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: 169 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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Guest_AlexBlackwell_* |
May 10 2007, 08:51 PM
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#91
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Guests |
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May 10 2007, 09:09 PM
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#92
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
hmm, a push-broom detector? Assuming each image is 1024 pixels wide, that would indicate top resolutions of:
Amalthea: 11 km/pixel Io: 27 km/pixel Europa: 36 km/pixel Ganymede: 44 km/pixel Callisto: 42 km/pixel -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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May 10 2007, 09:15 PM
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#93
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
JunoCam is a MARDI rip off isn't it? 1600 x 1200 RGB framing camera.
Doug |
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Guest_AlexBlackwell_* |
May 10 2007, 09:50 PM
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#94
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Guests |
I believe JunoCam FOV is 6° × 0.05°. CORRECTION: From Steve Matousek's paper ("The Juno NewFrontiers mission") currently in press with Acta Astronautica:
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May 11 2007, 01:49 AM
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#95
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Member Group: Members Posts: 706 Joined: 22-April 05 Member No.: 351 |
What would be the resolution of JunoCAM at closest approach to Jupiter (ignoring smear)? Closest approach would be ~70,000 km. I believe that the Jupiter resolution quoted above is for the polar regions when Juno is still a fair distance away.
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Guest_AlexBlackwell_* |
Sep 13 2007, 06:46 PM
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#96
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Note that the Juno website was recently updated.
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Sep 14 2007, 12:03 AM
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#97
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Little bit bummed that there isn't a radio DF experiment of some sort planned. Those three active source areas on the "surface" are still very mysterious; would like to at least set limits on their physical size.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Oct 3 2007, 09:51 PM
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#98
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Member Group: Members Posts: 213 Joined: 21-January 07 From: Wigan, England Member No.: 1638 |
-------------------- "I got a call from NASA Headquarters wanting a color picture of Venus. I said, “What color would you like it?” - Laurance R. Doyle, former JPL image processing guy
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Oct 4 2007, 10:38 PM
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#99
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Junior Member Group: Members Posts: 98 Joined: 29-July 05 From: Amsterdam, NL Member No.: 448 |
NASA awards Atlas V contract for Juno: I was going to say something about this being "An excellent choice" since NASA and Lockheed Martin have had such brilliant success with the Atlas V in the past. New Horizons and MRO launches were nearly flawless. But apparently Atlas V had its first hick-up last June with an NRO Reconnaissance Satellite. Too much of the important information is classified, however, and the launch has been deemed a "partial success". Nonetheless, I'm still willing to give [knock on wood] the Atlas V team the benefit of the doubt. http://www.spaceref.com/news/viewnews.html?id=1222 |
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Oct 5 2007, 10:39 AM
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#100
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Member Group: Members Posts: 599 Joined: 26-August 05 Member No.: 476 |
Nonetheless, I'm still willing to give [knock on wood] the Atlas V team the benefit of the doubt. http://www.spaceref.com/news/viewnews.html?id=1222 What would you rather use as a launcher? For the injection energy to get Juno into its initial transfer trajectory to Jupiter requires a large booster. The other choices in 2011 will still be Delta-IVH (more expensive), Proton (not a US launcher for a US spacecraft and a rather more serious failure last month), and Ariane 5 (not a US launcher). None have expected mission success rates significantly higher than Atlas V. Unfortunately, with the market realities of low launch rates and high launch costs today and in the near future, the choices are rather limited. Falcon 9 looks promising as a lower cost choice, but it needs several successful flights to establish its reliability. And that is an old article you cite that came out just after the launch with the usual tough sounding public sound bites expected at those times. Here is a more recent one with more balanced reporting: http://spaceflightnow.com/news/n0708/16rl10valve/ |
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Oct 11 2007, 01:51 PM
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#101
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Junior Member Group: Members Posts: 98 Joined: 29-July 05 From: Amsterdam, NL Member No.: 448 |
What would you rather use as a launcher? No, I agree that the Atlas V is the best option. The trajectories achieved for NH and MRO were excellent, saving valuable fuel for future scientific efforts. I also don't think that Juno is necessarily "settling" with the Atlas V choice. I was only saddened to just find out that the rocket had its first problem--I'm still catching up on lots of old news that I missed while on two months of summer fieldwork. Anyway, Atlas V is back on track with another successful launch. http://www.space.com/missionlaunches/sfn-0...-countdown.html |
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Guest_Geographer_* |
Nov 9 2007, 05:41 PM
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#102
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QUOTE What would you rather use as a launcher? The Ariane 5? It's launched closer to the equator so can take advantage of more centrifugal forces than a California launch. |
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Nov 9 2007, 06:02 PM
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#103
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
And in the real world with real money and real national interests (that rightfully keep the $190m spend on the Juno LV within the US) ?
Doug |
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Nov 11 2007, 11:17 AM
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#104
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Junior Member Group: Members Posts: 98 Joined: 29-July 05 From: Amsterdam, NL Member No.: 448 |
The Juno team has added a couple of new videos to their site. They aren't anything too high-tech, but they give a visual description of the mission.
http://juno.wisc.edu/index_whatsnew.html |
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Nov 11 2007, 01:21 PM
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#105
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Merciless Robot Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
BTW, and this is all public information, of course, the launch problem previously mentioned was with the Centaur upper stage, which cut off a few seconds too early. Problem traced to a new fuel valve design; they went back to the old one for the WGS-1 launch, which went flawlessly.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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