Spacelog Apollo 8

Roger. Ready to copy.

Roger. Pericynthian plus 2, minimum DELTA-V RCS/G&N 62871, NA, NA. 071:07:22.16, minus 00468, plus 00254, plus 00181 173 101 027, NA, plus 00187 00563 515 00563 01 3169 198 044, down 044, left 45, plus 1100, minus 02500 12967 36198 137:01:53, primary Sirius, secondary Rigel, 1.29 155 010, four jets plus X, assumes MCC 4 with same alignment. Over.

That is correct, Apollo 8.

Houston, Apollo 8. Confirm that boresight star and SPA are exactly the same number and not typographical error.

Roger, Apollo 8. They are checking that. Apollo 8, the computer is yours. You can take it back.

Roger. Going to BLOCK.

Apollo 8, Houston.

Apollo 8, Houston.

Houston, this is Apollo 8. Do you copy?

I do now loud and clear. I've got one more PAD for you, and the confirmation that those boresight star number and the pitch angle are correct at 44.

Roger. And we are ready to do our P52 preferred alignment at this time. Are you ready?

Affirmative.

Okay. We are ready to copy.

Houston, Roger. This is Apollo 8. You copy?

This is Houston. No joy.

Roger, Houston. This is Apollo. How you read?

Okay. Loud and clear, Bill.

Okay, Apollo 8. That's correct with one exception: in the PAD format under longitude NOUN 61, that is plus 06500. Over.

Roger. That's what I have, plus 06500.

Okay. That's correct, Apollo 8.

And we're ready to copy whatever else you have.

Apollo 8, let's go back and confirm on your minimum DELTA-V pericynthian plus 2 that the pitch column is 101; that's the fifth block down.

Roger. Pitch. Roger, pitch 101.

Okay. Thank you very much. And the item we have left to go is that we'd like to get with you on how you want to handle the problem with windows on REV 2.

Okay, Houston. Stand by on that, please.

Roger.

Houston, this is Apollo 8. We want you to come up with a suggested redline for RCS usage during lunar orbit, also, please.

Roger. That's in work.

And for your information, Houston, when the sun is shining on window 5, it's pretty hazy; window number 1 is a little bit better.

Okay. Thank you.

Houston, this is Apollo 8.

Houston, Apollo 8.

Apollo 8, go ahead.

Roger. We tried to get this realignment. We need—Do you have a maneuver to get us some gimbal angles so we don't get gimbal lock when we get the preferred alignment?

Stand by on that.

Thank you.

Houston, on our present position, we'll go into gimbal lock. I figure to try and get the preferred angle.

Say again, Apollo 8.

In running through PROGRAM 52, we got a PROGRAM ALARM 401 which would indicate that if we continued, we'd drive it into gimbal lock.

Roger. I understand.

Apollo 8, Houston. This should be an OPTION 1 like OPTION 3.

Houston, we're doing an OPTION 1 like OPTION 3. We keep getting a 401 ALARM, which says desired RCTU yields gimbal lock.

Apollo 8, Houston. It appears that you have maneuvered around the gimbal locks system.

Roger. Roger.

Okay. Sorry we were late on that answer.

Thank you.

Houston, Apollo 8.

Go ahead.

Well, we stopped and went through coarse align of P52 and then we got fine align, and pick-a-pair, pick Capella, but she drove and didn't get to any place. I didn't pick Capella, and I can't recognize any out there right now. Can I re-cycle here and go back and pick a pair?

Houston, Apollo 8.

Go ahead, Apollo 8.

My plan is to go back into re-enter PROGRAM 52—well, it did not drive to Capella, and I can't recognize it in the scanning telescope. My plan is to go back into recall P52.

Okay. Stand by one.

Apollo 8, can you confirm that you zeroed the optics prior to starting?

Roger. That's affirmative. We zeroed the optics.

Apollo 8, Houston. You have a GO for a second try in P52 with an OPTION 3.

Okay. I now have Aldebaran in the scanning telescope; I might want to call that one instead of Capella.

Okay.

Houston, Apollo 8. We came up with an unacceptable difference in our stars; we're going to have to recycle.

Roger.

If we don't get this midcourse in, what will that do to our pericynthian?

Stand by. We'll -

Apollo 8, Houston. In the event that we don't get this midcourse in, we'll still go for an LOI, and it's been suggested you might try Mirfak which is OCTO 10.

That's the one we're trying now.

Houston, Apollo 8.

Go ahead.

We are all set up and counting down at 8 minutes.

Roger.

Apollo 8, our data is down right now; appreciate making sure you have the tape recorder on.

Roger. I am going to go—I'll have to go COMMAND RESET. You've got control.

Houston, Apollo 8.

Go ahead.

Roger. You have some pitch and yaw angles for our PTC extra burn.

Okay, Apollo 8. That's pitch 348, yaw 315.

Pitch 348, yaw 315.

That's affirmative. And would you give us another hack on your countdown time?

It's 5:18 17 16 15 14.

Thank you.

Houston, I will give you a mark in 4 minutes.

Alright. Thank you.

3, 2, 1 -

MARK.

Four minutes.

Apollo 8, Houston. How about switching the BIOMED switch over to the left.

Roger. 3, 2, 1 -

MARK.

Houston, Apollo 8.

Go ahead.

Roger. Burn on time, angles nominal, burn time about 12 seconds, 0.2 feet per second after the DELTA-V_C, 0 in VG_X. We have transferred the results of the burn over to the left slot VERB 66.

Roger. And got a couple of items that I would like to clean up. We will get you an RCS budget. We've got one redline now; we are trying to get some firmer numbers for you, and we will have those in a little bit. Right now your PTC usage is right on the flight plan line, so everything looks pretty good there. We want to get a crew status report from you. We would like to firm up the REV 2 flight plan idea; and sometime at your convenience, we would like to take a reading of the PRD for the commander and CMP and then have you swap them. We are trying to isolate the—what the possible reason is for the discrepancies or the disparity in the two readings.

Roger.

And we are maneuvering to the PTC attitude, Houston.

Apollo 8, Houston. Could you give us the sign of that Z residual?

Stand by, Houston. Alright, Houston. Looks like we didn't record just the Z. We recorded DELTA-V_C, which is minus 0.2.

Okay. Understand.

DELTA-V was 0.1, but we didn't get the sign.

Roger. Understand that was DELTA-V_C was minus 0.2. I copied DELTA-V_Z; ZULU is 0.2. Is that incorrect?

Roger. It was 0.1, but we didn't get the sign.

Okay. Thank you.

We can get it. We have it on the tape, Houston, whenever you want to dump it.

Roger. Thank you.

It'll be about the last 5 minutes worth.

Roger.

Okay, Houston, for the PRD's: CDR is 0.07, CMP is 0.64, LMP is 0.80. Note that the CMP's hasn't changed since we started and the commander's hasn't changed much. We have swapped PRD's; commander has LMP, CMP has commander's, and LMP has CMP's PRD. Over.

Okay. Thank you.

Houston, Apollo 8.

Go ahead.

Roger. Crew status report as follows: water, the commander has about 50 clicks so far today; CMP 43; and the LMP is 44. We've eaten two meals so far today. Day 3 meal A and B; consumed most of it except for the hard hard bite, which no one cares for. Pudding was outstanding. We're at a gain of pericynthian now of plus 63 miles. Commander and CMP have had a rest period just before the midcourse 4 of about 2 hours.

Houston, Apollo 8.

Go ahead.