Dawn's first orbit, including RC3, March 6, 2015- June 15, 2015 |
Dawn's first orbit, including RC3, March 6, 2015- June 15, 2015 |
Mar 12 2015, 10:08 AM
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#16
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Member Group: Members Posts: 241 Joined: 22-August 05 From: Stockholm Sweden Member No.: 468 |
I like these perspective jolting moments. My absolute favorite is earth and the moon seen from mercury during the lunar eclipse.
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Apr 15 2015, 11:12 AM
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#17
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Member Group: Members Posts: 423 Joined: 13-November 14 From: Norway Member No.: 7310 |
Dawn is currently communicating with Earth. Here's hoping for some of spot(s) 5.
http://eyes.nasa.gov/dsn/dsn.html -------------------- |
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Apr 16 2015, 04:53 AM
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#18
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
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Apr 16 2015, 07:09 PM
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#19
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
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Apr 16 2015, 07:11 PM
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#20
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
JPL has released an animation of the April 10 opnavs. Very cool
On Twitter, Brian Wolven asked me if the prominent bright peaks seen at the right-hand limb at the beginning of the animation were the two bright spots. I tried to figure out the answer to that, but couldn't. I made the attached polar projection of the northern hemisphere of the DEM from JohnVV's map, but I couldn't match crater features. -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Apr 16 2015, 07:31 PM
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#21
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
it would NOT be visible YET in the April 10 images
it is at 20 deg North what is visible in that gif is 50+ to 90 north as you can see in these two screenshots ( if the naif kernels are accurate, i have been having MAJOR issues with some of them ) added extra light to the scene -- FOR APRIL 10 like the gif-- near the center - off to the right side of ceres |
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Apr 16 2015, 07:36 PM
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#22
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Member Group: Members Posts: 423 Joined: 13-November 14 From: Norway Member No.: 7310 |
Pleasantly surprised to see that OpNav 6 was released today. Something odd happens when I try to extract the individual frames with IrfanView, though: the frames come out in all sorts of sizes. (edit: never mind, Python to the rescue)
In the latest Dawn Journal, it was mentioned that spot(s) 5 would not be visible in OpNav 6: QUOTE As we describe below, Dawn’s extensive photographic coverage of the sunlit terrain in early May will include these bright spots. They will not be in view, however, when Dawn spies the thin crescent of Ceres in its next optical navigation session, scheduled for April 10 so I think it would be odd if they suddenly turned up anyway. -------------------- |
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Apr 16 2015, 07:37 PM
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#23
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
it would NOT be visible YET Thanks for those simulations, they are really helpful. -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Apr 16 2015, 08:12 PM
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#24
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
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Apr 16 2015, 09:18 PM
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#25
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Member Group: Members Posts: 716 Joined: 3-January 08 Member No.: 3995 |
I think this mound (or mounds) in the large crater is a good candidate for the limb peaks:
Note the trio of craters circled in red: They seem to correspond with the craters in red here: Now extend a longitudinal line over the north pole here: And here (north pole marked with 'N'): The peaks are to the east of the line. The crater with the mound(s) is marked with a yellow box on the longitudinal map. |
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Apr 17 2015, 04:14 AM
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#26
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
With the following assumed globes for PIA19317.gif OpNav6
I've obtained these projections: Addition of the projections to the DLR map from RC2: The bright spot is probably just outside frame 20 of the sequence. |
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Apr 17 2015, 05:56 AM
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#27
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
aligning the animated gif with the textured mesh and lat long marks
the other "bright spot" is at 42 N and 0 long. it is barely visible in the gif 3 frames from the gif with and without a spherical grid the 0/360 long is top right on the sphere and you can see the major bright spot hidden under the horizon almost visible on the top left |
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Apr 17 2015, 08:20 AM
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#28
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Member Group: Members Posts: 648 Joined: 9-May 05 From: Subotica Member No.: 384 |
Ceres rotating back and forth in latest images from Dawn spacecraft.
I find it much easier to spot different surface details this way. -------------------- The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.
Jules H. Poincare My "Astrophotos" gallery on flickr... |
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Apr 17 2015, 10:44 AM
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#29
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
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Apr 17 2015, 05:26 PM
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#30
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Member Group: Members Posts: 107 Joined: 1-August 14 Member No.: 7227 |
Ceres rotating back and forth in latest images from Dawn spacecraft. I find it much easier to spot different surface details this way. I can't figure out if bright spot is visible in the animation. I place here the other available images for more comfortable comparisons: http://cdn.phys.org/newman/csz/news/800/20...warfplanetc.jpg http://cdn.phys.org/newman/csz/news/800/20...hisimageist.jpg https://lightsinthedark.files.wordpress.com...3/pia189231.jpg http://www.jpl.nasa.gov/spaceimages/images...19056_hires.jpg I don't understand if I must link them or upload them or insert them in tag so I just add the links. |
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