oct 9 2013 |
Apr 3 2006, 09:57 PM
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#1
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Member Group: Members Posts: 172 Joined: 17-March 06 Member No.: 709 |
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 |
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Nov 26 2008, 06:39 PM
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#2
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Is there any possibility of JunoCam (image of instruments on spacecraft here) getting images of the Galilean satellites of any decent resolution?
Or would that be a bad thing due to the solar panel requirements? -Mike [EDIT: Already discussed earlier in this thread (multiple times, best response here).] -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Nov 28 2008, 04:02 PM
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#3
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Junior Member Group: Members Posts: 57 Joined: 21-September 06 Member No.: 1172 |
Is there any possibility of JunoCam getting images of the Galilean satellites of any decent resolution? Or would that be a bad thing due to the solar panel requirements? -Mike [EDIT: Already discussed earlier in this thread (multiple times, best response here).] Fortunately, JRehling is mistaken. In fact, Juno's orbit won't be fixed, it will rotate slowly as shown on the picture. Baseline mission assumes 32 orbits in all. On 12-13th orbit Juno will intersect Jupiter's equatorial plane somewhere near the Callisto orbit, on 20-21th orbit close approach to Ganymede will be possible. In case of the extended mission even Europa can be explored (if only Juno can survive in the radiation belts). I don't know whether such a "flybys" ever planned, but approaches to Galileans will be certainly much more close than those calculated by JRehling |
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Nov 28 2008, 04:09 PM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
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Nov 28 2008, 04:15 PM
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#5
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Junior Member Group: Members Posts: 57 Joined: 21-September 06 Member No.: 1172 |
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Guest_Enceladus75_* |
Nov 29 2008, 06:16 PM
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#6
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Guests |
Yes, but if we have an opportunity for encounter why not make use of it? why not to synchronize orbits? My understanding was that Juno's main focus was on Jupiter itself and its interior. I thought that the JunoCam was a sort of afterthought, for public outreach and schoolkids, becuase the Juno probe will be spinning and the imaging would be pretty crude, not unlike the Pioneers in the mid 1970s. How can meaningful science be achieved by trying to image the moons? |
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Nov 29 2008, 06:42 PM
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#7
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
the Juno probe will be spinning and the imaging would be pretty crude... "Pretty crude"? I'm insulted. Despite the spacecraft spin. the Junocam images should be extremely good; comparable to or better than the best Galileo images of Jupiter. That said, we'd have to get pretty close to one of the satellites to get good images, because Junocam has a wide field of view. As for asteroid flybys: I can't speak for the rest of the payload but for any plausible flyby distance, asteroids would be barely resolved from points by Junocam. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Nov 29 2008, 07:38 PM
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#8
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Member Group: Members Posts: 715 Joined: 22-April 05 Member No.: 351 |
"Pretty crude"? I'm insulted. Despite the spacecraft spin. the Junocam images should be extremely good; comparable to or better than the best Galileo images of Jupiter. I believe that the best Galileo cloud deck images were in the 15-20km range partially because of the distance of most of Galileo's perijoves. When GLL did get in close, it tended to do pixel binning as a counter measure to radiation caused noise. JunoCam will may provide more images of the cloud deck and at higher resolution than the Galileo mission. If it can achieve 4km/pixel at perijove, I believe that would be the highest resolution of the cloud deck ever. I just wish there was a near infrared band -- would have added a lot of science. As for imaging satellites, the timing of Juno's orbits is selected to enable even spacing of Jovian longitudes for gravity mapping. Targeting a satellite for what would be fairly low resolution images (because JunoCam is a wide angle camera) would mess up a key goal of the Juno mission. -------------------- |
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