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Apollo Sites from LRO
Hungry4info
post Apr 16 2010, 08:23 PM
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With LRO being in a polar orbit, I don't see why not.


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nprev
post Apr 16 2010, 09:43 PM
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The timing would still be pretty finicky; not sure how frequently opportunities would occur. The Moon's orbit is inclined around 30 degrees to Earth's equator, but is it close to coplanar with the Ecliptic? The LRR's reflective surface is presumably normal to the Earth's sublunar point.


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Phil Stooke
post Apr 16 2010, 09:50 PM
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It may not be a good idea to look for that reflection. LOLA specifically avoids such reflections.

Phil


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ugordan
post Apr 16 2010, 10:09 PM
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They can (and do IIRC) turn LOLA off every time they pass over a site with retroreflectors.


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elakdawalla
post Apr 16 2010, 10:37 PM
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They'd better! LOLA would be fried if they lasered one of those. That's one incentive for locating the Lunokhods & other Russian hardware -- presumably they can now narrow the LOLA region of avoidance for those areas.


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Bill Harris
post Apr 16 2010, 11:31 PM
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I'm thinking it could be possible-- the LRO-LRR-Sun phase angle could get close enough to be within the "beamwidth" of the retroreflector. At best the Sun would need to be near to the Earth in the Lunar sky and that would be a few hours after the "new Earth" (or full Moon) at the 4deg longitude of A-15.

No idea how bright or long the flash would be. I'm presuming it would subtend 1/2 deg (width of the Sun) so it would be a quick flash, and the brightness would be an inverse-square function of the reflector area.

--Bill


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FordPrefect
post Apr 22 2010, 07:16 PM
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QUOTE (djellison @ Apr 15 2010, 11:57 AM) *
Making anaglyphs from stereo pairs - it's almost impossible to claim vertical accuracy in terms of exaggeration. We've had this discussion before with HiRISE or maybe CTX images. We're looking at a geometry when your eyeballs would be several km apart, 50 km above the lunar surface, and you can't back out of that to a more 'human' perspective without generating a DEM, and then re-rendering that as an Anaglyph.


Doug and others, is there any free software available which can calculate just a "simple" relative elevation model from the sources used for these anaglyphs? I suspect the answer is no, but you never know. It is just the tought of creating a highly detailed digital terrain model of the landing site areas. If the program was just able to put out a greyscale bumpmap in order to displace a plane in 3dsMax... dreaming away...
I once tried a demo version of LISA which came along on a CD in a book about Photogrametry from the local library. As it was a demo only, it did not allow to export anything, and I had not managed to get something reasonable out of it.

Thank you very much for any feedback about this. Greetings, Rafael
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djellison
post Apr 22 2010, 08:08 PM
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The way HiRISE DEM's are made, generally speak, is via BA's 'SOCET SET' software, which runs to about 5 figures in price.

Ames research centre are working on a free version that bolts into ISIS - http://ti.arc.nasa.gov/tech/asr/intelligent-robotics/ngt/
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Ian R
post Apr 23 2010, 11:33 AM
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Here's a 'locator' for the Apollo 15 site in that raw image:

Attached Image


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dshaffer
post Apr 23 2010, 12:10 PM
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Excellent - very helpful!
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dmg
post Apr 23 2010, 10:55 PM
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QUOTE (Bill Harris @ Apr 16 2010, 12:01 PM) *
I see that the location of the Apollo 15 LRR (Lunar Ranging Retroreflector) has been identified

http://wms.lroc.asu.edu/lroc_browse/view/M111578606LE


I'm very confused.

I have found the landing site in the M111578606LE raw image and it matches the one shown on the LROC site for Apollo 15



BUT..... how can these be of the Apollo 15 site next to the Hadley Rille and the Appennine Front (see:

)?

Any angle of the LROC strip would have caught parts of the Appennine mountains or the Rille. I just don't see how the M111578606LE can actually be of Apollo 15's landing site.

Any explanation?
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FordPrefect
post Apr 24 2010, 10:56 AM
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QUOTE (dmg @ Apr 23 2010, 11:55 PM) *
I'm very confused.
...
Any explanation?


The landing site in M111578606LE is at the very left edge of the image, just enough to cut out the Rille which would appear a tad more to the left. Also, if you look further south, you can see the slopes of the Apennine mountains (the bright material).
Also compare it with M111571816.

@Doug: Thanks for your feedback, I'll keep checking that link/website you posted above!
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Ian R
post Apr 30 2010, 08:10 PM
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Here's a couple of views of the Apollo 15 landing site, separated by nearly 40 years; top is a mosaic of stills from the film shot during the ascent into lunar orbit; below that is a recent view from LRO that Phil posted in another thread:

Attached Image


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Ian R
post Apr 30 2010, 09:42 PM
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Here's a version of the ascent mosaic that is more extended in the direction of the rille:

Attached Image


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JohnVV
post Apr 30 2010, 10:03 PM
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QUOTE
The way HiRISE DEM's are made, generally speak, is via BA's 'SOCET SET' software, which runs to about 5 figures in price.

Ames research centre are working on a free version that bolts into ISIS - http://ti.arc.nasa.gov/tech/asr/intelligent-robotics/ngt/


StereoPipeline works just fine on CentOS 5.4
BUT
will NOT run on ARCH , or any other very new os ( fedora 12/13 ) - an old version of glibc is needed .
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