Spacelog Apollo 8

That completes it, Jerry. They're all cycled through.

Roger, Frank.

Houston, Apollo 8.

Apollo 8, Houston. Roger.

Did you get my message about the fans?

Sure did, Frank. Thanks.

Houston. Apollo 8.

Apollo 8, Houston. Go.

Apollo 8, Houston. Go.

Roger. The cabin temperature is down to 60, and it's getting pretty chilly in here. Have you got any approved solutions on how to bring it up without stirring up this nice thermal balance we have?

Roger. Stand by.

Frank, do you have your cabin fans on?

Negative.

Roger.

We haven't had them on since we separated.

Okay.

Go ahead.

Roger, Frank. Midcourse number 3 looks like just a shade more than 1 foot per second, so we don't recommend that you do it. That leads us off into a midcourse 4 of only about 3 feet per second right now. Your trajectory is looking real good. Your height at pericynthian is 70 miles.

Roger. Understand. Thank you.

Roger. Roger, Frank. Little few thoughts on what is coming up now. The star sightings when Jim gets up; looks right now like we've had enough of the earth horizon, and everything looks real good; and we are ready to start on some lunar horizon sightings. So when Jim gets up, we will pass the flight plan update to him for a set of stars with the moon. Also, around 48, or after the star sightings is when we would like to see your next water dump come up. So, if you can, I recommend you get a little shuteye.

Roger. Have you got any answer about warming this place up a little bit?

Apollo 8, Houston.

Go ahead.

Apollo 8, this is Houston. I have got two methods for you to warm up the cabin there. The first one is a one-man job—about the best way would be to put one or both cabin fans ON and go full hot on the cabin heat exchanger. It'll be a fairly slow process of warming up, and you won't get a whole lot of heating. Your second method would be to adjust with the mixing valve your radiator OUT temperatures. This, again, is a two-man job, and you have to be pretty careful.

Roger. Well, Frank just went to bed, and Bill isn't up yet. I'll tell you what I'll do. I'll put on the fans and go HIGH on the cabin temperature and see what that does.

Okay, Jim. Remember, if you use just one fan, cover the other.

Houston, Apollo 8.

Apollo 8, Houston. Go.

Roger. If I use just one fan—You mentioned about covering the other one—are you sure that's true in this spacecraft?

Roger. That's affirmative.

I thought that was a BLOCK I problem.

Stand by, Jim. We'll recheck on that one.

Apollo 8, Houston. Did you get the word from Frank on the star-sighting plans?

Roger. I'll get out the flight plan if you have an update to it now, though, then we can update it right now.

Apollo 8, Houston.

Apollo 8, Houston.

Go ahead, Houston.

Roger. Are you ready for that flight plan update?

Roger. Go ahead.

Okay. At 47:15, delete the P23 sightings you're shoving there; and at 45 minutes—correction, 45 hours, add one additional set of sightings to each star.

Okay. You said at 45 hours we're going to add one set of sightings to each of the three stars. Is that correct?

That's affirmative. Everybody's real pleased with the earth horizon work; and as far as we're concerned, you can knock that off, and just add one set to each one of your lunar horizon stars at about 45. This 45-hour time also is not hard. You can shift it as your—as you desire.

Roger. I see things coming up now. Jerry, we're going to get the block data around 44, and we'll do alignment around 44:30 and then we'll go into cislunar navigation.

… at this distance —

Say again, Apollo 8.

… at this distance, there is no problem—there is no problem in seeing stars in the daylight at this distance.

Roger. Copy.

Apollo 8, Flight.

This is 8; go ahead.

Jim, are you talking about out the window or out any of the—or out the telescope?

I am looking out the window right now. I have the lights out in the spacecraft, the window covered where the sun is, and I can see the stars very well out the left rendezvous window.

Okay. I guess that window is still pretty good for you then.

That's right. It is one of the few that is. The center window, unfortunately, is all fogged over; it looks like a coating of ice or coating of heavy fog. Bill claims it is something else, though.

Roger. By the way, I am just getting OJT on this CAP COM job while Jerry is out of the room.

Well, we all have to learn sometime.

Yes sir.

You picked a midnight shift, I see.

Yes, it is turning out to be kind of quiet, too.

We like it that way.

Well, things will pick up here by tomorrow night, I think.

I believe you are right.

We're starting to show cabin temperature at 70, so it may be warming up for you.

Well, we can feel it warm up. I have both fans on and the—our gages indicate about 70.

Apollo 8, Houston.

Go ahead, Houston. Apollo 8 here.

Apollo 8. This is Houston, with a flyby, and a PC, pericynthian plus 2 hours maneuver PAD, when you are ready to copy.

Ready to copy.

Roger. Your TLI plus 44 maneuver PAD is good, requires no update. Flyby maneuver PAD follows: SPS/G&N 62954, minus 162, plus 129. Copy?

I am copying.

Roger. 060:59:48.08, plus 00953, plus 00578, minus 02076 000 000 000. Copy?

I am copying. Stand by. I am going to switch to OMNI antenna.

Roger. Standing by.

Okay. Go ahead.

Roger. HA is not applicable, plus 00202, 02356 022 02280 03 0393 310 013, up 048, right 35—I repeat, right 35. Copy?

Copy.

Roger. Plus 1418, minus 16505, 12904 36160 146:29:11; GDC align with your Sirius, Rigel set stars. 137 311 339; no ullage. Copy?

We are copying.

Roger. I have two comments. Number one; requires realignment to preferred REFSMMAT; two, raises perilune to 554 miles. Over.

Roger. I have it. Stand by for readback.

Roger. Standing by.

Flyby maneuver SPS/G&N 62954, minus 162, plus 129 060:59:48.08 953 578—those are 00953 and plus 000578—minus 02076 000 000 000, not applicable, plus 00202, 02356 022 02280 03 0393 310 013, up 048, right 35, plus 1418, minus 165 05 12904 36160 146:29:11, Sirius, Rigel 137 311 339, no ullage, requires realignment to preferred REFSMMAT, raises perilune to 554 nautical miles.

Roger. Jim, that is correct. Let me know when you are ready for your PC plus 2.

Okay. Let's go on PC plus 2.

Roger. Pericynthian plus 2, fast return, SPS/G&N 61503, minus 158, plus 131 071:36:12.44, plus 59578, minus 00086, minus 05287. Copy?

I am copying.