The Gemini 8 Flight Journal

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Part 12: Approaching the Agena Journal Home Page Part 14: Station-keeping

Gemini 8

Part 13: Rendezvous

Corrected Transcript and Commentary Copyright © 2025 by Tracy L. Scott and W. David Woods. All rights reserved.
Last updated 2025-09-09
This is Gemini Control, Houston at 5 hours, 34 minutes into the flight of Gemini 8. The Agena currently showing 7 hours and 15 minutes of flight. Still no word from our crew members. All eyes here in the control center glued to our big displays and every ear listening for the first word. John Hodge now in contact with the flight controller on the CSQ. He has advised him we have no special instructions for the ship. Of course, we would like to hear as soon as possible what their status is as soon as CSQ acquires. That acquisition should come about 5 minutes from now. This is Gemini Control, Houston.
This is Gemini Control, Houston; 5 hours, 39 minutes into the flight. Flight Director John Hodge has advised the Coastal Sentry Quebec controller that he would like the range and range rate read out at approximately 30-second intervals when the CSQ acquires the two vehicles, which they should within a very few seconds. About five minutes from now, then; the Gemini 8 spacecraft will go into its Terminal Phase Final maneuver, which is programmed for 5 hours, 45 minutes, 37 seconds into the flight. This calls for a burn of 39.8 feet per second. And it will leave onboard some 458 pounds of fuel, according to our estimates here, which are based on telemetry.
Momentarily, we should have acquisition by the CSQ. Dick Gordon who backed up Dave Scott in the Gemini 8 preparations as the pilot crew member, has taken a station right on top of the Flight Director's console. He has occupied it for about the past two hours, keeping a very close plot with the values that Dave Scott called out earlier.
The Coastal Sentry Quebec controller advises they show a range of about 38,000 feet. They did acquire telemetry solid about 60 seconds ago.
Communications via Coastal Sentry Quebec
005:42:09 Armstrong: Okay. I just don't like the Out-Of-Plane, but...
005:42:11 CSQ CC: Gemini VIII, CSQ. We have nothing for you. We'll be standing by.
005:42:13 Scott: We're on the way.
005:42:16 CSQ CC: Roger.
005:42:18 Scott: 2½ miles out in Closed Loop.
005:42:21 CSQ CC: Roger.
The Coastal Sentry Quebec controller just advised the Gemini 8 spacecraft that they had nothing for them. They were standing by. This brought an acknowledgement from Neil Armstrong. And he said that they'd be back to them later.
The Coastal Sentry Quebec advises the range is now about 14,000 feet. And as soon as several people in this Control Center heard that reading their thumbs went up indicating that things were going along very well.
005:42:28 Scott: Is there any [garble]?
005:42:35 Armstrong: Okay. I'm losing my star background.
005:42:40 Scott: Okay. 2.1 miles, 45 feet per second - 49 feet per second.
005:42:43 Armstrong: You're - okay.
005:42:45 Scott: For this range you're in pretty good shape. You're almost nominal for this range.
Another range reading, about 12,000 - 12,100 feet.
005:42:52 Armstrong: Okay. I'm going to start braking down a little bit very shortly here because we're at 15K. We're inside 15K and I'd like to...
005:43:04 Scott: Yes, we're inside 15K.
005:43:08 Armstrong: How about if I brake off?
005:43:09 Scott: Yes, I agree.
005:43:25 Armstrong: Okay. Now give me a digital range for the remainder of 20 seconds.
005:43:37 Scott: Okay. You're 10,000 feet.
005:43:40 Armstrong: Okay. And Range Rate?
005:43:41 Scott: 44 feet per second, but let me get another readout on that.
005:43:44 Armstrong: Okay. I'm reading.
005:43:47 Scott: Ready.
005:43:59 Scott: 36 feet per second.
005:44:08 Armstrong: We'll have the horizon coming into view pretty soon and probably the sun in our eyes. In case that happens, I'll have to go to Full-Bright on the instruments.
005:44:16 Scott: That's okay. Go ahead.
All these values are coming from the ground station there at the Coastal Sentry Quebec. Five minutes [means hours] and 44 minutes. Range now quoted at 10,800 feet.
We're coming up on the Terminal Phase Final maneuver. John Hodge has just quered CSQ for another range reading.
005:44:25 Armstrong: Okay.
005:44:32 Scott: It looks pretty reasonable to me.
005:44:35 Armstrong: Anything you can tell now...
005:44:36 Scott: You're looking good. 8,100 feet, 39 feet per second, I get.
005:44:40 Armstrong: I'd better back off a bit.
005:44:41 Scott: Back off [garble].
005:44:42 Armstrong: Yes.
CSQ advises the range is now about 7,500 feet.
