Frank Borman (CDR)

Houston, how do you read? Apollo 8.

Ken Mattingly (CAPCOM)

Loud and clear. Sorry to have stopped on you there. We are going over the summary of the systems data.

Frank Borman (CDR)

Go ahead, Houston. Apollo 8.

Ken Mattingly (CAPCOM)

Okay. I have a rundown on your systems here, GNC status. Everything looks real —

Frank Borman (CDR)

I want to wait until the LMP gets on the head set, Houston.

Jim Lovell (CMP)

Okay, Houston, go ahead. Flying EECOM's on the line.

Ken Mattingly (CAPCOM)

Okay. We'll just start with EECOM business then, I'll give you a summary of your batteries; battery A, we calculate 38.3 amp-hours, battery B —

Jim Lovell (CMP)

Stand by a second, Ken.

Frank Borman (CDR)

Let me get my chart out.

Ken Mattingly (CAPCOM)

Okay. Battery A 38.3, battery B 36.9, battery C, 38.5. That's looking pretty good. It looks like we got all the things back in that we took out, and we're running right along prediction. We would like to get a battery C voltage from you if you can just reach over there and switch it.

Frank Borman (CDR)

Roger. Thirty-seven volts, on battery C.

Ken Mattingly (CAPCOM)

Roger. Thirty-seven volts, Okay. The predicted cryo quantities at SEP: on oxygen tank 1, 170; oxygen tank 2, 170; hydrogen 1, 9.5; and hydrogen 2, 10.0. You essentially have single cryo tank capabilities all the way at full power now.

Ken Mattingly (CAPCOM)

The secondary coolant loop really looked good. Looks like you had a nice tight radiator and everything else on there was working right along the performance curves. Your main oxygen regulators both filled at 104 psi during our check. Looking at the lunar orbit, expect to be doing a water boil of about 1 pound per hour, and this is just an approximation; there's quite a variety of estimates as to what the water boiling requirements may be, might go anywhere from boiling lots to not boiling at all. The next water dump will be coming up after TEI, so you don't have to worry about any of that until you get through. Communications predictions are looking good, possibly a little bit better than what we had hoped for, and looks like we're going to get high bit rate on OMNI's with our 210-foot dish at Goldstone. This will be working for us on the first couple of rev's, and then we'll be switching sites, so we'll go back to using OMNI's for high bit. The voice quality on DSE is good. Your fuel cells have been running above nominal for the entire flight, and they really look nice and stable. There's been some destratification -

Bill Anders (LMP)

… on normal voice, doesn't it?

Ken Mattingly (CAPCOM)

Okay. Looks like may not be able to hack the normal voice. On the cryo tanks, we've had quite a bit of destratification, particularly in the oxygen, and you notice this during the fan cycles and DELTA-V's, so we're going to be sure and we'll remind you again to stir up the oxygen prior to LOI. CMC is running along like clockwork. G&C tells us that the RCS quantities are looking good. You're using the same amount as predicted for your PTC and for your alignment. What we have in the way of a redline: we're going to tell you that you can use 30 percent per quad in lunar orbit. Now this is quite a bit of fuel to play with, and you can take 30 percent and subtract that from what you have to completion of LOI, and that will be a good number.

Ken Mattingly (CAPCOM)

On the SPS, the oxidizer and fuel feed line temperatures are 75 and holding steady. The service module RCS quad package temps are cycling and holding between 120 and 140, and looks like we're getting good normal heater operations. We plan to have you in a 60-mile circular orbit after LOI 2. And we should have some PAD's for you on the LOI burn at about 67 hours.

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Frank Borman (CDR)

Roger. We got all that.

Ken Mattingly (CAPCOM)

Okay. We're still going through the tracking, and as you know, we're going to hold down on the water dumps and so forth during the last couple of hours in and out, sort of aid the tracking procedures. Everything is running along the line normally now. Do you have any other specific questions? We are looking for an angle on the moon. I guess that about summarizes the system. Everything looks GO right now.

Frank Borman (CDR)

Okay, Ken. Thank you. We just completed day 3 meal C, and now are going to break up and each take a rest period before LOI.

Ken Mattingly (CAPCOM)

Okay, real fine. Everybody wanted to ask if you wouldn't try and get some sack time here before we go in. It's going to be a big day.

Ken Mattingly (CAPCOM)

Finally found out where the moon is, and your present PTC attitude—if you happen to look out the right window as you go by—roll attitude of 320, it should be there.

Frank Borman (CDR)

Roger. Bill would like to ask the doctor for permission to take a Seconal.

Bill Anders (LMP)

Houston, this is Apollo 8. Did you call? We lost track for a minute.

Ken Mattingly (CAPCOM)

Okay, Apollo 8. You're cleared to go ahead with that pill. Take—Surgeon recommends a small one.

Ken Mattingly (CAPCOM)

Apollo 8, Houston. If you can, we'd like to have you stir up the oxygen cryo.

Frank Borman (CDR)

Okay, I'll do that right now. Just a moment, just the oxygen?

Ken Mattingly (CAPCOM)

Okay. We want to get both the oxygen and hydrogen.

Frank Borman (CDR)

Just the oxygen, then?

Ken Mattingly (CAPCOM)

No, sir; both the oxygen and the hydrogen.

Frank Borman (CDR)

Okay. Start, starting with the hydrogen.

Frank Borman (CDR)

Okay. Houston, Apollo 8. We've cycled through all of the cryo fans.

