Spacelog Apollo 11

Hello, Apollo 11. Houston. We recommend you accept the NOUN 49. Continue through your sequence of sightings, and then we'll analyze the data afterwards. Over.

Houston, Apollo 11. Star 40 has just disappeared now in the sextant. Could the trunnion angle 47—something be a little high?

Stand by.

Hello, Apollo 11. Houston. We'd like you to press on to star 44. Over.

Yes. Roger. All right. How many marks have you recorded on star 40?

Stand by, Mike.

Okay.

11, Houston. We copied two good marks. Over.

Houston, Apollo 11.

Go ahead. Over.

Roger. Forty-four is just not bright enough for this. There's a reddish glow filling the black area of the sextant, and the star is lost somewhere in there, and I cannot see it.

Roger. Stand by. We'll come up with another star. Over.

Yes. I'd appreciate that.

Hello, Apollo 11. Houston. We'd like you to go on to star 45. Over.

Okay.

And, Mike, we think these large DELTA-R's, NOUN 49, you're getting is really meaningful since it's been way before TLI since we had a state vector update; and we think it's normal. Over.

Okay. Could be, Charlie. Some of the early markings, I might not have had precisely the substellar point. I think as time goes by they've been coming more accurate but old Enif here is just flat invisible.

Roger.

And, Houston, Apollo 11. Understand that the same three gimbal angles you gave me should be valid for star 45 as well. Is that affirmative?

I'm believe that's right. Stand by one. Over.

Okay.

That is negative. Stand by one.

Okay. Because there's quite a difference between the gimbal angles you have and the gimbal angles the program wants, but with inaccurate state vector, I'm inclined not to believe the program.

Stand by.

Houston, Apollo 11. LMP is back on the line.

Roger. Copy.

Read you five-by.

Roger. Same, Buzz. And, 11, the angles for you are 1978 for roll, 1285 pitch, 3400 yaw.

Okay. Just as a matter of comparison, P23 for this star would like to go to 235.66, 154.31, and 31365. Over.

Roger. We copy, 11. We understand that the program can give you almost an infinite combination of angles in P23, and it's not too unreasonable. If you'll stand by, we'll look at these that we see on the DSKY. Over.

Okay. Then in the meantime I'll just go ahead and maneuver to yours. 197.8, 128.5, and 340.0.

Houston, Apollo 11.

Go ahead. Over.

Okay, Charlie. If the attitude you gave me on star number 45—The reticle is off, I'd say, a good 30 degrees in roll, and the star is not in sight. Over.

Roger. Stand by.

I think something's wrong with those attitudes.

Hello, Apollo 11. Houston. I wondered if you have AUTO optics selected. Over.

That's affirmative.

Roger. Looks like to us we need a PROCEED, Mike, to get the sextant pointed at the star. Over.

Okay. Stand by.

11, Houston. Those shaft and trunnion angles were exactly what we were computing on the ground. Over.

Okay. I'm going to trim up the attitude here and give it another try.

Okay. I have this star loud and clear now, Charlie, so I might as well do a bunch of marks on this one to get a good horizon count.

Roger. Stand by.

It still looks like I'm far from the substellar point. However, I'm off quite a hit in roll.

Roger. We'd like you to mark right where it is now, Mike, and we'd like two sets of marks on this. Over.

Okay. Fine. But the reticle is not parallel to the horizon. I'd have to move off quite a hit in order to get it parallel to that.