WEBVTT 00:02.039 --> 00:05.300 Again , the areas in black are the 00:05.559 --> 00:07.599 total area covered , uh , which we 00:07.599 --> 00:10.560 obtained , uh , from the mission , and 00:10.560 --> 00:13.800 the areas in red are the pieces which 00:13.800 --> 00:16.799 we missed due to the , uh , deletion of 00:16.799 --> 00:20.764 the plane change and the Uh , day early 00:20.764 --> 00:22.924 return . This little piece down here 00:22.924 --> 00:25.454 was an oblique pass which we had 00:25.454 --> 00:27.655 planned with the hand camera , uh , 00:27.684 --> 00:30.084 would have taken place on Rev 72 in 00:30.084 --> 00:32.306 order to get photographs of ascending , 00:32.306 --> 00:34.924 which is a , a , an area of particular 00:34.924 --> 00:37.930 interest to the geologists . Uh , so 00:37.930 --> 00:40.310 you can see that we did lose some data . 00:40.950 --> 00:43.172 On the other hand , we did pick up some 00:43.172 --> 00:45.506 data that we would not have gotten , uh , 00:45.506 --> 00:47.849 and I think overall the effectiveness 00:47.849 --> 00:51.169 of the , of the coverage was about 90% 00:51.169 --> 00:53.340 of what we had hoped for , uh , 00:53.369 --> 00:57.349 pre-emission . I really want to express 00:57.349 --> 01:00.819 the Uh , thanks of the photo team , uh , 01:00.830 --> 01:03.630 to the flight planners here and also to 01:03.630 --> 01:06.309 Ken for his operation of the cameras uh 01:06.309 --> 01:08.550 during the mission . I know that uh it 01:08.550 --> 01:11.650 was very confusing to be continually 01:11.910 --> 01:14.190 changing the flight plan and uh Ken 01:14.190 --> 01:16.301 probably We wondered what the hell we 01:16.301 --> 01:18.412 were doing with all these on-offs and 01:18.412 --> 01:21.459 so on . Uh , but , uh , uh , really , I 01:21.459 --> 01:24.180 think we did , uh , a very effective 01:24.180 --> 01:26.500 job of recovering almost all of the 01:26.500 --> 01:29.819 data that we had planned , uh , for the 01:29.819 --> 01:32.260 mission . Uh , may I have the , the 01:32.260 --> 01:36.220 next slide , please ? Uh , this is a 01:36.360 --> 01:39.550 diagram showing what the Apollo 15 01:39.550 --> 01:42.550 coverage was like . This is the planned 01:42.550 --> 01:46.239 coverage for the 16 mission , and in 01:46.239 --> 01:48.461 the dotted line is the planned coverage 01:48.461 --> 01:50.628 for the 17 mission . The only reason I 01:50.628 --> 01:52.850 show this is to indicate that the areas 01:52.850 --> 01:54.517 where we did lose data , uh , 01:54.559 --> 01:57.879 unfortunately are in the areas that 01:57.879 --> 02:01.040 will . were not covered by 15 and will 02:01.040 --> 02:03.940 not be covered by 17 , so that the 02:03.940 --> 02:06.660 losses , although small , were real . 02:07.319 --> 02:11.149 the next slide . Ken , 02:11.240 --> 02:14.240 during the film recovery EVA , you 02:14.240 --> 02:16.407 reported that the stellar camera glare 02:16.407 --> 02:18.462 shield was hung up on the handrail . 02:18.759 --> 02:22.559 I'm not 100% clear as to exactly 02:22.559 --> 02:25.119 what that situation was . This is the 02:25.119 --> 02:27.720 stellar camera glare shield , and this 02:27.720 --> 02:29.831 is a little cover that comes down and 02:29.831 --> 02:32.039 covers that when the when the mapping 02:32.039 --> 02:34.720 camera is retracted . Maybe you've 02:34.720 --> 02:36.776 discussed this with the other people 02:36.776 --> 02:39.009 here . At the center , but for my own 02:39.009 --> 02:40.953 information , I would like to know 02:40.953 --> 02:43.176 whether this is the cover that was hung 02:43.176 --> 02:46.229 up or this cover . Both of them , the 02:46.229 --> 02:48.429 shield at the fore and that one , this 02:48.429 --> 02:50.707 one , no , the first one you looked at , 02:50.707 --> 02:52.873 yeah , that was sticking up . That was 02:52.873 --> 02:54.985 sticking up , uh huh , yeah , but the 02:54.985 --> 02:57.207 The tip out here was mashed against the 02:57.207 --> 02:59.373 handrail , mashed against the handrail 02:59.373 --> 03:01.540 out along here . Yeah , the rail isn't 03:01.540 --> 03:03.429 in this picture . The rail is not 03:03.429 --> 03:05.651 installed . That's right . And this lip 03:05.651 --> 03:07.818 was up against it and bent back out of 03:07.818 --> 03:09.985 the way . I see . It was not in a full 03:09.985 --> 03:12.096 extended position . It looked like it 03:12.096 --> 03:14.096 was a partial extension . Could you 03:14.096 --> 03:16.151 tell whether this was bent , whether 03:16.151 --> 03:18.373 this rail was bent , this extend rail ? 03:19.300 --> 03:21.411 No , but I think we have a photo that 03:21.411 --> 03:23.522 probably tell you that . Uh , I don't 03:23.522 --> 03:25.689 remember . The , the end of the shield 03:25.689 --> 03:27.911 was bent . Now whether that rail , no . 03:27.911 --> 03:30.022 He , yeah , in the next , in the next 03:30.022 --> 03:29.940 section of the accordion , that one was . 03:30.830 --> 03:32.830 Whether that rail itself was bent I 03:32.830 --> 03:35.550 didn't notice . The implication of 03:35.550 --> 03:37.869 course is that if this had happened 03:37.869 --> 03:39.925 early in the mission and this shield 03:39.925 --> 03:42.147 were bent down , we might get excessive 03:42.147 --> 03:44.589 light into the stellar camera and our 03:44.589 --> 03:48.369 background density would be would be 03:48.369 --> 03:50.536 higher than we expected . We might not 03:50.536 --> 03:53.300 see as many stars . The other 03:53.300 --> 03:56.139 indication of malfunction that we had , 03:56.160 --> 03:58.960 of course , was in the exposure control 03:58.960 --> 04:02.339 on the pan camera , and that 04:03.080 --> 04:05.720 would indicate that the pictures away 04:05.720 --> 04:07.998 from the terminator may be overexposed . 04:08.440 --> 04:10.718 That situation is also being looked at , 04:10.718 --> 04:12.884 and again we're going to talk about it 04:12.884 --> 04:14.773 this afternoon before we actually 04:14.773 --> 04:16.996 process the film . Uh , yeah , the next 04:16.996 --> 04:20.109 slide . This is the information which I 04:20.109 --> 04:23.229 have with regard to the laser altimeter 04:23.229 --> 04:26.509 operation . The first row across here 04:26.509 --> 04:28.676 is what the nominal mission would have 04:28.676 --> 04:32.549 been , and the second row is the actual 04:32.549 --> 04:35.709 results from the Apollo 16 . We had 04:35.709 --> 04:38.098 planned a total of 20 hours and a few 04:38.098 --> 04:40.209 minutes of operating time . We've got 04:40.209 --> 04:42.908 14.5 hours , so that we are down about 04:42.908 --> 04:46.459 25% in the total operating time . 04:47.600 --> 04:50.920 This is the total revolutions in 04:50.920 --> 04:54.079 longitude that we had planned 10.3 and 04:54.079 --> 04:56.390 we got 7.5 , so again we're down about 04:56.390 --> 04:59.649 25% in that regard . The 05:00.959 --> 05:04.079 total number of firings , 3283 and 05:04.079 --> 05:08.010 2106 is the actual number that was 05:08.010 --> 05:11.320 recorded , so we are down nearly 05:11.320 --> 05:15.040 30% in the total number of 05:15.040 --> 05:18.809 firings . Also the The number of valid 05:18.809 --> 05:21.750 elevation readings that we got was 05:21.750 --> 05:24.589 appreciably less than the total number 05:24.589 --> 05:28.510 of firings , so the actual mission in 05:28.510 --> 05:32.070 terms of altimeter observations gave us 05:32.070 --> 05:34.309 a little bit less than half of what we 05:34.309 --> 05:38.010 had actually planned . That's really 05:38.010 --> 05:41.690 not as serious a shortfall as it 05:41.690 --> 05:44.609 sounds just from the numbers because 05:44.609 --> 05:46.489 the readings were quite well 05:46.489 --> 05:48.545 distributed throughout the mission . 