Range now 6,800 feet. We have an exceptionally clear signal, voice signal from the CSQ today.
Range now 6,100 feet.
005:45:01 Armstrong: Okay. 30 now.
005:45:08 Scott: Okay. Let me read out here.
005:45:20 Scott: 6,000 feet.
005:45:23 Armstrong: Okay.
005:45:25 Scott: 31 feet per second. A little high.
005:45:30 Armstrong: Okay. Let's back off a little more.
005:45:44 Scott: Okay.
A new range reading at 5,700 feet. The big question now is whether the distance will be closed while we're still within the Coastal Sentry Quebec range of acquisition. I would estimate we've probably got another two minutes. The next station, of course would be Hawaii. That station to acquire at 5 hours, 58 minutes into the flight. Some 10 minutes from now.
005:45:52 Scott: 5,500 feet.
005:45:59 Scott: 24 feet per second.
005:46:04 Armstrong: Seems the minimum. Pretty good now.
005:46:06 Armstrong: Where did you get the Range Rate?
005:46:07 Scott: 24 feet per second.
005:46:08 Armstrong: Pretty good.
005:46:11 Armstrong: I'll be backing down a little more now.
And now we have another reading on range of 4,900 feet. And expect to lose signal any second. The pilots have not had any voice conversation with CSQ during this pass but that is understandable, since they are both very busy fellows at this Terminal Phase.
005:46:23 Scott: Okay. 22 feet per second.
005:46:25 Armstrong: [Garble.]
005:46:32 Scott: I can't.
005:46:35 Armstrong: Can't you?
005:46:36 Scott: No. I'm busy.
005:46:49 Scott: Okay. 4,500 feet.
005:46:52 Armstrong: Okay.
005:46:59 Scott: 17 feet per second.
005:47:11 Scott: 3,700 feet.
005:47:13 Armstrong: What was the Range Rate?
005:47:18 Scott: Coming up.
005:47:19 Scott: 19 feet per second.
005:47:20 Armstrong: Okay. I'm going to back off a little more.
005:47:22 Scott: Okay.
005:47:44 Armstrong: Out-Of-Plane seems to be drifting back a little bit.
005:47:49 Scott: Okay. You're 3,400 feet.
005:47:59 Scott: 17 feet per second.
005:48:16 Armstrong: I'm losing my Range Rate. It's [garble].
005:48:20 Scott: You're 2,880 feet.
005:48:32 Scott: You did lose your Range Rate a bit, there.
005:48:42 Scott: [Garble.]
005:48:44 Armstrong: I can see the back lights, now.
005:48:47 Armstrong: 2,500 feet.
005:48:50 Scott: Yes. So can I.
005:48:56 Armstrong: Range Rate?
005:48:58 Scott: 2,400 feet.
005:48:59 Scott: Range Rate's 10 feet per second.
005:49:16 Scott: You're now at 2,200 feet.
005:49:27 Armstrong: Range Rate?
CSQ now advises they have lost signal with the spacecraft. Their last range reading at loss of signal was 2,100 feet, 2,100 feet from the Agena, All systems aboard both the Agena and the spacecraft performing very nicely. We should reacquire the spacecraft in perhaps 8 minutes from Hawaii and will be back to you at that time. This is Gemini Control, Houston.
005:49:42 Armstrong: Range Rate?
005:49:44 Scott: 1,900 feet.
005:49:59 Scott: 10 feet per second.
005:50:06 Armstrong: Put in a little [garble] to the left.
005:50:18 Armstrong: [Garble.]
005:50:23 Armstrong: Back off now.
005:50:25 Scott: 1,680 feet.
005:50:28 Scott: 7 feet per second.
005:50:30 Armstrong: Okay.
005:50:37 Scott: Chase it down a little bit.
005:50:40 Scott: Gad: That's just amazing! [Garble] camera is running.
005:50:44 Armstrong: [Garble.]
005:50:48 Scott: [Garble.]
005:51:30 Scott: Back to work.
005:51:40 Scott: You're about 1,100 feet.
005:51:47 Scott: 5 feet per second.
005:52:32 Scott: You're 900 feet.
005:52:35 Scott: 5 feet per second.
005:53:01 Armstrong: That's just unbelievable! Unbelievable!
005:53:08 Armstrong: I can't believe it!
005:53:10 Scott: Yes, I can't either. Outstanding Job, Coach!
005:53:13 Armstrong: Way to go, Partner!
005:53:16 Scott: You did it, boy! You did a good job!
005:53:17 Armstrong: It takes two to tango.
005:53:20 Scott: Say again?
005:53:21 Armstrong: It takes two of us.
005:53:25 Scott: Okay. We're at [garble].
005:53:27 Armstrong: Back off.
005:53:32 Scott: Okay. We're 700 feet.
