I have the full Press conference along with the transcript which includes images of the slides they were referring to (as does everyone here I assume as unlike a certain persons 'super secret film of Earth from Apollo' they are easily available. It just struck me that I thought he was making a joke.
Editing to add. Sorry Kiwi, having gone back and checked. Those are exactly the pages I am referring to above. Please put it down to new poster blues.
That's okay. I screwed up too when I repeated what I'd heard from someone else about when the crew photographed the solar corona -- in lunar orbit. Have now checked my version of all three voice transcripts amalgamated, and it wasn't during lunar orbit. It was while approaching the moon and between about 11,232 and 9,761 nautical miles away. Between Ground Elapsed Times 71:34:00 and 72:00:00.
Here's everything from the transcripts:--
71:31:xx PAO: This is Apollo Control at 71 hours, 31 minutes. Apollo 11's distance from the moon now 11,232 nautical miles approaching at a velocity of 4,141 feet per second.
71:33:08 Aldrin: Houston. Apollo 11.
71:33:12 Capcom: Apollo 11, this is Houston. Go ahead. Over.
71:33:25 Capcom: Apollo 11, this is Houston. Go ahead. Over.
71:33:40 Capcom: Apollo 11, this is Houston. Go ahead. Over.
71:33:47 Armstrong: Houston, do you read Apollo 11?
71:33:49 Capcom: Roger, 11. We're reading you loud and clear now. We were down in the noise as we switched antennas a minute or so ago. Over.
71:34:00 Collins: Roger. What sort of settings could you recommend for the solar corona? We've got the Sun right behind the edge of the Moon now.
71:34:12 Capcom: Roger.
71:34:16 Aldrin: It's quite an eerie sight. There is a very marked three-dimensional aspect of having the Sun's corona coming from behind the Moon the way it is.
71:34:27 Capcom: Roger.
71:34:31 Aldrin: And it looks as though - I guess what's giving it that three-dimensional effect is the earthshine. I can see Tycho fairly clearly - at least if I'm right side-up, I believe it's Tycho, in moonshine - I mean, in earthshine. And, of course, I can see the sky is lit all the way around the Moon, even on the limb of it where there's no earthshine or sunshine.
71:35:40 Capcom: Apollo 11, this is Houston. Over.
71:35:45 Aldrin: Go ahead.
71:35:47 Capcom: Roger. If you'd like to take some pictures, we recommend using magazine Uniform which is loaded with high speed black and white film, interior lights off, electric Hasselblad with the 80-millimeter lens. And you're going to have to hand-hold it, I guess. We're recommending an f-stop of 2.8, and we'd like to get a sequence of time exposures. Over.
71:36:24 Aldrin: Okay. You want magazine Uniform instead of magazine Tango ? Over.
71:36:30 Capcom: Roger. We're not trying to get you all wrapped up in a procedure here. This is on a not-to-interfere basis, of course. Over.
71:36:43 Aldrin: Okay.
71:36:46 Capcom: And on the exposures we're looking for an eighth of a second, a half a second. And, if you think you can steady the camera against anything to get longer exposures, 2 seconds, 4 seconds, and 8 seconds. Over.
71:37:11 Aldrin: Roger. We copy.
71:37:13 Capcom: Roger. Out.
71:39:15 Capcom: Apollo 11, Houston. Over.
71:39:23 Collins: Go ahead, Houston.
71:39:25 Capcom: Roger. We'd like to do a little Cryo tank balancing. So, if you could position the oxygen tank number 1 heater switch to Off and hydrogen tank 2 heater switch to Off leaving all the rest of the Cryo switches the same, we'll let it run that way for a few hours. Over.
71:39:48 Collins: Okay. Stand by one on those switches. We'll get them in a minute.
71:39:51 Capcom: Roger. And how far out can you see the corona extending? Over.
71:40:13 Armstrong: ... bit like zodiacal light. It keeps going out farther and farther. We'll talk about it a little more later.
71:40:31 Capcom: Roger. Out.
71:43:11 Armstrong: ... We've got quite a few pictures ...
71:44:06 Capcom: Apollo 11, this is Houston. I think we have Comm again. We heard you calling. Over.
71:44:27 Capcom: Apollo 11, this is Houston. Were you calling? Over.
71:44:48 Collins: Houston, Apollo 11. Understand you want the heaters Off for hydrogen tank 1 and oxygen tank 1. Is that affirmative ?
71:44:56 Capcom: That's negative, Mike. Hydrogen tank number 2 heaters Off and oxygen tank number 1 heaters Off.
71:45:05 Collins: Okay.
71:45:07 Capcom: Roger. Out.
71:45:12 Collins: I have hydrogen tank number 2 heaters Off; I have oxygen tank number 1 heaters Off.
71:45:18 Capcom: Roger. Out.
71:52:15 Collins: Houston. Apollo 11. The earthshine coming through the window is so bright you can read a book by it.
71:52:24 Capcom: Oh, very good.
71:52:xx PAO: That was Mike Collins reporting.
71:56:00 Armstrong: And, Houston, I'd suggest that along the ecliptic line we can see the corona light out to two lunar diameters from this location. The bright light only extends out about an eighth to a quarter of the lunar radius.
71:56:35 Capcom: Roger. Understand that you can see the corona approximately 200 solar diameters out along the ecliptic, and the bright light extends out approximately one-eighth to one-quarter lunar radius. Over.
71:56:52 Armstrong: That's two lunar - two lunar diameters along the ecliptic in the bright part, right; a quarter to an eighth of a lunar radius out, and that's perpendicular to the ecliptic line on the South Pole.
71:57:07 Capcom: Roger.
71:57:xx PAO: That last transmission was from Neil Armstrong.
71:59:20 Armstrong: Houston, it's been a real change for us. Now we are able to see stars again and recognize constellations for the first time on the trip. It's - the sky is full of stars. Just like the nightside of Earth. But all the way here, we have only been able to see stars occasionally and perhaps through the monocular, but not recognize any star patterns.
71:59:52 Capcom: I guess it has turned into night up there really, hasn't it ?
71:59:58 Armstrong: Really has.
72:04:57 Capcom: 11, this is Houston. Go ahead. Over.
72:07:xx PAO: This is Apollo Control at 72 hours, 7 minutes. Apollo 11 is 9,761 nautical miles from the moon, velocity 4,217 feet per second. Weight 9612 pounds.
Thanks to Apollo 13, I always cringe a little when I read talk about the cryo tanks and heaters.