05:48.559 --> 05:51.079 The general operation that we saw on 05:51.079 --> 05:54.559 the altimeter , the first several revs 05:54.559 --> 05:56.615 were completely nominal . All of the 05:56.615 --> 05:58.989 elevation readings were valid . Then it 05:58.989 --> 06:02.519 began to fall off about 75% , 65% , and 06:02.519 --> 06:05.709 down to about 60% , except on the last 06:05.709 --> 06:08.369 data pass on RV 62 , where it was only 06:08.369 --> 06:11.600 about 10% effective . 06:14.730 --> 06:16.839 Generally what we seem to observe is 06:16.839 --> 06:18.839 that there would be one good shot , 06:18.839 --> 06:21.061 then one bad shot , then one good , one 06:21.061 --> 06:23.228 bad , and then maybe several good ones 06:23.228 --> 06:26.869 in a row . We can talk about the 06:26.869 --> 06:29.950 reason for that , but that's more 06:29.950 --> 06:32.390 appropriately covered in the systems 06:32.390 --> 06:35.350 review tomorrow . The effect that it 06:35.350 --> 06:38.440 will have on the data is simply to give 06:38.440 --> 06:41.899 us Larger spacing between data points 06:42.290 --> 06:45.339 so far as its effect on the reduction 06:45.339 --> 06:47.228 of the photography is concerned , 06:47.299 --> 06:50.019 that's absolutely inconsequential so 06:50.019 --> 06:53.619 far as its effect on the correlation 06:53.619 --> 06:55.786 between the tracking and gravity . And 06:56.065 --> 06:59.904 the profiles , it's a little bit more 06:59.904 --> 07:01.960 of a concern . They do have a little 07:01.960 --> 07:04.015 bit more smoothing to do between the 07:04.015 --> 07:05.793 data points that they got , but 07:05.793 --> 07:07.682 essentially I don't think that it 07:07.682 --> 07:09.348 really hurts us so far as the 07:09.348 --> 07:11.460 scientific return from the mission is 07:11.460 --> 07:14.945 concerned . I would like to say just a 07:14.945 --> 07:17.704 word or so about the utilization of the 07:17.704 --> 07:20.904 photography . It has been 07:20.904 --> 07:23.864 proceeding much more slowly than I had 07:23.864 --> 07:26.910 anticipated . In reducing the pictures 07:26.910 --> 07:29.630 from Apollo 15 , however , the work 07:29.630 --> 07:32.630 which is being done by the ACIC in St . 07:32.790 --> 07:35.390 Louis is indicating that the 07:35.390 --> 07:37.549 photography , photographic reduction 07:37.549 --> 07:41.279 will provide positional coordinates of 07:41.279 --> 07:44.369 features on the lunar surface with the 07:44.369 --> 07:47.549 accuracy of 10 to 12 m in position and 07:47.549 --> 07:49.640 in elevation . And that seems to 07:49.640 --> 07:52.119 coincide very well with what we had 07:52.119 --> 07:55.320 predicted pre-mission . So uh we are 07:55.320 --> 07:57.264 quite confident that uh that we're 07:57.264 --> 07:59.431 getting very good information from the 07:59.431 --> 08:03.260 pictures in that regard . The tracking 08:03.260 --> 08:07.260 data generally is consistent 08:07.260 --> 08:09.482 within an orbital pass , but we do find 08:10.260 --> 08:14.100 discrepancies of up to 11 kilometer 08:14.100 --> 08:16.429 between adjacent photographic passes , 08:16.739 --> 08:19.260 so that the reduction of the 08:19.260 --> 08:21.660 photographs is giving us a much better 08:21.660 --> 08:25.260 tie between orbital passes than we get 08:25.260 --> 08:28.220 from the from the tracking data itself . 08:29.049 --> 08:31.609 Consequently , we do expect eventually 08:31.609 --> 08:33.590 to come up with a , an internally 08:33.590 --> 08:35.312 consistent coordinate system , 08:35.330 --> 08:37.441 reference system , figure of the moon 08:37.441 --> 08:39.608 with an accuracy on the order of 12 to 08:39.608 --> 08:42.570 15 m . Uh , that's uh highly gratifying 08:42.570 --> 08:46.330 to me . So far as the pan camera 08:46.330 --> 08:49.090 utilization is concerned , there have 08:49.090 --> 08:52.469 been some map compilations done . 08:53.330 --> 08:56.250 The indicated precision of those is on 08:56.250 --> 08:59.330 the order of 3 m , which again is about 08:59.330 --> 09:01.679 what we had expected , but that is a 09:01.679 --> 09:03.735 precision and not an accuracy number 09:03.735 --> 09:06.210 because of the geometric problems with 09:06.210 --> 09:08.690 the pan camera photography . However , 09:08.840 --> 09:10.840 so far as the resolution of the pan 09:10.840 --> 09:13.007 camera is concerned , that has held up 09:13.007 --> 09:15.340 to just about what we had expected , uh , 09:15.570 --> 09:18.669 from 1.5 to 3 m at the 09:19.289 --> 09:21.456 sub-vehicle point and decreasing up to 09:21.456 --> 09:24.140 about 5 to 6 m at the limits of the of 09:24.140 --> 09:27.570 the film . So , so far as 09:28.510 --> 09:31.289 our indications at the moment are that 09:31.289 --> 09:33.349 the results from 16 are quite 09:33.349 --> 09:35.590 satisfactory , we do have these 09:35.590 --> 09:38.349 problems that we have to resolve in the 09:38.349 --> 09:41.309 processing of the film , and once that 09:41.309 --> 09:43.142 is done , we will be able to say 09:43.142 --> 09:45.420 exactly what we did obtain . But again , 09:45.420 --> 09:47.365 I want to express the photo team's 09:47.365 --> 09:49.531 thanks to you , particularly Ken , for 09:49.531 --> 09:53.330 the time and attention that 09:53.330 --> 09:56.369 you gave to the camera operation and 09:56.369 --> 09:58.369 the results that we have obtained . 09:59.409 --> 10:01.576 Thanks for any questions . Could you , 10:02.210 --> 10:04.650 do you have a plot of the altimetry ? 10:05.000 --> 10:07.167 You know , last time someone had drawn 10:07.167 --> 10:09.630 up a rough hand sketch of . Of the 10:09.630 --> 10:11.809 altimetry did anyone do that this time 10:11.809 --> 10:14.142 profiles ? Yes sir . No , I don't , Ken . 10:14.142 --> 10:16.142 I think maybe uh Shogren has one of 10:16.142 --> 10:18.659 those , uh , and I don't . Is he here ? 10:20.309 --> 10:22.420 Do you have a plot ? Yeah , I thought 10:22.420 --> 10:24.950 you had one . He'll show that these are 10:24.950 --> 10:27.172 particles that you found in the mapping 10:27.172 --> 10:30.539 camera that . Is that handfuls or a 10:30.539 --> 10:34.510 couple of shavings or I don't know 10:34.510 --> 10:38.190 how extensive they were . They 10:38.190 --> 10:42.070 were enough to concern the people 10:42.070 --> 10:46.030 in the processing lab . All I 10:46.030 --> 10:48.030 know , that's about all that I know 10:48.030 --> 10:50.030 about it . We're supposed to have a 10:50.030 --> 10:51.974 review of that this afternoon . It 10:51.974 --> 10:54.141 could have very serious implications , 10:54.141 --> 10:58.109 obviously . One thing that I seem 10:58.109 --> 11:02.109 to recall from during the mission 11:02.109 --> 11:05.830 is that we had apparently more film 11:05.830 --> 11:08.549 left for post-TEI photography than we 11:08.549 --> 11:11.380 had anticipated . And what that could 11:11.380 --> 11:13.539 mean , of course , is that the camera 11:13.539 --> 11:15.761 was not passing film when we thought it 11:15.761 --> 11:17.761 was and things were being chewed up 11:17.761 --> 11:20.179 pretty badly inside . So we're going to 11:20.179 --> 11:22.419 have to look that over very carefully 11:22.419 --> 11:24.619 before we go ahead with the processing 11:24.619 --> 11:28.219 of the film . We expect the camera 11:28.219 --> 11:31.739 contractor to Look at the shavings and 11:31.739 --> 11:34.017 tell us where he thinks they came from , 11:34.017 --> 11:36.128 and that may give us a better clue as 11:36.128 --> 11:38.350 to what they actually are . Do you have 11:38.350 --> 11:40.350 a processing schedule yet ? I guess 11:40.350 --> 11:42.406 it's all in advance to to hold until 11:42.406 --> 11:44.628 this afternoon , after our meeting this 11:44.628 --> 11:46.795 afternoon , assuming you're determined 11:46.795 --> 11:48.850 to go ahead and develop it , will it 11:48.850 --> 11:51.017 take you 3 or 4 days to process . Uh , 11:51.017 --> 11:53.183 I think the , the anticipated schedule 11:53.183 --> 11:56.590 was to have the original film processed 11:56.590 --> 11:58.650 within this week and all of the 11:58.650 --> 12:01.190 duplicate copies within 4 weeks and 12:01.190 --> 12:04.200 distributed is the accuracy . 