Spacelog Apollo 8

Houston, how do you read? Apollo 8.

Apollo 8, this is Houston. Loud and clear.

Okay, Jerry. At 67, we are going over to the LOI 1 attitude, do a sextant star check, and then we will have to go back to PTC. I want to know if you want us to go back to the same attitudes we are at now?

Apollo 8, Houston. That is affirmative, Frank. We are getting ready to ask you to do an erasable dump, VERB 47. We are ginning up to get ready for it now, and we will call you as soon as we are ready to copy.

Understand. VERB 47 when you call.

Negative; VERB 74.

Okay. VERB 74.

Apollo 8, this is Houston. We are setting up for the dump now. It will take about 3 minutes and 20 seconds once we start the dump. Over.

Houston, Apollo 8.

Apollo 8, Houston. Go.

Roger. Can you point out the position of this Zeta Persei to us a little better? We don't have it marked on our charts. We have got Mirfak, and we know Algol, but which one is Zeta Persei?

Roger, Frank. Persei Zeta is just about exactly between Aldebaran and Mirfak.

Apollo 8, this is Houston. We are ready for your CMC erasable dump. Key VERB 74 ENTER. Over.

Roger.

VERB 74 ENTER.

Did you get it?

Houston, Apollo 8. Are you getting the dump?

Apollo 8, this is Houston. Indications are that we are getting it; we are checking. You will have to leave the computer alone for 3 minutes and 20 seconds. Over.

Roger. We are.

Apollo 8, Houston. We are getting your dump low bit rate through Honeysuckle.

Roger.

Apollo 8, Houston. Persei Zeta is a third magnitude star same as Enif. Over.

Same magnitude as Enif.

Affirmative.

Jerry, when are you going to send us the TEI 1 and the rest of that block data?

Apollo 8, Houston. PC plus 2 does not need an update. We'll have your TEI 1 and 2 in about 10 minutes. Over.

Apollo 8, Houston.

Go ahead, Houston. Apollo 8.

Apollo 8, Houston. The dump is complete; you can have your computer back. The reason for the dump was to investigate further the P52 anomaly you had about 4 hours ago. We will try to have some words for you in about 20 or 30 minutes. Over.

You mean when it wouldn't come up with the proper star?

Affirmative.

Okay.

We are going to go ahead and start our maneuver to LOI 1 attitude.

Roger. Standing by to monitor.

Houston, Apollo 8.

Houston. Go ahead.

During the flight, I noticed that the AUTO optics wouldn't drive to the star pick-a-pair selected. Example, it picked Alpheratz at one time, wouldn't drive there, drove to a spot that had no star; and I went back and reselected the program and came back, and it worked okay.

Roger, Jim. Copy.

Jim, is this anomaly you are talking about—was that 4 hours ago when we did the REFSMMAT align?

This happened, I think, yesterday. When we—we were doing a regular REFSMMAT alignment. Alpheratz was the first star selected, and it didn't drive to Alpheratz; and I ran and reselected the program again, and it worked okay.

Go ahead.

Apollo 8 here, Jerry.

Go ahead, Frank.

Our PAD here is—Roger. Our PAD here hasn't been correct. I understand the gimbal angles for LOI 1 are roll 0, pitch 200, and yaw 5. Is that correct?

Affirmative, Frank. That is correct.