005:53:42 Scott: 11 feet per second. Let me re-do that one.
005:53:48 Scott: I like 7. You buy 7 feet per second?
005:53:52 Armstrong: Yes.
005:53:56 Scott: Boy! Look at that sucker!
005:54:06 Scott: That's beautiful!
005:54:07 Armstrong: See the dipole?
005:54:08 Scott: Do I ever: I'll say I see everything on that fellow!
005:54:17 Scott: I've got 18 pictures.
005:54:18 Scott: I don't have the range sight on. Hope I'm hitting them.
005:54:20 Scott: 250 and 11.
005:54:25 Scott: Got yours set?
005:54:28 Armstrong: [Garble.]
005:54:29 Armstrong: [Garble.]
005:54:30 Scott: Yes.
005:54:32 Armstrong: I'm in 25. [Garble].
005:54:34 Scott: No! Heck no!
005:54:36 Scott: Dang target. You should be et infinity, 1/200 and f:16.
005:54:54 Scott: No, we don't have a spot in here. I guess we'll have plenty of time to do that.
005:55:04 Armstrong: Okay. Now I'll get back to work.
005:55:11 Scott: 240 feet [garble].
005:55:23 Scott: 5 feet per second we're still getting.
005:55:25 Armstrong: Okay. [Garble].
005:55:37 Armstrong: I guess we could turn the ACQ lights off.
005:55:42 Scott: Yes. I'll go back to the Check List.
005:55:52 Scott: Okay. 250 coming up.
005:55:57 Scott: Got a Map?
005:56:01 Armstrong: Okay. Now 230.
005:56:02 Scott: Okay.
005:56:05 Scott: UHF Disabled. You agree?
005:56:08 Armstrong: Yes.
005:56:10 Scott: Got a Map?
005:56:12 Lovell: Gemini VIII, Gemini VIII, this is Houston CapCom. Standing by for any Rendezvous remarks. Over.
005:56:19 Scott: You tell them.
005:56:23 Armstrong: Flight Houston, this is Gemini VIII. We're station-keeping on the Agena at about 150 feet.
005:56:30 Scott: [Garble.]
005:56:35 Scott: Yaw left [garble].
005:56:37 Scott: That's good.
005:56:42 Scott: Right. Now I'll get a better picture.
005:56:47 Scott: Got the spotmeter over there anywhere handy?
005:56:50 Armstrong: [Garble]. It's supposed to be at the back of the box here.
005:56:57 Scott: Okay. Stay on the Agena. Don't sweat this one. We'll be around for a long time yet.
005:57:08 Scott: Okay. What does your Propellant Quantity read now?
005:57:11 Armstrong: 55 percent.
005:57:13 Scott: That's nice.
005:57:20 Armstrong: Gemini VIII is station-keeping on the Agena.
005:57:32 Scott: Back to the Flight Plan. We just started today.
005:57:37 Armstrong: That's right.
005:57:14 Lovell: Gemini VIII, this is Houston. You are unreadable. We will stand by for Hawaii acquisition.
005:57:38 Armstrong: Okay. We have here - I guess I can turn the radar to Standby.
005:57:42 Scott: Yes, radar Standby.
005:57:54 Armstrong: [Garble.]
005:58:13 Scott: 1/200 and f:16, it says in here.
005:58:20 Scott: We should have been there at 5:42. We were there by 5:58, so we're late - by gosh! 16 minutes.
Communications via Hawaii, US
005:58:58 Hawaii CC: Gemini VIII, Hawaii.
005:59:01 Armstrong: Go ahead.
005:59:03 Hawaii CC: Roger. How are you doing?
005:59:04 Armstrong: Station-keeping at about 150 feet.
005:59:08 Hawaii CC: Roger. Have you transmitted UHF Disable?
005:59:11 Armstrong: That is correct.
005:59:12 Hawaii CC: Roger. We have an SPC load to transmit. Would you Enable it, please?
005:59:17 Armstrong: Sure will.
This is Gemini Control, Houston... [pause] and there is the word we have been waiting for. I paused because just as I opened the announcement, Hawaii called them. Neil Armstrong came back that we are station keeping, we are about 150 feet apart. 150 feet apart in their presently, perhaps 1,000 west of Hawaii. A minute or two ago, Jim Lovell attempted to raise the spacecraft through the Range Tracker, a ship parked 1,500 west of Hawaii. We could barely hear Neil acknowledging the call and could not read his voice, It is quite clear now and all he has said in response to the Hawaii Capsule Communicator's question: "How is it going?". "We are 150 feet apart and station-keeping." They should advise any minute about their docking plans as to when we can expect that to occur.
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Part 12: Approaching the Agena Journal Home Page Part 14: Station-keeping