12:05.640 --> 12:09.119 The least count of the altimeter 12:09.119 --> 12:12.919 is 1 m . The accuracy 12:12.919 --> 12:16.820 is dependent pretty much upon 12:16.820 --> 12:18.719 the slope in the area which is 12:18.719 --> 12:22.719 illuminated and a little bit on 12:22.719 --> 12:24.497 the albedo in the area which is 12:24.497 --> 12:27.080 illuminated . In general , I think it's 12:27.080 --> 12:29.239 fair to say that the reading that we 12:29.239 --> 12:31.406 get from the altimeter will be correct 12:32.280 --> 12:33.880 to within 3 to 5 m . 12:37.960 --> 12:40.016 Have you figured out what to do with 12:40.016 --> 12:42.182 the pan camera for processing ? you've 12:42.182 --> 12:45.710 got a correction for the closure . I 12:45.710 --> 12:47.877 don't know what has been figured out . 12:47.877 --> 12:50.043 We had a group working on it last week 12:50.043 --> 12:52.154 and they're going to give us a report 12:52.154 --> 12:54.377 right after this meeting . We'll decide 12:54.377 --> 12:52.840 what to do . 13:00.010 --> 13:02.270 Uh , they think that there will be some 13:02.270 --> 13:04.492 slight loss near the terminator if they 13:04.492 --> 13:06.880 would do that . Um , in other words , 13:06.890 --> 13:09.489 that they can handle the over explosion . 13:10.469 --> 13:13.869 But at some penalty where we have 13:13.869 --> 13:16.150 minimum rights and the question as to 13:16.150 --> 13:18.261 whether there's anything else you can 13:18.261 --> 13:20.428 say about that penalty like cutting it 13:20.428 --> 13:23.739 up . Which is not fun . The situation 13:23.739 --> 13:26.090 is really that near the terminator , 13:26.390 --> 13:28.669 the pictures are underexposed anyhow 13:28.669 --> 13:30.669 because we can't open the slit wide 13:30.669 --> 13:32.725 enough and so on , so the camera was 13:32.725 --> 13:35.469 wide open at the terminator , but it 13:35.469 --> 13:37.780 was open wider than it should have been 13:37.780 --> 13:40.002 when we were away from the terminator , 13:40.002 --> 13:42.113 so that the Terminator pictures are a 13:42.113 --> 13:44.113 little bit underexposed , then they 13:44.113 --> 13:46.289 become properly exposed and after that 13:46.830 --> 13:48.330 they will be overexposed . 13:50.760 --> 13:52.649 So what we would really like , of 13:52.649 --> 13:54.960 course , is a variable uh processing uh 13:54.960 --> 13:57.016 through each photo path , but that's 13:57.016 --> 13:59.127 probably not a feasible thing to even 13:59.127 --> 14:00.127 contemplate . 14:03.799 --> 14:07.570 Thanks , Fred . will be the particles 14:07.570 --> 14:09.739 and fields of the subsatellite , and I 14:09.739 --> 14:12.017 think Jim McCoy is going to cover that . 14:12.017 --> 14:15.119 Is he here ? You know , Oh , there he 14:15.119 --> 14:16.119 is . 14:26.530 --> 14:28.697 We got a mic right over there . Yeah . 14:28.697 --> 14:31.119 I don't have anything at all . Yeah , 14:31.549 --> 14:33.716 they'll they'll project it up there in 14:33.716 --> 14:35.771 the back booth if you want to . uh , 14:37.340 --> 14:39.451 where's where's Baldwin would , could 14:39.451 --> 14:41.340 you get this projected up there ? 14:53.809 --> 14:56.390 I guess uh Michael 15:08.280 --> 15:12.159 OK , can you hear me OK ? OK , uh . 15:13.369 --> 15:17.299 Quickly the subsatellite was 15:17.299 --> 15:21.080 deployed successfully . Our spin rate 15:21.080 --> 15:24.830 was nominal , about 58 2nd , spin 15:24.830 --> 15:27.760 period . We want 5 plus or minus a 15:27.760 --> 15:31.229 couple . Uh , the attitude was good . 15:31.919 --> 15:33.586 Uh , according to preliminary 15:33.586 --> 15:35.752 indication from the sun sensor , we're 15:35.752 --> 15:37.975 have a couple of degrees , uh , tip off 15:37.975 --> 15:39.863 from the ecliptic , which is well 15:39.863 --> 15:43.750 within the limits we needed . The 15:43.750 --> 15:45.750 operation of all of the uh 15:45.909 --> 15:48.799 electrostatic analyzers and both solid 15:48.799 --> 15:52.780 state telescopes is good . Uh , we 15:52.780 --> 15:54.880 don't seem to have the noise problem 15:55.619 --> 15:58.140 that we had on Apollo 15 and a couple 15:58.140 --> 16:01.320 of the analyzers , and we've 16:01.979 --> 16:04.146 gotten rid of our accumulator counting 16:04.146 --> 16:06.257 error that was characteristic of 15 . 16:06.419 --> 16:08.641 It's given us some problems in our data 16:08.641 --> 16:12.020 analysis now from that satellite . I'll 16:12.090 --> 16:15.830 OK , that's , The quick look uh 16:16.119 --> 16:18.969 results on our first magnetotail pass 16:19.119 --> 16:21.359 indicated again the uh presence of 16:21.359 --> 16:25.239 these rather , uh , unexpected , rather 16:25.239 --> 16:28.580 high uh fluxes of low energy protons 16:29.080 --> 16:31.960 which have also been seen now with a 16:31.960 --> 16:35.440 new IM Series I satellite 16:35.440 --> 16:39.099 experiment too . And on this 16:39.099 --> 16:41.619 magnetotail pass we appear to have the 16:41.619 --> 16:45.299 remnants of a small solar event . 16:46.330 --> 16:49.140 Uh , the form of some high energy solar 16:49.140 --> 16:51.840 cosmic ray electrons and protons around 16:52.659 --> 16:55.960 which should prove , uh , interesting 16:55.960 --> 16:57.738 for our shadow interpretation , 16:58.010 --> 17:00.380 particularly on electric fields in the 17:00.380 --> 17:04.339 magnetotail . Beyond 17:04.339 --> 17:06.839 that , if they have those slides there , 17:07.140 --> 17:09.859 I'd like to briefly describe some of 17:09.859 --> 17:12.099 the results we got from Apollo 15 , 17:13.260 --> 17:15.427 which would hope to be similar to this 17:15.427 --> 17:18.800 one . I Our 17:18.800 --> 17:21.979 primary experiment was to 17:22.280 --> 17:25.619 examine . Particle shadow 17:25.619 --> 17:29.069 configurations in the magnetotail that 17:29.069 --> 17:31.291 while we're passing through this region 17:31.291 --> 17:34.709 back here where we are in the Earth's 17:34.709 --> 17:38.699 magnetic field . And uh use that to 17:38.699 --> 17:42.180 examine the uh question of openness and 17:42.180 --> 17:45.719 access through the magnetotail to the 17:45.719 --> 17:49.069 magnetic field lines and uh ultimately 17:49.069 --> 17:53.000 to the Van Allen belts . Where , uh , 17:53.420 --> 17:55.609 theory generally holds that , uh , the 17:55.609 --> 17:57.720 Van Allen radiation must somehow come 17:57.720 --> 18:00.920 in and then be trapped and accelerated . 18:02.290 --> 18:05.510 The degree of connection back here with 18:05.510 --> 18:08.109 the interplanetary field has been in 18:08.109 --> 18:11.349 quite a bit of question . And briefly 18:11.349 --> 18:14.430 stated the Apollo 15 results indicate 18:14.430 --> 18:17.189 pretty clearly that at least most of 18:17.189 --> 18:20.670 the time at the uh latitudes where we 18:20.670 --> 18:22.910 passed through the tail , of course we 18:22.910 --> 18:26.510 only have a couple of passes . That uh 18:26.510 --> 18:29.989 these uh field lines are in fact open 18:29.989 --> 18:32.589 out here , connect directly into the 18:32.589 --> 18:35.949 interplanetary field and have direct 18:35.949 --> 18:39.109 access of uh solar cosmic ray particles . 