Spacelog Apollo 8

Roger. Thank you.

Apollo 8, Houston.

Go ahead, Houston. Apollo 8.

Okay, Apollo 8. I'd like to fill you in on things we're thinking about doing in the next couple of hours, first chance you get there.

Go ahead.

Okay. In relationship to the midcourse correction, we'd like to put that one off until about 11 hours, and it will be approximately a 25-foot-per-second burn. The reason we're delaying the burn time is to allow for better tracking as a result of the 7-1/2-foot per second you put in on the separation. We'd like to take a little more time to look at the tracking data. And the dispersions in your correction aren't going to be growing very fast here. What we'll do then is to delete the NAV sightings that occur about 09 plus 10 in the flight plan, and this will be getting us back on to the normal flight plan sequence. So we'll go ahead and finish the P23, and the 7-hour limit on that P23 is due to the range limits on this test. Over.

Is due to the what did you say?

The 7 hours on the P23 problem is due to the fact that we want to get these sightings in at a certain range. Over.

Roger. Understand.

If you have any comments on that proposal, why, go ahead and pass them down, and we'll feed them in.

No, I think that's fine. We need to get out of the suits and get something to eat here too.

Roger. Looks like we'll be back on the flight plan by 11 hours. We'll be holding up on the updates and PAD's because of the later burn.

Houston, Apollo 8.

Go ahead, Apollo 8.

Roger. I believe we have the S-IVB in sight. It would appear to be tumbling, and every once in a while, we are getting very bright reflections from it off the star, off the sun.

Houston, 8. Are you getting the data from the P23?

Stand by one.

Affirmative, Apollo 8.

Apollo 8, Houston.

Go ahead, Houston. Apollo 8.

Roger. We're copying your P23 progress. FAO advises that it looks like you are finishing your first star, and we'll need one more set on the second star, and this 7-hour cut-off isn't that firm, so we would like for you to go ahead and complete the second star if you can.

We're on the last setting of the second star right now.

Okay. Real fine. And we've got a—it's about time for a cryo fan cycle.

Okay. We'll do them one at the time for about 4 minutes on each of them.

Roger.

We've got the cryo fan on in H₂ tank number 1.

Roger, Bill.

Houston, Apollo 8. We've just got finished taking two sets, six sightings on Sirius, and one set on Procyon.

Roger. I understand that's six on Sirius and one on Procyon.

Two sets on Sirius, one set on Procyon.

Roger.

And we're maneuvering now to PTC attitude.

Oh. Roger, Apollo 8.

Apollo 8, when you get a chance down in the lower equipment bay, it looks like you're using the floodlights in the dim 2 position, and that one is a time-limited item. We would like for you to do your standard running in the dim 1 position. Over.

Roger. Just turned them off.

Okay. Anytime you have them on, running dim 1 position is preferred to the LEB.

Houston. We have the cryo fan on—the number 1 H₂ tank was on at 07:01. You can give us a hack when you want it—when you're ready for it to be turned off.

Wilco.

Okay, Apollo 8. You can terminate that one and go to the other tank.

Roger.

Okay. O₂ gage number 2 is on.

Roger.

Houston, Apollo 8.

Go ahead.

Are you having any problem on the ground with your COMM?

Negative. You're coming in loud and clear.

Okay. We seem to be breaking lock intermittently up here once in a while.