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APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 5:33 am
by APOD Robot
Apollo 17 Site: A Sharper View
Explanation: This view of the Apollo 17 landing site in the Taurus-Littrow valley was captured last month by the Lunar Reconnaissance Orbiter (LRO), the sharpest ever
recorded from space.
The high resolution image data was taken during a period when LRO's orbit was modified to create a close approach of about 22 kilometers as it passed over some of the Apollo landing sites. That altitude corresponds to only about twice the height of a commercial airline flight over planet Earth. Labeled in this image are Apollo 17 lunar lander
Challenger's descent stage (inset), the
lunar rover (LRV) at its final
parking spot, and the Apollo Lunar Surface Experiments Package (ALSEP)
left to monitor the Moon's environment and interior. Clear, dual lunar rover
tracks and the foot trails left by astronauts
Eugene Cernan and Harrison Schmitt, the last to walk on the lunar surface, are also easily visible at the
Apollo 17 site.
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Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 5:45 am
by bystander
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 5:47 am
by owlice
I've let the editors know about the links not being set correctly for Next, Discuss, and Previous.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 5:52 am
by Douglas L. Marin
There doesn't appear to be any foot prints from the LRV to the Challenger Descent Stage. How did the astronaut get back to the CDS for blast off?
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 6:00 am
by Douglas L. Martin
There doesn't appear to be footprints leading from the LRV to the Challenger Descent Stage. How did the Astronaut return to the Challenger for takeoff?
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 6:37 am
by simlstar2004
The image posted on APOD of the Apollo 17 landing site is not a very good resolution. When I checked its dpi it is only 1600 x 1200.
So if you want a better resolution of looking closer to the landing pod (using a graphic photo editor software eg: Photoshop or Photo Paint) just increase the image dpi to 6000 x 4500 dpi and then use the "unsharp mask tool" to increase the sharpness of the image. I did and it looks a lot better.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 8:47 am
by JohnD
Stunning pics, It's been counter-intuitive that while Hubble can take pics of the most distant objects in the Universe, out to the 13B light year limit, it can't take them of the Moon! So about time, as some might say, to have pics of the Apollo sites, though you really have to be a committed conspiracy theorist to need them.
What's amusing is that they are seriously unconverted! See the comments in the UK Daily Mail (never short of a conspiracy, or a nutcase) page about the new pics:
http://www.dailymail.co.uk/sciencetech/ ... ds-newsxml
John
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 11:06 am
by Mr E
Way better than any crop circles, I can see what could be the outline of Elvis, really, honestly, I can! (far right hand edge, immediately above the footprint trails)
![Laughing :lol:](./images/smilies/icon_lol.gif)
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 11:16 am
by nstahl
Otto Posterman isn't doing its job so well. I'm tempted to suspect we don't have a robot doing our posting, but just a human pretending to be a robot at great taxpayer expense.
![Smile :)](./images/smilies/icon_smile.gif)
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 12:18 pm
by orin stepanek
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 1:19 pm
by rbonassoii
As I opened up today's picture,September 8, 2011, I noticed the tracks
in the surface of the moon of the rover and the astronauts footprints.
However, upon further inspection, if you look in the upper right hand
of the photograph, you will see what looks like foot trails leading a
spot where the initials "HS" have been made in the surface. It makes
sense, since Harrison Schmitt was on that mission!! As you look at the
photo, they appear upside down, but that is relative to the angle in
which the picture was taken.
Can this be possible??
I'd love to hear your thoughts on it.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 1:24 pm
by Dave S
22 km is a very close approach for a satellite. Does anyone know if this is a record? I'm wondering if Galileo or Cassini had any approaches near this close to Jovian or Saturnian moons.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 1:50 pm
by owlice
rbonassoii wrote:you will see what looks like foot trails leading a spot where the initials "HS" have been made in the surface.
I believe this is the area you mean, yes?
![Screen shot 2011-09-08 at 9.45.52 AM.jpg](./download/file.php?id=4466&sid=49638118c52cb05ab315088c31429b95)
- Screen shot 2011-09-08 at 9.45.52 AM.jpg (9.59 KiB) Viewed 2818 times
That certainly does look like initials....!!
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 2:10 pm
by Chris Peterson
JohnD wrote:Stunning pics, It's been counter-intuitive that while Hubble can take pics of the most distant objects in the Universe, out to the 13B light year limit, it can't take them of the Moon! So about time, as some might say, to have pics of the Apollo sites, though you really have to be a committed conspiracy theorist to need them.
But a committed conspiracy theorist never needs
any evidence! In fact, evidence to the contrary usually just makes a conspiracy nut even more entrenched. I recommend
this fascinating little article about science deniers and conspiracy nuts. Whether you're talking about people who think the Moon landings were faked, that vaccines cause autism, that global warming is a hoax, the psychology is the same.
What's amusing is that they are seriously unconverted!
Actually, that reflects a somewhat rational attitude. After all, if you believe that we were able to fake an entire manned lunar exploration program, you really would be crazy to change your opinion based on a set of digital images.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 2:20 pm
by kailing
rbonassoii wrote:As I opened up today's picture,September 8, 2011, I noticed the tracks
in the surface of the moon of the rover and the astronauts footprints.
However, upon further inspection, if you look in the upper right hand
of the photograph, you will see what looks like foot trails leading a
spot where the initials "HS" have been made in the surface. It makes
sense, since Harrison Schmitt was on that mission!! As you look at the
photo, they appear upside down, but that is relative to the angle in
which the picture was taken.
Can this be possible??
I'd love to hear your thoughts on it.