18:41.689 --> 18:45.380 We have also observed the existence 18:45.380 --> 18:49.290 of a plasma sheet which is known to 18:49.290 --> 18:52.069 form in closer to the Earth to extend 18:52.530 --> 18:54.430 out to the moon's distance . 18:56.189 --> 18:58.349 And , uh , uh , at least a couple of 18:58.349 --> 19:01.109 occasions we have observed , uh , cross 19:01.280 --> 19:03.770 tail electric fields which are 19:04.510 --> 19:07.750 important to theoretical models , uh . 19:08.859 --> 19:12.339 Accounting for uh aurora and for 19:12.339 --> 19:14.390 acceleration of particles into the 19:14.869 --> 19:18.859 radiation belts . An unexpected 19:18.859 --> 19:22.140 observation which we 19:22.180 --> 19:25.939 found interesting was 30 KV 19:25.939 --> 19:29.020 or thereabouts protons in very large 19:29.020 --> 19:31.339 numbers which we observed quite 19:31.339 --> 19:33.780 frequently back in the magnetotail and 19:33.780 --> 19:36.599 also observed outside the magnetotail 19:36.599 --> 19:40.500 in very similar fluxes . Our first 19:40.500 --> 19:42.819 feeling was that these must also be 19:42.819 --> 19:43.239 some . 19:46.130 --> 19:49.010 Component of the solar cosmic ray 19:49.010 --> 19:51.739 proton spectrum . They're , of course , 19:51.790 --> 19:55.790 very low energy uh . would be 19:55.790 --> 19:58.270 stopped by even the thinnest piece of 19:58.270 --> 20:02.060 material . But the uh numbers of them 20:02.319 --> 20:04.719 and the consistency of their flux 20:04.719 --> 20:08.280 densities make them uh very attractive 20:08.280 --> 20:11.000 as probably being indicative , quite 20:11.000 --> 20:13.199 indicative of uh the source that they 20:13.199 --> 20:15.640 come from and the mechanism bringing 20:15.640 --> 20:17.920 them . Uh , further examination , 20:18.339 --> 20:21.020 however , of the locations where we see 20:21.020 --> 20:24.750 them and of the almost constant 20:24.750 --> 20:28.280 intensities that we see . Uh , 20:28.469 --> 20:31.170 almost forced us to the conclusions 20:31.170 --> 20:34.089 that they must somehow be protons from 20:34.089 --> 20:37.630 the uh outer Van Allen belt region 20:37.630 --> 20:41.579 here . Which are somehow uh coming 20:41.579 --> 20:44.719 loose from the Earth's field and 20:45.579 --> 20:48.660 Moving outward and then getting onto 20:48.660 --> 20:50.979 the interplanetary fields and then 20:50.979 --> 20:53.900 moving out to where we see them and uh 20:53.900 --> 20:57.400 perhaps an inverse process of the 20:57.739 --> 20:58.900 postulated 21:01.959 --> 21:04.126 process where we bring uh solar cosmic 21:04.126 --> 21:06.237 particles in from the sun to populate 21:06.237 --> 21:09.589 the Van Allen belts initially . Uh , 21:09.689 --> 21:11.849 we're anxiously waiting , getting our 21:11.849 --> 21:15.449 data , and now our computer programs 21:15.449 --> 21:17.616 that , uh , Berkeley in shape where we 21:17.616 --> 21:20.040 can examine this in detail . We've 21:20.040 --> 21:22.096 unfortunately been delayed in that . 21:24.560 --> 21:27.520 If I have the next slide , I'll show 21:27.520 --> 21:30.160 you one orbit of data from the 21:30.160 --> 21:33.900 telescopes when these uh very 21:34.310 --> 21:36.760 uh steady fluxes of protons were 21:36.760 --> 21:40.069 present . And uh during this period and 21:40.069 --> 21:43.890 actually for a period of uh A couple 21:43.890 --> 21:47.250 of orbits earlier , these fluxes were 21:47.250 --> 21:50.150 almost constant . There is some uh 21:50.449 --> 21:52.782 changing here . There , there is a very , 21:53.290 --> 21:56.010 very slight shadowing of protons , not 21:56.010 --> 21:58.410 very much at all . This motion electron 21:58.410 --> 22:01.810 phenomena . But then these particles 22:01.810 --> 22:04.770 essentially turn off uh so somebody 22:04.770 --> 22:08.099 closed a valve . And this is 22:08.099 --> 22:10.321 characteristic of the way they behave . 22:10.321 --> 22:12.569 When they appear , they're suddenly 22:12.569 --> 22:15.579 there . And when they disappear , 22:16.000 --> 22:19.410 they're gone just as fast . And 22:20.079 --> 22:23.609 Uh , we're very hopeful that we'll be 22:23.609 --> 22:26.410 able to make some sense out of what 22:26.410 --> 22:29.260 turns these things on and off . And 22:29.260 --> 22:31.719 determine what , where they're coming 22:31.719 --> 22:34.560 from and what the mechanism is and 22:35.180 --> 22:37.579 presumably now in the magnetosphere . 22:42.920 --> 22:45.329 OK , I think I'll just throw it open to 22:45.650 --> 22:48.520 any questions , uh , now . OK . 22:50.359 --> 22:52.192 What is the lifetime estimate of 22:55.459 --> 22:57.626 wish you hadn't brought that up . Uh , 22:57.626 --> 23:01.000 um , will get that for us . We had been 23:01.000 --> 23:03.619 very hopeful of getting another dozen 23:03.619 --> 23:05.675 or a couple of dozen magnetic passes 23:05.675 --> 23:07.939 out of this satellite since it works so 23:07.939 --> 23:10.219 beautifully . Um 23:12.150 --> 23:14.317 I think we're gonna cover that . Chris 23:14.317 --> 23:16.650 said it was gonna stay up there forever , 23:16.650 --> 23:19.780 so it better . Well 23:20.729 --> 23:23.869 it doesn't crash , we hope it will the 23:23.869 --> 23:26.036 world's going to come to an end pretty 23:26.036 --> 23:28.091 shortly I'm afraid . We'll see . Any 23:28.091 --> 23:30.202 other , any questions about particles 23:30.202 --> 23:32.849 and fields ? OK , let's continue on 23:32.849 --> 23:35.016 with subsatellite and get on the map . 23:35.016 --> 23:37.016 We didn't say anything about it . I 23:37.016 --> 23:38.905 assume that that our satellite is 23:38.905 --> 23:41.127 sending out good data . Is it , is it , 23:41.127 --> 23:42.960 is batteries are charging OK and 23:42.960 --> 23:45.238 everything ? It's not running into the , 23:45.238 --> 23:47.571 the problem that the 15 guys , uh , had , 23:47.571 --> 23:49.738 or was that normal for the seems to be 23:49.738 --> 23:51.793 a little bit better battery charge . 23:51.793 --> 23:53.849 Yeah , the machine is working . OK , 23:53.849 --> 23:56.016 and all the detectors are operating as 23:56.016 --> 23:59.150 far as we know , yeah . It's just that 23:59.150 --> 24:01.780 it's got a short lifetime . OK , let's 24:01.780 --> 24:03.891 see . I think Larry Sharp is going to 24:03.891 --> 24:06.290 take , uh , Uh , colon's place , right ? 24:06.750 --> 24:10.500 OK . Magnetometer . The objectives of 24:10.500 --> 24:12.278 the magnetometer experiment are 24:12.278 --> 24:14.349 essentially threefold . First is to 24:14.939 --> 24:17.050 measure and map the remnant magnetism 24:17.050 --> 24:19.780 on the lunar surface . Second is to map 24:19.780 --> 24:21.724 the electrical conductivity of the 24:21.724 --> 24:23.891 lunar interior . and finally study the 24:23.891 --> 24:25.558 various aspects of the moon's 24:25.558 --> 24:27.336 interaction with the fields and 24:27.336 --> 24:29.869 particles in its environment . The wide 24:29.869 --> 24:31.758 scope of these objectives is made 24:31.758 --> 24:33.980 possible by the geometry of orbit as it 24:33.980 --> 24:36.050 passes through three fundamentally 24:36.050 --> 24:38.479 different regions of space . For 24:38.479 --> 24:41.400 example , uh , to get the spatial 24:41.400 --> 24:43.567 variations of remnant magnetism on the 24:43.567 --> 24:45.511 lunar surface , one must be in the 24:45.511 --> 24:47.622 geomagnetic tail , where the temporal 24:47.622 --> 24:50.319 variations are almost absent in the 24:50.319 --> 24:52.597 magnetic field , very steady situation . 