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Rosetta - Early Orbital Operations at Comet 67P C-G, August 6, 2014 - November 13, 2014
The Singing Badg...
post Aug 6 2014, 04:53 PM
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QUOTE (mcgyver @ Aug 6 2014, 02:03 PM) *
How to figure out scale in these wonderful images?


Here's a cool size comparison with London from the BBC:

http://news.bbcimg.co.uk/media/images/7675...a_comet_624.jpg
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bobik
post Aug 6 2014, 05:08 PM
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QUOTE (DFinfrock @ Aug 6 2014, 04:38 PM) *
... But if they can safely land in one of those green spots closer to the neck of the comet, just imagine the spectacular view - not only of the local surface, but of the other half of the comet looming overhead.

The cameras of Philae are pointed at the ground, thus - if all goes well - we would not be able to see the grandiose scenery overhead.
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Explorer1
post Aug 6 2014, 05:30 PM
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QUOTE (bobik @ Aug 6 2014, 09:08 AM) *
The cameras of Philae are pointed at the ground, thus - if all goes well - we would not be able to see the grandiose scenery overhead.


Some are pointed at the ground, but others are horizontal, Huygens style.
See https://www.youtube.com/watch?v=k1IFU6kxcD8
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charborob
post Aug 6 2014, 05:43 PM
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QUOTE (Explorer1 @ Aug 6 2014, 12:30 PM) *
Some are pointed at the ground, but others are horizontal, Huygens style.
See https://www.youtube.com/watch?v=k1IFU6kxcD8

Description of Çiva (Comet nucleus Infrared and Visible Analyzer) here.
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ollopa
post Aug 6 2014, 06:05 PM
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I can't agree with the BBC graphic. The base unit is 4x2 km, while their graphic conflates the head into the scene. I am at Frankfurt Airport, so can't cut and paste. But Hal Weaver's Slide 51 refers. I have been at every Voyager encounter and more besides. This rocks!
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Adam Hurcewicz
post Aug 6 2014, 06:14 PM
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QUOTE (machi @ Aug 6 2014, 06:08 PM) *
And here is cross-eye version of the same stereo image:


This is fantastic 3D picture! Great work! I love it.


--------------------
Adam Hurcewicz from Poland
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testguru
post Aug 6 2014, 06:15 PM
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I have not seen much discussion on the probability that a stray particle emitted from the Comet could damage either the orbiter or lander.
Are there any papers or information on this possibility? As the Comet continues to increase activity as it approaches perihelion I would think the probability of this happening will go up.
I assume they will try to avoid the areas on the Comet with active venting for both the Orbiter and Lander although the Orbiter probably can't stay away from the active areas all the time,
and the active areas should evolve with time as we approach perihelion.
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machi
post Aug 6 2014, 07:21 PM
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QUOTE (jasedm @ Aug 5 2014, 08:46 PM) *
Brilliant Machi, and very useful - thanks!


QUOTE (Adam Hurcewicz @ Aug 6 2014, 08:14 PM) *
This is fantastic 3D picture! Great work! I love it.


You're welcome!


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marsbug
post Aug 6 2014, 07:33 PM
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QUOTE (centsworth_II @ Aug 6 2014, 03:07 PM) *
Maybe the neck jets represent the sublimation of superficial ice that collected in cold sinks at the end of the comet's last pass rather than indicating a deep structure of ice in the neck.


Do the zones of most emission roughly coincide with those that receive the least sunlight?


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algorithm
post Aug 6 2014, 08:10 PM
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Is it just me?!! laugh.gif



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Phil Stooke
post Aug 6 2014, 08:54 PM
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Well... yes, I think it probably is!

Phil


--------------------
... because the Solar System ain't gonna map itself.
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machi
post Aug 6 2014, 09:01 PM
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I see something completely different smile.gif
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Mercure
post Aug 6 2014, 09:12 PM
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QUOTE (machi @ Aug 6 2014, 06:08 PM) *
And here is cross-eye version of the same stereo image:


Sublime cross-eye, thank you machi! Is this the most topographically bizarre heavenly body yet viewed in close-up?
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algorithm
post Aug 6 2014, 09:12 PM
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QUOTE (Phil Stooke @ Aug 6 2014, 09:54 PM) *
Well... yes, I think it probably is!

Phil



Phew!! laugh.gif laugh.gif
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algorithm
post Aug 6 2014, 09:44 PM
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QUOTE (machi @ Aug 6 2014, 10:01 PM) *
I see something completely different smile.gif


I think Mr Giger would prefer more protruberences, although the lobe would appeal. smile.gif
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