Pluto Surface Observations 2: NH Post-Encounter Phase, 10 Oct 2015- 1 Feb 2016 |
Pluto Surface Observations 2: NH Post-Encounter Phase, 10 Oct 2015- 1 Feb 2016 |
Oct 17 2015, 01:17 AM
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#16
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
I assume the blank/noisy LORRI image releases from 11:22:02 to 11:22:36 are part of the high-res strip. Are they a portion taken beyond Pluto's limb, or is something else going on? Yes, they shows dark space (with some luck few RAWs could show atmosphere). There are still at least 7 images missing in the sequence (P_MPAN_1) which contains Pluto's surface (11:22:38 - 11:22:50). -------------------- |
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Oct 17 2015, 03:39 AM
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#17
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Member Group: Members Posts: 146 Joined: 22-November 14 From: Bormida (SV) - Italy Member No.: 7348 |
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Oct 17 2015, 11:21 AM
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#18
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Junior Member Group: Members Posts: 75 Joined: 8-July 15 Member No.: 7566 |
What was the resolution on the latest high res strip?
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Oct 17 2015, 11:45 AM
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#19
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Member Group: Members Posts: 684 Joined: 24-July 15 Member No.: 7619 |
I can understand regularly spaced pits and rows of pits, but how in the world can there be pits occurring in pairs? [attachment=38221:pairs.jpg] I suspect those are actually dunes, with dark material on the sunlit side, and bright frost on the shady side. Shading does weird things to human vision- Take a look at the dune fields around Saudi Arabia / Kuait 22.4119038,50.4721622 What do you think you see? Mesas and buttes in a field of saw-toothed ridges, or areas of open rock in a field of dunes? |
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Oct 17 2015, 12:10 PM
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#20
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Pits are much more plausible explanation.
On majority of mountains and craters dark material is almost always on the shady side. It's unlikely that this would be different for plains. It's also very difficult to explains existence of dunes on the body with such low atmospheric pressure. We will see pretty soon what's correct as we can expect high resolution stereo data for those regions. What was the resolution on the latest high res strip? ~120 meters per pixel. -------------------- |
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Oct 17 2015, 02:49 PM
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#21
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Member Group: Members Posts: 716 Joined: 3-January 08 Member No.: 3995 |
I suspect the size, form, orientation, and clustering of the pits have to do with the structure, fabric, and/or composition (two or more types of more-or-less immiscible ices?) of the Sputnik material itself.
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Oct 17 2015, 04:47 PM
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#22
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Junior Member Group: Members Posts: 75 Joined: 8-July 15 Member No.: 7566 |
Are these the highest resolution images of Pluto we're going to get then?
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Oct 17 2015, 04:55 PM
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#23
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Newbie Group: Members Posts: 9 Joined: 25-September 15 Member No.: 7790 |
Nope, we should get two strips which are about 70-80m per pixel, one from just before closest approach and one from just after.
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Oct 17 2015, 05:10 PM
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#24
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Member Group: Members Posts: 716 Joined: 3-January 08 Member No.: 3995 |
Do we know (or can we estimate) the area of coverage of the 70-80/pixel strips?
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Oct 17 2015, 05:32 PM
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#25
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Oct 17 2015, 05:48 PM
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#26
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Member Group: Members Posts: 716 Joined: 3-January 08 Member No.: 3995 |
Here was the predict for the pre-C/A strip [attachment....] Thanks. I've seen that before but was unable to relocate it. I was hoping they captured some of the terrain to the east of the recently released strip. The interaction of smooth and rough terrain here is beyond intriguing. |
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Oct 17 2015, 06:15 PM
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#27
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Member Group: Members Posts: 716 Joined: 3-January 08 Member No.: 3995 |
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Oct 17 2015, 09:14 PM
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#28
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Member Group: Members Posts: 214 Joined: 30-December 05 Member No.: 628 |
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Oct 17 2015, 09:54 PM
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#29
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
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Oct 18 2015, 12:18 PM
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#30
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
It did. Not uncertainty in the pointing, exactly - but uncertainty in the location of Pluto along the track of the spacecraft. Yeah, uncertainty was quite large. Better be safe than sorry. -------------------- |
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