24:54.020 --> 24:55.699 The initial orbit of the 24:57.449 --> 24:59.650 subsatellite was somewhat lower than 24:59.650 --> 25:02.290 Apollo 15 , and the inclination about 25:02.290 --> 25:05.130 11 degrees instead of 28 . And I'd like 25:05.130 --> 25:07.819 to show you the Predictions 25:12.479 --> 25:13.479 Of the orbit . 25:16.540 --> 25:18.819 Right over there . On the backside 25:18.819 --> 25:19.760 backside of . 25:24.189 --> 25:24.640 Oops . 25:33.219 --> 25:36.880 See . Mm . 25:39.530 --> 25:41.869 OK , we've plotted days past deployment 25:42.199 --> 25:45.810 versus the parallel altitude . OK . We 25:45.810 --> 25:47.921 start out here in pretty good shape , 25:47.921 --> 25:50.489 about 97 kilometers or 97 by 123 , I 25:50.489 --> 25:54.010 guess , and the prediction was a very 25:54.010 --> 25:57.930 rapid drop down to 30 some , back up 25:57.930 --> 26:01.310 in good shape , no real trouble until , 26:01.369 --> 26:04.380 uh , here's the ground line . About 26:04.380 --> 26:08.119 200 days when the probability is 50/50 26:08.119 --> 26:10.920 of a crash the error bars here , you 26:10.920 --> 26:13.142 can say the probability was 1 chance in 26:13.142 --> 26:15.630 10 of a crash here and maybe 1 in 5 . 26:15.959 --> 26:17.403 We've updated this plot . 26:27.719 --> 26:31.500 Whoops . And the odds have changed 26:31.500 --> 26:34.069 considerably . This is the prediction . 26:34.270 --> 26:36.603 Notice the time scale has been expanded . 26:37.939 --> 26:40.106 Greatly these are hours now instead of 26:40.106 --> 26:42.160 days . Here was the initial 26:43.859 --> 26:46.989 initial prediction that 30 . 7 26:46.989 --> 26:49.211 kilometers and here are the actual data 26:49.211 --> 26:51.045 points . This one was taken this 26:51.045 --> 26:53.560 morning around in here , and if you can 26:53.560 --> 26:55.680 extrapolate by eye , it looks like we 26:55.680 --> 26:58.760 have about 4 days left . I guess Bill 26:58.760 --> 27:00.729 Sogren's taking 50/50 odds it will 27:00.729 --> 27:02.840 crash if anyone's in a betting mood . 27:02.959 --> 27:04.848 It's possible that we'll skim the 27:04.848 --> 27:07.420 surface and come back out , even if we 27:07.420 --> 27:09.476 make it through this one , that next 27:09.476 --> 27:11.753 dip is going to probably finish us off . 27:13.030 --> 27:15.319 Which is curiosity , uh , might be out 27:15.319 --> 27:17.541 of your field , but , uh , how come our 27:17.541 --> 27:20.520 prediction didn't match the uh the 27:20.520 --> 27:24.479 actuality , I mean we . You have a 27:24.479 --> 27:26.646 gravity experiment . We don't know the 27:26.646 --> 27:28.812 gravity field that well , and that's , 27:28.812 --> 27:30.868 uh , the business of this , uh . Sub 27:30.868 --> 27:32.923 satellite initially to determine the 27:32.923 --> 27:35.146 gravitysphere you're you're gonna throw 27:35.146 --> 27:38.890 that though I think right . OK , and uh 27:38.890 --> 27:41.001 we've been screaming like about these 27:41.001 --> 27:43.650 pads that I know Bill Wal out here at 27:43.650 --> 27:46.209 MSC has tried to drive that point home 27:46.209 --> 27:48.369 so many times . I think we're really 27:48.369 --> 27:51.900 seeing it coming . Man , just goes to 27:51.900 --> 27:53.900 show you you can't redo 6 months of 27:53.900 --> 27:55.660 planning in 2 days . OK . 27:58.290 --> 28:00.569 any event , we have one month's worth 28:00.569 --> 28:02.680 of good data which we will add to our 28:02.680 --> 28:05.930 Apollo 15 results and to get some idea 28:05.930 --> 28:07.986 of what we're doing with this data , 28:07.986 --> 28:10.430 I'd like to show the first slide which 28:10.430 --> 28:14.430 represents An average of 17 different 28:14.430 --> 28:18.010 orbits . Taken when the moon was in the 28:18.010 --> 28:21.829 Earth's magnetotail . And we've plotted 28:21.829 --> 28:24.500 the moon's longitude . Along the 28:24.500 --> 28:28.099 horizontal and the magnetic field in 28:28.099 --> 28:30.420 gammas along the vertical , these 28:30.420 --> 28:32.309 numbers are representative of the 28:32.309 --> 28:34.531 Earth's tail field and of course if you 28:34.531 --> 28:36.709 subtract out an average value , this 28:36.939 --> 28:40.099 residual would represent the lunar 28:40.099 --> 28:42.619 surface field and of course the big 28:42.619 --> 28:45.939 result is . Really huge 28:46.520 --> 28:48.800 magnetic dip going over the Van de 28:48.800 --> 28:50.911 Graaf crater , or a region right near 28:50.911 --> 28:53.550 the Vonder Graf crater . Also , the 28:53.930 --> 28:56.041 other initial result we got out of 15 28:56.041 --> 28:58.152 data was that most of the dips in the 28:58.152 --> 29:00.041 magnetic field seem to be clearly 29:00.041 --> 29:02.208 associated with craters lying within a 29:02.208 --> 29:04.430 few degrees of the ground track defined 29:04.430 --> 29:07.050 by the orbit subsatellite . We've 29:07.050 --> 29:10.369 numbered the 7 most obvious local 29:10.369 --> 29:12.609 minima and named 5 of them with 29:12.609 --> 29:15.599 associated craters . Initial results 29:15.599 --> 29:18.719 from Apollo 16 show the same type of 29:18.719 --> 29:20.608 structure , although we don't see 29:20.608 --> 29:22.941 anything as big as Van de Graf . We see , 29:22.941 --> 29:24.997 we do go over Korolev again . That's 29:24.997 --> 29:27.108 where the orbits intersect when we're 29:27.108 --> 29:29.920 in the tail . And we see a few other 29:29.920 --> 29:33.319 Hertzprung and Pavlov type bumps . One 29:33.319 --> 29:35.319 is with a little tiny crater called 29:35.319 --> 29:38.890 Stein . And uh one near Mendelev . 29:41.239 --> 29:43.239 Repeat this procedure several times 29:43.239 --> 29:45.461 with different lunations , so you cover 29:45.461 --> 29:47.550 different tracks over the moon , and 29:47.550 --> 29:49.849 this allows a contour map to be made . 29:50.280 --> 29:52.002 So if I go to the next slide . 29:54.890 --> 29:56.890 Oh this shows the ground track from 29:56.890 --> 29:59.880 where we . Uh . Found the island . 29:59.959 --> 30:02.237 Here's one over Hertz Sprung , Korolev , 30:02.939 --> 30:05.050 uh , here's Van de Graf . You can see 30:05.050 --> 30:07.050 we went right close to the northern 30:07.050 --> 30:09.217 border , Pavlov , and one over Milne . 30:09.217 --> 30:10.939 So it was a pretty good 1 to 1 30:10.939 --> 30:13.050 correspondence with , uh , with large 30:13.050 --> 30:15.719 craters . Uh , the initial . 30:17.060 --> 30:19.171 11 orbit of course is much nearer the 30:19.171 --> 30:21.227 equator . The inclination goes up to 30:21.227 --> 30:24.660 plus or -11 , so we saw one over 30:24.660 --> 30:27.209 Korolev and Stein crater is located 30:27.209 --> 30:29.320 right about here . It's not too big . 30:29.420 --> 30:31.531 The next map shows a compilation of a 30:31.531 --> 30:34.020 lot of these linear profiles . Next 30:34.020 --> 30:36.930 slide into a contour map . 30:38.709 --> 30:41.042 It's a little hard to read the contours . 30:41.739 --> 30:44.780 You can see this big black blotch here 30:44.780 --> 30:47.219 is a result of contours stacked on top 30:47.219 --> 30:49.386 of each other near this Von de graph . 