Re: Apollo 11 - 50 years on.
077:12:07 Aldrin Roger. Seems to me, since we know orbits so precisely, and know where the stars are so precisely, and the time of setting of a star or a planet to so very fine a degree, that this might be a pretty good means of measuring the altitude of the horizon ...
077:12:32 Mission Control Roger.
077:12:51 Armstrong Hey, Houston. I'm looking north up toward Aristarchus now, and I can't really tell at that distance whether I am really looking at Aristarchus, but there's an area that is considerably more illuminated than the surrounding area. It just has - seems to have a slight amount of fluorescence to it. A crater can be seen, and the area around the crater is quite bright.
077:13:29 Mission Control Roger, 11. We copy.
077:14:23 Aldrin Houston, Apollo 11. Looking up at the same area now and it does seem to be reflecting some of the earthshine. I'm not sure whether it was worked out to be about zero phase to - Well, at least there is one wall of the crater that seems to be more illuminated than the others, and that one - if I'm lining up with the Earth correctly, does seem to put it at about a zero phase. That area is definitely lighter than anything else that I could see out this window. I am not sure that I am really identifying any phosphorescence, but that definitely is lighter than anything else in the neighborhood.
077:15:15 Mission Control 11, this is Houston. Can you discern any difference in color of the illumination, and is that an inner or an outer wall from the crater? Over.
077:15:33 Collins Roger. That's an inner wall of the crater.
077:15:42 Collins No, there doesn't appear to be any color involved in it, Bruce.
077:15:47 Mission Control Roger. You said inner wall. Would that be the inner edge of the northern surface?
077:16:00 Aldrin Well, I guess it would be the inner edge of the west-northwest part, the part that would be more nearly normal if you were looking at it from the Earth.
077:16:19 Mission Control 11, Houston. Have you used the monocular on this? Over.
077:16:29 Collins Stand by one.
077:18:00 Collins Roger. Like you to know this quest for science has caused me to lose my lunch. It's supposed to be around here somewhere, but I can't find it.
