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Post by gonetoplaid on Aug 7, 2009 1:08:31 GMT -4
Does anyone know the slope of the terrain upon which the Apollo 11 LM landed? I haven't had any luck searching for the exact slope and bearing at which the LM came to rest. In any event, I know that the terrain underneath the LM wasn't level and that the terrain towards the west had to slope up. The reason I bring this up is that some HB's use the shadow lengths to "prove" that the sun couldn't have been at the real altitude of 14.8 degrees above the horizon when the EVA photos were taken. Yet there is a wealth of information to be gleaned from examining the scenery reflected off of Aldrin's visor. I've added a fully labeled photo of the visor reflection, and I was hoping that ya'all would check it out along with my comments regarding the labeled photo. Again, my new web page is at: www.mem-tek.com/apollo/ISD.html |
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Post by Obviousman on Aug 7, 2009 2:16:28 GMT -4
The problem is, as I'm sure you realise, that the terrain changes. The slope angle at the LM may have changed just a metre or two from the LM. If they stood inside a slight depression, like a crater, it may have been something entirely different. You can really only generalise within a few degrees.
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Post by Data Cable on Aug 7, 2009 6:21:47 GMT -4
Unfortunately, the one set of lunar topography maps available online which I'm familiar with doesn't include the A11 landing site. Besides, they have, at most, a 20m vertical resolution, so would probably be too coarse for your purposes.
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Post by randombloke on Aug 7, 2009 9:28:10 GMT -4
We will know more (much more) when the LRO finishes it's Lunar map.
Google Moon anyone?
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Post by gonetoplaid on Aug 7, 2009 12:53:42 GMT -4
I've been playing around with Google Moon. Not sure, but I think that they have the flag turned too much relative to the sun direction (east).
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Post by grashtel on Aug 7, 2009 16:16:13 GMT -4
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Post by gonetoplaid on Aug 7, 2009 17:51:09 GMT -4
Google has done a good job with Google Moon. Its definitely worth checking out. The Apollo 11 landing site, for example, has a 3D CAD model of the LM, all the panorama and other specific points marked. The big things lacking are positioning the LM with the correct tilt, the slopes for the terrain, and the inability to set the date and time for a given year, month and day as in July 21, 1969. Another missing feature is that there are no shadows cast by the 3D objects. When you change the time, all that happens is that the illumination upon the 3D LM changes as if the LM were on the rotating Earth surface instead of on the moon.
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Post by drewid on Aug 8, 2009 5:13:01 GMT -4
This thread might be useful for shadows and such, though I don't know how accurate the terrain is.
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Post by gonetoplaid on Aug 8, 2009 17:49:22 GMT -4
This thread might be useful for shadows and such, though I don't know how accurate the terrain is. Thanks for the link to that cool thread. I am checking it out... |
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