Frank Borman (CDR)

Houston, Apollo 8. How do you read?

Ken Mattingly (CAPCOM)

Loud and clear, Apollo 8.

Ken Mattingly (CAPCOM)

Roger. We had a momentary loss there.

Frank Borman (CDR)

How's the tracking data look, Ken?

Bill Anders (LMP)

Houston, Apollo 8 with a radio check.

Jerry Carr (CAPCOM)

Apollo 8, Houston. Loud and clear.

Jerry Carr (CAPCOM)

Howdy. The Black Watch is watching.

Bill Anders (LMP)

How do you read on this—how do you read on this antenna?

Jerry Carr (CAPCOM)

Loud and clear on that one, Bill.

Frank Borman (CDR)

Houston, Apollo 8. Do you read on OMNI 3?

Jerry Carr (CAPCOM)

Apollo 8, Houston. Reading you loud with some background noise.

Frank Borman (CDR)

Roger. You are loud and clear.

Jerry Carr (CAPCOM)

Apollo 8, Houston. COMM check.

Jim Lovell (CMP)

Roger, Houston. This is Apollo 8. Loud and clear. How me?

Jerry Carr (CAPCOM)

Roger. Loud and clear, Jim.

Jerry Carr (CAPCOM)

Apollo 8, Houston with a preliminary LOI 1 PAD. Over.

Jerry Carr (CAPCOM)

Apollo 8, Houston. Over.

Jim Lovell (CMP)

This is 8. Go ahead, Houston.

Jerry Carr (CAPCOM)

Apollo 8, Houston. This is a preliminary LOI 1 PAD. Over.

Jim Lovell (CMP)

Houston, Apollo 8. Ready to copy.

Jerry Carr (CAPCOM)

Apollo 8, this is Houston. Roger. LOI 1 SPS/G&N, 62844, minus 161, plus 129 069:08:18.41. Copy?

Jerry Carr (CAPCOM)

Roger, 8. Minus 29837, plus 02390, plus 00994 000 200 005 01693, plus 00600 29949 402 29782. Copy?

Jerry Carr (CAPCOM)

Roger, 8. 010 689 260 Persei Zeta, down 048, left 05. The remainder is not applicable. Sirius, Rigel, set of stars for GDC align, 129 155 010, negative ullage. We'll pass the horizon window data later. Over.

Jim Lovell (CMP)

Roger. Preliminary LOI 1 PAD as follows: SPS/G&N; 62844, minus 161, plus 129. Are you copying?

Jim Lovell (CMP)

069:08:18.41, minus 29837, plus 02390, plus 00994 000 200 005 01693, plus 00600 29949 402 29782 010 689 260, Persei Zeta, down 048, left 05. The remainder not applicable. Sirius, Rigel, 129 155 010. No ullage. We'll pass up the remainder up later.

Jerry Carr (CAPCOM)

Roger, Jim. One question—we talked about a P40 gimbal check. Would you like to do that during this maneuver to LOI 1 attitude, or would you rather hold that off until a little closer to LOI? Over.

Jim Lovell (CMP)

Let me check on that. Wait one, Houston.

Jim Lovell (CMP)

Roger. We could make this gimbal check as a maneuver to the LOI attitude.

Jim Lovell (CMP)

I understand that you'll load us up with the LOI 1 PAD and we'll run through P40 as far as the gimbal check.

Jerry Carr (CAPCOM)

Roger. That's what we heard you were going to do on it. Are you going to run both the manual gimbals as well as the automatic? Over.

Jerry Carr (CAPCOM)

Apollo 8, Houston. Standing by to monitor P52. Over.

Frank Borman (CDR)

Roger. Houston, Apollo 8. P52 complete.

Jerry Carr (CAPCOM)

Apollo 8, Houston. Roger. Copy.

Frank Borman (CDR)

Houston, how do you read? Apollo 8.

Jerry Carr (CAPCOM)

Apollo 8, this is Houston. Loud and clear.

Frank Borman (CDR)

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?

Jerry Carr (CAPCOM)

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.

Frank Borman (CDR)

Understand. VERB 47 when you call.

Jerry Carr (CAPCOM)

Negative; VERB 74.

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Spoken on Dec. 24, 1968, 3:29 a.m. UTC (55 years, 10 months ago). Link to this transcript range is: Tweet

Jerry Carr (CAPCOM)

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.

Frank Borman (CDR)

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?

Jerry Carr (CAPCOM)

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

Jerry Carr (CAPCOM)

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

Frank Borman (CDR)

Houston, Apollo 8. Are you getting the dump?

Jerry Carr (CAPCOM)

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.

Jerry Carr (CAPCOM)

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

Jerry Carr (CAPCOM)

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

Frank Borman (CDR)

Same magnitude as Enif.

Frank Borman (CDR)

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

Jerry Carr (CAPCOM)

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

Frank Borman (CDR)

Go ahead, Houston. Apollo 8.

Jerry Carr (CAPCOM)

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.

Frank Borman (CDR)

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

Frank Borman (CDR)

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

Jerry Carr (CAPCOM)

Roger. Standing by to monitor.

Jim Lovell (CMP)

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.

Jerry Carr (CAPCOM)

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

Jim Lovell (CMP)

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.

Frank Borman (CDR)

Jerry, this is Apollo 8.

Frank Borman (CDR)

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?

Jerry Carr (CAPCOM)

Affirmative, Frank. That is correct.