Spacelog Apollo 11

Houston, Apollo 11. Could you give us a couple of high-gain antenna angles, please?

Roger. Stand by, 11.

Roger, 11. Pitch minus 35, yaw 0. Over.

Thank you.

We got them.

Okay.

Houston, Apollo 11. How do you read high gain?

Read you loud and clear on high gain down here, and everything's looking good from our standpoint for your burn. Over.

Houston, burn completed. You copying our residuals?

That's affirmative.

And, Houston, looked like we saw about 87 or 88 psi on chamber pressure that time. I'd like you to look at that on the ground.

Roger, 11. We'll take a look at that and get back in a few minutes.

11, Houston. On our real-time telemetry we saw 95 to 97 psi on chamber pressure. We'll—We will look at the recordings down here, thought, and get back with you again. Over.

Okay. Thank you.

And we've copied your residuals, 11.

11, Houston. Could we get your DELTA-V counter reading, please, from this burn?

That's minus 3.8.

Minus 2.8?

3.8.

Roger. Copy minus 3.8.

Houston, is there anything else you need on the burn status report?

This is Houston. Negative, 11.

Apollo 11, this is Houston. Over.

Roger. Apollo 11.

Roger. I just wanted to remind you that we haven't noticed on the TM the VERB 66 after the burn. And for your information, we played the recorded TV back last night, I believe, after you all turned in for your rest period, and the pictures came out quite well. Over.

Did you get any usable pictures out of MILA on that first pass?

Not that we've seen. We had word on the voice loop that MILA reported that they had gotten a minute's worth of TV signal, and Goldstone reported that they had gotten about a minute's worth of modulation but that they weren't able to get anything off of it.

Okay. Thanks.

Okay. We have another input here, 11, that the MILA data was recognizable as a picture, but we don't have any evaluation as to the quality of the picture. Over.

Okay.

And for our information, we've been watching a PCO₂ again. Did you change a lithium hydroxide canister this morning? Over.

Yes. We did, and we've been seeing 1.7 percent in the spacecraft ever since.

Roger. That agrees with our data.

1.7 millimeters.

Roger. We copy.

Houston, Apollo 11. We're starting our maneuver to PTC attitude.

11, this is Houston. Over.

Go ahead.

Roger. From a propellant-balancing standpoint, we recommend that you use quads Alfa and Bravo to start the PTC maneuvers. Over.

Roger. Understand Alfa and Bravo.

11, this is Houston. Over.

Go ahead, Houston.

Roger. For CRYO-balancing purposes, we'd like you to turn the heater and oxygen tank number 1 off at this time. Over.

Okay. Stand by.

Got an anticyclone going in the southern hemisphere southeast of Brazil, and some—Well, the diameter of it must be over 2000 miles across.

How does the weather look up in the southern part of the western hemisphere, or up in the United States area?

Well, you all are just beginning to come over the limb now. I can see parts of Central America, and it looks to be fairly clear there. The islands in the Caribbean are beginning to come in and rather a few streaming lines of clouds. Looks like there is a system up to the—well, off of Greenland that has some large cloud streamers extending back down to the southwest. The east coast of the U.S. is just coming into view now, and it doesn't look too bad that I can see right now. We may have some pretty good shots later on this afternoon. Over.

Roger. Thank you.

Houston, Apollo 11.

Go ahead, 11.

I've got a comment about the point on the Earth where the Sun's rays reflect back up toward us. In general, the color of the oceans is mostly uniform and it's bright and darker blue except for that region that's about one-eighth of an Earth's radius in diameter; and in this circular area, the blue of the water turns a grayish color, and I'm sure that's where the Sun's rays are being reflected back on up toward us. Over.

Roger, Buzz. We noticed the same thing. It's very similar to looking at a light shining on something like a billiard ball or a bowling ball. You get this bright spot in the blue of the water, and that turns it to sort of a grayish color.

Yes. Is there a Navy term for that?

11, Houston.

Go ahead, Houston.

Mike, are you satisfied with P23 now?

Yes, I'm happy with the last updates we got, you know, in terms of what it did to our state vector. Still not altogether happy with the various procedures. If we could pick stars within the smaller range of trunnion angles so that you could allow P23 to pick its own maneuver and go to that substellar point and then have that star visible, that would seem to me to be the simplest and best way to do it.

How about the —

… correction on that last …

How about the horizon now? Is it pretty well defined for you and no longer hazy?

Yes. We're far enough out now that the—I think the horizon definition variation is lost in the North.