30:50.000 --> 30:52.569 Anomaly . You can see the 30:54.079 --> 30:56.246 Numbers are hard to make out . You can 30:56.246 --> 30:58.468 see the structure over Korolev , a hint 30:58.468 --> 31:00.989 of some structure over Hertzprung . And 31:01.000 --> 31:03.780 uh . The Southern Sea over here is 31:03.780 --> 31:06.310 actually an enhancement sticking out of 31:06.310 --> 31:08.366 the moon , so to speak . You can see 31:08.366 --> 31:10.532 Milne shows a definite structure . The 31:10.532 --> 31:14.430 Apollo 16 results should enable 31:14.430 --> 31:16.319 us to expand this map . We'll get 31:16.319 --> 31:18.541 better resolutions throughout this area 31:18.541 --> 31:20.819 and be able to extend it along in here . 31:20.819 --> 31:23.041 We'll probably still have a gap down in 31:23.041 --> 31:22.329 this region . 31:27.359 --> 31:30.229 Oh yes . The numbers presented in the 31:30.229 --> 31:32.118 chart , if you can see them , are 31:32.118 --> 31:34.229 measured in 10th of gamma at an 31:34.229 --> 31:36.939 altitude of 100 kilometers . So for 31:36.939 --> 31:40.030 example , a good representative value 31:40.030 --> 31:41.959 is about 30 , and the zero we've 31:41.959 --> 31:44.181 arbitrarily chosen at the bottom of the 31:44.181 --> 31:46.181 Van de Graf dip , since this is the 31:46.181 --> 31:48.619 lowest value of magnetism we observed . 31:48.699 --> 31:50.421 We just call it zero and scale 31:50.421 --> 31:52.630 everything relative to it . So if 31:52.630 --> 31:54.852 you're at 100 kilometers , you'll see a 31:54.852 --> 31:57.709 3 gamma dip going over Van de Graaf on 31:57.709 --> 32:01.150 the average . Oh , we were fortunate . 32:02.300 --> 32:04.522 Uh , also , the near side of the moon , 32:04.522 --> 32:06.829 does the gravity profile look have any 32:07.170 --> 32:09.410 can you correlate ? I've looked at the 32:09.410 --> 32:11.780 gravity profile and it doesn't seem to 32:12.160 --> 32:15.219 correlate at all uh we don't actually 32:15.219 --> 32:17.330 the laser data correlates better with 32:17.330 --> 32:19.441 you don't , there's no gravity on the 32:19.441 --> 32:21.552 backside , OK , but on the front side 32:21.552 --> 32:23.608 understand uh . It correlates pretty 32:23.608 --> 32:25.775 well with the laser data which shows a 32:25.775 --> 32:27.941 great big hole here in the backside of 32:27.941 --> 32:29.997 the moon around Fendi graph . That's 32:29.997 --> 32:29.910 where we get our big hole , but I can't 32:29.910 --> 32:32.459 see any scientific justification for 32:32.459 --> 32:34.780 connecting the two results . I will add 32:34.780 --> 32:38.469 the gamma rays secondary peak is also . 32:39.510 --> 32:41.621 I don't know what it means . It could 32:41.621 --> 32:43.677 be an alien star base or something . 32:43.689 --> 32:46.089 Anyway , the next slide shows the front 32:46.089 --> 32:49.569 side of the moon . And 32:50.750 --> 32:53.540 It's upside down . The thing to 32:53.540 --> 32:56.140 contrast is the much smoother nature of 32:56.140 --> 32:58.949 could we do a 180 on the . The slide , 32:58.989 --> 32:59.989 please . 33:04.030 --> 33:07.790 A job . Can you hear me ? Can you turn 33:07.790 --> 33:11.680 the slide around , please ? Well , it's 33:11.680 --> 33:15.569 on a coffee break , OK , right . Anyway , 33:15.810 --> 33:17.866 the front side of the moon is much , 33:17.866 --> 33:20.032 much smoother than the back side . The 33:20.032 --> 33:22.869 variations are on the order of a factor 33:22.869 --> 33:25.050 of 10 smooth . We don't see very much 33:25.050 --> 33:27.280 structure at all . It's very hard to 33:27.280 --> 33:28.630 even draw contours . 33:34.920 --> 33:37.087 Can , can you sort out the differences 33:37.087 --> 33:39.031 in that and the effects of running 33:39.031 --> 33:40.976 through the , The Earth's magnetic 33:40.976 --> 33:43.329 field effects , since you're , the 33:43.329 --> 33:46.479 front side is always , Close to the 33:46.479 --> 33:50.329 earth , can you sort out Are we really 33:50.329 --> 33:53.410 measuring magnetic variations on the 33:53.410 --> 33:55.188 backside caused by being on the 33:55.188 --> 33:57.188 backside , not due to our measuring 33:57.188 --> 33:59.410 environment ? All right , there , there 33:59.410 --> 34:01.743 are scale fields , very , very constant , 34:01.743 --> 34:03.966 uh , when you're in the . A good second 34:03.966 --> 34:06.299 when you're away from the neutral sheet , 34:06.299 --> 34:08.632 and that's where all this data is taken . 34:08.632 --> 34:10.688 Uh , well , I guess we never got the 34:10.688 --> 34:13.069 front slide complete . OK , this is a 34:13.069 --> 34:15.668 blow up of the Vander Graaf region in 34:15.668 --> 34:18.509 attempt to pinpoint the exact source of 34:18.849 --> 34:21.049 this large anomaly . We kind of 34:21.049 --> 34:23.382 suspected it was over the crater itself . 34:25.010 --> 34:27.177 Since we had always put forth a theory 34:27.177 --> 34:29.399 that what we were actually observing in 34:29.399 --> 34:31.621 these dips was some sort of a meteorite 34:31.621 --> 34:33.732 impact that caused a rather uniformly 34:33.732 --> 34:35.954 magnetized crust to suddenly have holes 34:35.954 --> 34:38.177 in it , and we're seeing the equivalent 34:38.177 --> 34:40.399 dipole of what was left over , and this 34:40.399 --> 34:42.510 kind of shoots holes in the theory we 34:42.510 --> 34:44.677 see . This is the BX component , which 34:44.677 --> 34:46.677 is the radio component , and a plus 34:46.677 --> 34:48.843 number indicates a value sticking into 34:48.843 --> 34:52.100 the moon . So you see this Rather 34:52.100 --> 34:55.718 large Hole here magnetically in between 34:55.718 --> 34:58.979 two craters . And uh , 35:00.239 --> 35:02.560 If you look at various models of double 35:02.560 --> 35:04.560 dipoles and stuff , it just doesn't 35:04.560 --> 35:06.879 quite fit . The other components , BY 35:06.879 --> 35:08.959 and BZ show that it can't be one of 35:08.959 --> 35:11.181 these angling dipoles from the crater . 35:13.639 --> 35:15.695 And presently , we're now conducting 35:15.695 --> 35:17.861 the same sort of studies over the rest 35:17.861 --> 35:19.917 of the anomalies to see if it checks 35:19.917 --> 35:22.139 out . I just , just yesterday completed 35:22.139 --> 35:24.195 the one over Korolev and that one is 35:24.195 --> 35:26.195 right in the middle of the crater , 35:26.195 --> 35:28.250 which is Promising for this shocking 35:28.250 --> 35:31.909 magnetization theory . Uh , 35:34.659 --> 35:36.548 How much do we have in the ground 35:36.548 --> 35:36.179 tracking and the military ? 35:40.780 --> 35:43.780 How much footage ? How much validity do 35:43.780 --> 35:46.002 we have in the ephemeras ? I understand 35:46.002 --> 35:48.169 there's no chance that we could be off 35:48.169 --> 35:47.760 by . 35:52.300 --> 35:55.459 Uh , but now you're talking about the 35:55.459 --> 35:56.626 finding read there . 36:00.010 --> 36:01.843 So it doesn't seem much chance . 36:03.929 --> 36:05.770 We'll get maybe one more as the 36:05.770 --> 36:07.992 subsatellite comes crashing down on the 36:07.992 --> 36:10.048 moon . The last 10 kilometers should 36:10.048 --> 36:12.270 give us a good swath of data which will 36:12.270 --> 36:14.326 give us another high resolution plot 36:14.326 --> 36:17.189 like this , but other than that we're 36:17.560 --> 36:20.550 kind of out of . OK , 36:23.040 --> 36:24.040 OK , thank you . 36:26.989 --> 36:30.949 OK , there's the front side of the moon . 36:31.659 --> 36:34.219 OK , and our coverage from Apollo 11 36:34.219 --> 36:36.300 will extend , I believe this is the 36:36.300 --> 36:38.840 equator across here . That's . 