It seems like that. Hahaha he had good humor.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 2:23 pm
by owlice
Let's not by our comments invite conspiracy theorists to comment, please. I've already removed one such post, and have other things I'd rather do this morning than deal with more. Thanks!
APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 2:51 pm
by JohnD
Chris,
Test of theory - we look. Closely.
And there IS evidence.
So the theory must, should be adapted to include the new evidence.
But it is difficult to do that, without throwing it out of the window.
As an astronomer, doesn't this bring to your mind the geo- and helio-centric solar system arguments? As more evidence accumulates, more denial is heaped up. It's human to hold onto a weak theory, especially if it's yours, but it isn't rational.
JOhn
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 3:00 pm
by Boomer12k
I prefer to get out my 10inch Meade LX200 GPS and do some REAL Astronomy!!!!
:--------======== *
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 4:05 pm
by neufer
JohnD wrote:
It's been counter-intuitive that while Hubble can take pics of the most distant objects in the Universe, out to the 13B light year limit, it can't take them of the Moon!
The Hubble Space Telescope (HST) has a mirror diameter of 2.4 m
and is 350,000km from the moon's surface.
The Lunar Reconnaissance Orbiter Camera (LROC) has a mirror diameter of 0.195 m
but it is just 22km from the moon's surface.
For HST to have the
lunar resolution of the LROC
it would need a mirror diameter of about 3100 meters [= 0.195 x (350,000/22) m].
If you want good pictures of the moon or planets it makes the most sense to just go there.
If you want good pictures of galaxies or stars it makes the most sense to place large apertures in as dark an environment as possible.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 4:10 pm
by Ann
To me the Moon landing - and then I mean Apollo 11, of course - wasn't life-changing. It made a greater impression on me to go out at night and look at the stars with my newly-acquired knowledge that these tiny points of lights were mighty suns unimaginably far away than it did to go out and look at the Moon and try to comprehend that there were people up there.
Still, I did go out and looked at the Moon and tried to comprehend that there were people up there. It felt unreal, because the Moon looked exactly the same as before. (Yes, I realized, even back then, that the Moon was so far away and the astronauts were so tiny compared with the Moon that it was impossible to see any signs of the astronauts and their equipment from the Earth.)
I remember that everybody was in awe. The whole thing was just so solemn, so incomprehensibly amazing. But the wonder waned quickly. There was soon another Apollo mission, Apollo 12, but the media, which had treated Apollo 11 as the pinnacle of human progress (and perhaps it was), treated Apollo 12 as old news. The there was Apollo 13, and we were all riveted again, biting our nails as we fervently hoped that the astronauts would return home safe and sound. When they did, we cheered. It was so heroic. But then there was Apollo 14, and nothing special happened. Apollo 15, 16 and 17 came and went. And then it was all over.
Now, almost 40 years later, we get to see physical signs of humanity on the Moon. It is so poignant. For me it is like returning to my youth again and to a time of innocence, when everything seemed possible, and yet, also the time when NASA accepted that the returns on the investments into the Apollo mission no longer matched the costs. It was a turning point, perhaps in more ways than was obvious back then.
But it is very poignant to see these signs of humanity on the Moon. In a way they are like the pyramids in Egypt: awesome reminders of the fantastic efforts of people in the past, and their incredible accomplishments.
Ann
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 4:51 pm
by neufer
Dave S wrote:
22 km is a very close approach for a satellite. Does anyone know if this is a record? I'm wondering if Galileo or Cassini had any approaches near this close to Jovian or Saturnian moons.
Well...there has been one extraterrestrial moon landing
(with pictures all the way down):
http://apod.nasa.gov/apod/ap050117.html
Dangerous close flybys have only been attempted on
extended missions:
http://en.wikipedia.org/wiki/Cassini%E2%80%93Huygens wrote:
<<On March 12, 2008, Cassini made a close fly-by of Enceladus, getting
within 50 km of the moon's surface. The spacecraft passed through the plumes extending from its southern geysers, detecting water, carbon dioxide and various hydrocarbons with its mass spectrometer, while also mapping surface features that are at much higher temperature than their surroundings with the infrared spectrometer.>>
http://en.wikipedia.org/wiki/Galileo_%28spacecraft%29 wrote:
<<Once Galileo's prime mission was concluded, an extended mission followed, starting on December 7, 1997; the spacecraft made a number of daring close flybys of Jupiter's moons Europa and Io. The closest approach (to Io) was
180 km on October 15, 2001. The radiation environment near Io in particular was very unhealthy for Galileo's systems, and so these flybys were saved for the extended mission when loss of the spacecraft would be more acceptable.>>
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 6:29 pm
by owlice
There is at least one set of initials on the moon from Apollo 17:
While Jack cleaned up inside, I drove the Rover about a mile away from the LM and parked it carefully so the television camera could photograph our takeoff the next day. As I dismounted, I took a moment to kneel and with a single finger, scratched [my daughter] Tracy's initials, T D C, in the lunar dust, knowing those three letters would remain there undisturbed for more years than anyone could imagine.
http://www.nationalaviation.org/cernan-eugene/
(Also in the book Cernan authored called
The Last Man on the Moon: Astronaut Eugene Cernan and America's Race in Space.)
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 7:22 pm
by Donnageddon
Pics or it didn't happe... oh wait.
Very cool!
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 7:28 pm
by BMAONE23
Probably, the only way to silence conspiracy theorists is to return to the moon and blanket a crater that is visible to small telescopes with something like Red Umbrellas.
Re: APOD: Apollo 17 Site: A Sharper View (2011 Sep 08)
Posted: Thu Sep 08, 2011 8:06 pm
by bystander