NH at Jupiter, Planning the Jupiter encounter |
NH at Jupiter, Planning the Jupiter encounter |
Jan 22 2006, 10:57 PM
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Member Group: Members Posts: 706 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
I think the Jupiter encounter deserves its own thread.
I've just been taking a first look at the Jupiter encounter geometry. You can do the same using Mark Showalter's excellent on-line ephemeris tools at the PDS rings node, which by good fortune happens to include a New Horizons ephemeris (calculated over a year ago) for our actual launch date, January 19th. We'll have an updated ephemeris soon, but this one's already good enough for planning. As Roby72 noted in the Star 48 thread, the satellites are (annoyingly) all on the opposite side of Jupiter at closest approach. We'll still get good views of all sides of Io because Io rotates in only 1.8 days and we'll be pretty close to Jupiter for that long. We'll get fairly good coverage on Europa too, for the same reason. But we won't get very close to Ganymede or Callisto. Luckily Io is our highest priority satellite target and Europa is next, so we'll do OK. |
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Feb 15 2006, 04:32 AM
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Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
Two Ganymede encounters.
1st is Ganymede passing in front of Jupiter. Timestep is 15 minutes. I have selected a KODAK_MMT (if you can only get one...) John, I hope your workaround for the bright parts of the moons will work on a crescent Jupiter! 2nd is Ganymede grazing the north side of Jupiter, lit up in Jupiter-shine. My KODAK_MMT is exactly when Jupiter and Ganymede's axe (Is that plural for axis?) line up. Should be a pretty photo. Timestep is 20 minutes. The KODAK_MMTs are at full resolution, low filesize to give an idea of how they would fit as desktop background. -------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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Feb 15 2006, 04:50 AM
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Member Group: Members Posts: 706 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Two Ganymede encounters. 1st is Ganymede passing in front of Jupiter. Timestep is 15 minutes. I have selected a KODAK_MMT (if you can only get one...) John, I hope your workaround for the bright parts of the moons will work on a crescent Jupiter! 2nd is Ganymede grazing the north side of Jupiter, lit up in Jupiter-shine. My KODAK_MMT is exactly when Jupiter and Ganymede's axe (Is that plural for axis?) line up. Should be a pretty photo. Timestep is 20 minutes. The KODAK_MMTs are at full resolution, low filesize to give an idea of how they would fit as desktop background. Those are awesome! I'll show the movies at the next team meeting, and I hope we can actually take one or two of them (or at least, some well-timed stills). Thanks much, John. |
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