36:42.530 --> 36:46.129 I'm sorry . OK , this is 0 degrees . OK , 36:46.139 --> 36:48.195 we go from 0 to 90 degree east to 90 36:48.195 --> 36:49.972 west , the Terminator . This is 36:49.972 --> 36:52.028 Southern Sea region , which is about 36:52.028 --> 36:54.028 the only distinctive feature on the 36:54.028 --> 36:56.195 front side per se , and even that's on 36:56.195 --> 36:58.361 the Terminator . And again , these are 36:58.361 --> 37:00.306 relatively high values of magnetic 37:00.306 --> 37:02.361 fields sticking out of the moon . So 37:02.361 --> 37:04.528 you might say that the Southern Sea is 37:04.528 --> 37:06.750 a highly magnetized region . Notice the 37:06.750 --> 37:10.189 16 site is out of our coverage . As 37:10.189 --> 37:12.639 were all the Apollo landing sites . You 37:12.639 --> 37:15.629 have about a 3 , a 3 game of Belgium on 37:15.629 --> 37:17.796 the backside . What did you see on the 37:17.796 --> 37:19.740 front sides ? Well , most of these 37:19.740 --> 37:22.689 values are about 30 , 28 , 27 , which 37:22.689 --> 37:24.800 means they're all 3 gamma higher than 37:24.800 --> 37:27.090 that zero bendi graph . So I would say 37:27.090 --> 37:29.146 the maximum plus or minus is about a 37:29.146 --> 37:31.312 half a gamma on the whole front side . 37:32.969 --> 37:34.247 elongate parallel to ? 37:37.169 --> 37:40.020 This is a function of not having quite 37:40.020 --> 37:42.300 enough data . Instead of making 37:42.300 --> 37:44.300 physical looking contours , we drew 37:44.300 --> 37:46.189 actual contours of the data , and 37:46.189 --> 37:48.244 obviously if there's a little bit of 37:48.244 --> 37:50.244 offset from one orbit to the next , 37:50.244 --> 37:52.133 it's going to result in elongated 37:52.133 --> 37:54.356 contours . If we fixed this up and made 37:54.356 --> 37:57.260 some intelligent looking guesses , they 37:57.260 --> 37:59.850 would be much more circular . You have 37:59.850 --> 38:03.570 a data on the Apollo 12 and the 15 and 38:03.570 --> 38:05.959 16 . Surface . 38:07.310 --> 38:09.540 Yes , with 1214 , 15 , yes , 38:13.790 --> 38:15.957 well , you see , the surface data is , 38:15.957 --> 38:18.179 is , uh , deals with much smaller scale 38:18.179 --> 38:20.750 size phenomena , uh , and so there's 38:20.750 --> 38:22.830 really no 1 to 1 correlation , I 38:22.830 --> 38:26.489 suppose . That the Apollo . 38:33.159 --> 38:35.326 Well , if we could be sure that over a 38:35.326 --> 38:37.215 region of 100 kilometers that the 38:37.215 --> 38:39.326 average field was 38 gamma , which no 38:39.326 --> 38:41.540 one would bet on , then we could make 38:41.540 --> 38:43.699 some interesting predictions about 38:43.699 --> 38:45.689 other places on the moon . But I 38:45.689 --> 38:47.800 suspect if you went down to Apollo 12 38:47.800 --> 38:50.100 and went 100 m away , you'd find a much 38:50.100 --> 38:52.300 different value in magnetic field . We 38:52.300 --> 38:54.578 know it's the case . Look at Apollo 14 . 38:54.578 --> 38:56.578 They went 1 kilometer and they went 38:56.578 --> 38:59.000 from 43 gamma to 103 gamma . So who's 38:59.000 --> 39:01.056 to say what's a representative value 39:01.056 --> 39:03.333 for the magnetic field in a given area . 39:04.129 --> 39:07.409 How about 50 ? Apollo 15 they saw a 39:07.409 --> 39:10.159 steady field of 6 plus or minus 4 gamma , 39:10.209 --> 39:12.320 which is essentially zero , but there 39:12.320 --> 39:14.290 again , you know , behind the next 39:14.290 --> 39:16.070 boulder probably be 100 gamma . 39:19.070 --> 39:21.126 And the results in 16 I thought were 39:21.126 --> 39:23.292 tremendous , tremendous gradients they 39:23.292 --> 39:25.348 got between one place and another at 39:25.348 --> 39:28.709 313 . Uh , Gamma Field really surprised 39:28.709 --> 39:32.159 me as far as . Get value at large . 39:34.909 --> 39:37.669 Yes , have you seen any distinctive 39:37.669 --> 39:40.050 features about , uh , the , uh , 39:40.060 --> 39:42.116 correlate which might make you think 39:42.116 --> 39:44.469 that it was , uh , say a hot spot that 39:44.469 --> 39:48.250 had been , uh , near the surface 39:48.250 --> 39:50.560 and was That 39:52.560 --> 39:54.959 Soil covering which would change the 39:54.959 --> 39:57.800 surface temperature . The change . 39:59.929 --> 40:02.250 No , I'm not a , not a geologist type , 40:02.489 --> 40:05.560 uh . Well I already on about 17 . 40:06.649 --> 40:10.330 Uh That would change . 40:12.689 --> 40:14.633 It would seem to me that the , the 40:14.633 --> 40:16.800 younger a crater was , the more chance 40:16.800 --> 40:18.911 it would have to produce a good clean 40:18.911 --> 40:22.179 cut signature . On the uh magnetic 40:22.179 --> 40:25.070 field data . I mean , for example , Van 40:25.070 --> 40:27.014 de Graf itself looks like a fairly 40:27.014 --> 40:29.237 young crater because there's no there's 40:29.237 --> 40:31.126 very few secondary craters in the 40:31.126 --> 40:33.459 bottom of it , so it looks fairly young , 40:33.459 --> 40:35.626 whereas uh Things like Kurtzprung seem 40:35.626 --> 40:37.792 to be very old . They're well blotched 40:37.792 --> 40:39.181 with secondary graders . 40:43.330 --> 40:45.949 Center of the anomaly . Uh , it's 80 40:45.949 --> 40:49.040 kilometers from the northern rim . So 40:49.040 --> 40:51.096 from the center of Andy graph , it's 40:51.096 --> 40:53.540 about 130 , 140 kilometers . 40:57.540 --> 41:00.189 Any other questions ? OK , thank you , 41:00.250 --> 41:03.870 Larry , and Yeah , got a question ? No . 41:04.889 --> 41:07.056 Last subject will be the transponder . 41:35.659 --> 41:37.580 Uh , this is a , uh , gravity 41:37.580 --> 41:40.340 experiment , and , uh , we monitor the 41:40.340 --> 41:43.280 gravity by just monitoring the , uh , 41:43.489 --> 41:46.780 velocity of the spacecraft or the limb 41:46.780 --> 41:50.639 or the , uh , Sub-satellite . Of course , 41:50.719 --> 41:52.941 on uh this particular mission , we lost 41:52.941 --> 41:55.199 our LEM data on impact cause it started 41:55.199 --> 41:58.120 tumbling . And so that data was lost . 41:58.159 --> 42:02.129 We do have , how have the uh CSM in the 42:02.129 --> 42:04.909 low altitude orbit , which is Uh , 42:05.729 --> 42:07.062 very interesting data . 42:14.270 --> 42:15.550 These parts on right . 42:27.879 --> 42:31.639 Here's the orbital track and hopefully 42:31.639 --> 42:35.239 I can get this aligned . Uh , 42:35.600 --> 42:38.639 not like that . This profile just below 42:38.639 --> 42:42.350 it is the Gravity 42:42.350 --> 42:44.709 anomaly that was detected . This line 42:44.709 --> 42:47.189 right here represents zero 42:48.370 --> 42:50.592 gravity central isostatic equilibrium , 42:50.750 --> 42:52.750 and anything below it , of course , 42:52.750 --> 42:56.229 that'd be negative gravity deviations . 42:57.070 --> 42:58.903 Here we are at Ptolemais going . 43:00.310 --> 43:02.366 Essentially over the center with the 43:02.366 --> 43:04.366 track , and we can see the large uh 43:04.366 --> 43:06.477 negative anomaly again and almost 100 43:06.477 --> 43:10.179 mgs . Uh . Uh , here we see , uh , 43:10.459 --> 43:12.737 some highland material where we have a , 43:12.737 --> 43:14.848 a positive , then we drop down into a 43:15.090 --> 43:17.679 relative low in between these two old 43:17.679 --> 43:19.830 craters , Hipparchus and Alvitgnius , 43:20.620 --> 43:23.500 and then a , a high in here . Uh , at 43:23.500 --> 43:25.722 this point , there's a Descartes , uh . 