New, higher resolution photos of the Apollo 17 landing site

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New, higher resolution photos of the Apollo 17 landing site

Postby Smersh » Sat Sep 10, 2011 3:19 am

The new pictures were taken by the Lunar Reconnaissance Orbiter (LRO.) This time they were taken from a much lower altitude - 20 km. (The previously released ones were taken from 50 km.)

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Figure 1: Resolution comparison between nominal orbit images of the Apollo 17 landing site (a, b) and the new low orbit image (c; 27 cm x 56 cm pixel size). What is visible in an image is not simply a matter of the size of a pixel projected onto the surface. Sun angle and direction are also important factors, as is the exposure level. When the Sun is high above the horizon differences in surface brightness are enhanced, and when the Sun is low surface roughness is more obvious. Linear features are enhanced when they lie perpendicular to the direction to the Sun, and tend to disappear when parallel. When an image is underexposed or overexposed contrast and detail suffer. The top two images (a,b) have larger pixel scales (49 cm, 54 cm) and incidence angles (55° and 21° from vertical) that bracket the new higher resolution image (c; 45°).



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Figure 2: The twists and turns of the last tracks left by humans on the moon crisscross the surface in this LRO image of the Apollo 17 site. In the thin lunar soil, the trails made by astronauts on foot can be easily distinguished from the dual tracks left by the lunar roving vehicle, or LRV. Also seen in this image are the descent stage of the Challenger lunar module and the LRV, parked to the east.

The LRV gave the Apollo 17 astronauts, Eugene Cernan and Harrison Schmitt, considerable mobility. As in previous Apollo missions, the astronauts set up the lunar monitoring equipment known as the Apollo Lunar Surface Experiments Package (ALSEP), the details of which varied from mission to mission. To the west of the landing site, the cross-shaped path that the astronauts made as they set up the geophones to monitor seismic activity can be seen.

To the east, more rover tracks can be seen. Cernan made these when he laid out the 35-meter antennas for the Surface Electrical Properties, or SEP, experiment. SEP, a separate investigation from ALSEP, characterized the electrical properties of the lunar soil.

Below the SEP experiment is where the astronauts parked the rover, in a prime spot to shoot video of the liftoff of the Challenger module.

Credit: NASA/Goddard/ASU


http://cio.gsfc.nasa.gov/mission_pages/ ... 10906.html

(Larger versions of the above pictures are available at the above link.)


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Re: New, higher resolution photos of the Apollo 17 landing s

Postby Zep Tepi » Wed Sep 28, 2011 9:53 am

Nice post Smersh, those photos are cool. Being able to see those tracks years after the astronauts left them is pretty special.
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Re: New, higher resolution photos of the Apollo 17 landing s

Postby RICH-ENGLAND » Wed Sep 28, 2011 3:11 pm

Zep Tepi wrote:Nice post Smersh, those photos are cool. Being able to see those tracks years after the astronauts left them is pretty special.


it still wont be enough to convince the no moon landing lunatics though....

thanks

rich
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Re: New, higher resolution photos of the Apollo 17 landing s

Postby Smersh » Fri Sep 30, 2011 10:46 am

RICH-ENGLAND wrote:
Zep Tepi wrote:Nice post Smersh, those photos are cool. Being able to see those tracks years after the astronauts left them is pretty special.


it still wont be enough to convince the no moon landing lunatics though....

thanks

rich


Well it might convince some Rich but others are already saying the pictures are fakes. With some of those hoax believers, even if they were flown to the moon and personally shown the sites themselves they still wouldn't believe it, saying they'd been hypnotised or something ...
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