43:26.310 --> 43:28.421 The landing site , and we're actually 43:28.421 --> 43:30.588 about a 50 mg negative anomaly in that 43:30.588 --> 43:32.489 region . Uh , there's some nice 43:32.489 --> 43:35.209 correlations here with the , uh , laser 43:35.209 --> 43:37.431 altimetry measurements . I'll show them 43:37.431 --> 43:39.889 in the next , uh , profile . But this 43:39.889 --> 43:41.889 is continuous . I've just taken one 43:41.889 --> 43:44.111 small section here . We have this thing 43:44.111 --> 43:46.889 from Uh , limb to limb , so about 110 43:46.889 --> 43:50.770 longitude plus to 100 110 minus . And 43:50.770 --> 43:54.659 uh , Essentially , 3 revs , and 43:54.659 --> 43:57.449 rev 3 through rev . Uh , 43:58.389 --> 44:01.550 11 , that's 8 revs , 8 revs of data 44:01.550 --> 44:03.669 that are pretty good and then they 44:03.669 --> 44:06.629 started their . Station keeping and uh 44:06.760 --> 44:08.927 the data kind of got garbaged up a lot 44:08.927 --> 44:11.149 with all the maneuvering was going on . 44:14.800 --> 44:17.022 Uh , I don't even point out one kind of 44:17.022 --> 44:19.610 interesting thing here . Uh , notice 44:19.610 --> 44:21.499 that , uh , Ptolemais here has an 44:21.499 --> 44:23.721 anomaly much , much lower than Nubium . 44:23.721 --> 44:25.888 Although Nubium , which is this region 44:25.888 --> 44:28.110 right in here , this Maran Nubium right 44:28.110 --> 44:31.010 in here , uh , It's still about -50 mg . 44:41.949 --> 44:44.129 Here's an altimeter profile . 44:45.780 --> 44:48.780 And uh going right to the Nubian 44:49.090 --> 44:51.146 Ptolemais region again , we see that 44:51.300 --> 44:54.090 Nubium uh elevation here is , uh , some , 44:54.500 --> 44:57.209 by the way , the scale here is uh 2 44:57.209 --> 44:59.979 kilometers per heavy line . So we've 44:59.979 --> 45:02.090 dropped down here almost 2 kilometers 45:02.090 --> 45:04.035 from the floor of Ptolemais to the 45:04.035 --> 45:06.139 floor of Nubium . Yet the uh 45:07.850 --> 45:10.017 gravity anomaly is just the opposite , 45:10.017 --> 45:12.530 that Ptolemais is some 50 milligaus 45:12.530 --> 45:16.229 lower than the Nubian region . And 45:16.229 --> 45:18.340 another interesting point is , Fred , 45:18.340 --> 45:21.370 on these ACIC maps , Nubium is shown 1 45:21.370 --> 45:25.310 kilometer higher than Ptolemais . And 45:25.310 --> 45:27.500 here we are 2 kilometers lower , so 45:27.500 --> 45:29.389 we're talking about a 3 kilometer 45:29.389 --> 45:31.444 discrepancy in just that little area 45:31.444 --> 45:33.611 right there . So I think some of these 45:33.611 --> 45:35.833 guys were talking about the right thing 45:35.833 --> 45:35.149 when they said we really didn't know 45:35.149 --> 45:38.750 the altitudes too well . I , I think 45:38.750 --> 45:40.861 that shows up quite dramatically when 45:40.861 --> 45:44.050 you look at the . At the low sun angle . 45:45.090 --> 45:47.201 View as you approach the Terminator , 45:47.201 --> 45:49.330 the things that were in Nubum didn't 45:49.330 --> 45:52.689 show up until significantly after we 45:52.689 --> 45:54.745 anticipated . We missed our times on 45:54.745 --> 45:56.800 those things a great deal , and that 45:56.800 --> 45:58.633 could only be called by having a 45:58.633 --> 46:00.745 discrepancy in our relative heights . 46:00.745 --> 46:03.022 Yeah , this is not just this is Rev 28 . 46:03.022 --> 46:05.610 We've looked at there are 5 real good 46:06.169 --> 46:08.169 tracking laser tracking passes over 46:08.169 --> 46:10.336 this region , and we've looked at 3 of 46:10.336 --> 46:12.058 them , and all 3 show the same 46:12.058 --> 46:14.280 consistency of the drop there . Another 46:14.280 --> 46:16.391 interesting thing here , Procolarum , 46:16.550 --> 46:19.110 Franklotati , Fecunditatus are all seem 46:19.110 --> 46:21.909 to be about on the same level . Smithyi 46:21.909 --> 46:24.739 again being a low about 4.5 kilometers . 46:24.790 --> 46:26.846 That was the same thing on Apollo 15 46:26.846 --> 46:28.901 when we passed over it . It was some 46:28.901 --> 46:31.300 4.5 kilometers below as mean radius 46:31.300 --> 46:33.522 here , and we're still referencing this 46:33.522 --> 46:37.050 to a 1738 0.1 46:38.510 --> 46:41.850 radius off the CG . If you take 46:41.850 --> 46:44.969 this stuff and start fitting it to an 46:44.969 --> 46:48.770 optical center with a CG 46:48.770 --> 46:52.080 offset , that you do indeed get the 2 46:52.080 --> 46:54.810 kilometer shift again of the CG being 46:54.810 --> 46:56.477 closer to the Earth by some 2 46:56.477 --> 46:59.520 kilometers . Let's say that tranquility 46:59.520 --> 47:01.479 is about 2.5 kilometers lower than 47:01.479 --> 47:04.250 Descartes . That's right , yeah , 47:04.409 --> 47:06.520 here's the landing site right in here 47:06.520 --> 47:08.353 and uh this is we had a negative 47:08.353 --> 47:10.465 gravity anomaly in here , well , kind 47:10.465 --> 47:12.631 of according to this , maybe that's uh 47:12.631 --> 47:14.853 the situation because it looks like a , 47:14.853 --> 47:18.379 a topographic globe . Yeah . 47:27.909 --> 47:30.620 This is the backside . We had some , 47:30.739 --> 47:32.906 these are the limbs where the data was 47:32.906 --> 47:35.072 missing . These are taken from those , 47:35.072 --> 47:37.072 this data is taken from that thrift 47:37.072 --> 47:39.295 printout that we get in real time , and 47:39.295 --> 47:39.250 there's some gaps in the data . These 47:39.250 --> 47:41.419 will be filled in , uh , once they get 47:41.419 --> 47:44.419 the station tapes delivered . But we 47:44.419 --> 47:46.475 can see the crater Hertz Sprung here 47:46.475 --> 47:48.697 very evidently with the central peak or 47:48.697 --> 47:50.863 something in it . You , you don't have 47:50.863 --> 47:54.540 any data on that . 100 , 120 degree 47:54.540 --> 47:57.300 region , not now . We should have it 47:57.300 --> 47:59.411 next week or so whenever they get the 47:59.411 --> 48:00.578 tapes here reduced . 48:03.169 --> 48:06.350 Uh , one of the things that , well , on 48:06.350 --> 48:08.620 Apollo 15 , there was a , a definite , 48:08.770 --> 48:11.100 well , centered about 180 . There was a 48:11.100 --> 48:13.860 definite , uh , big , uh , trough in 48:13.860 --> 48:15.860 here which went down about some 4.5 48:15.860 --> 48:18.459 kilometers . It was very jagged , but 48:18.459 --> 48:20.626 it was centered just about here and on 48:20.626 --> 48:22.780 Apollo 16 now , we do not really see 48:22.780 --> 48:25.260 that . We see this hyland material here 48:25.260 --> 48:28.090 which we had on 6 , on 15 , that's , 48:28.459 --> 48:30.792 that started about in here and showed a , 48:30.979 --> 48:34.149 a marked , uh . High region in there . 48:34.520 --> 48:36.631 And then this is holding on , on , on 48:36.631 --> 48:38.853 16 also . So this is kind of consistent 48:38.853 --> 48:40.280 with Uh 48:42.350 --> 48:46.040 15 . Uh , here's , uh , another , this 48:46.040 --> 48:48.679 is orbit 38 on the backside . I'll just 48:48.679 --> 48:50.800 kind of lay it there to show you some 48:50.800 --> 48:54.639 of the consistency . This is 10 48:54.639 --> 48:57.969 orbits later and uh the profile is 48:57.969 --> 49:00.360 almost A Smith , the eye and uh oh here 49:00.360 --> 49:02.989 we have some data in that . So there's , 49:03.110 --> 49:06.979 there's your data . OK . I don't know . 49:07.300 --> 49:09.356 Were you looking for some particular 49:09.356 --> 49:12.340 teacher for something around 105 , 105 . 49:18.719 --> 49:22.300 Uh , probably nothing dramatic . 49:25.340 --> 49:27.939 Uh , I do have some data on the 49:27.939 --> 49:29.995 sub-satellite from Apollo 15 , but I 49:29.995 --> 49:32.217 don't know if that's the time to really 49:32.217 --> 49:31.909 show here . I think I've shown enough 49:31.909 --> 49:34.790 stuff on 16 . Yeah , well , I'd like to 49:34.790 --> 49:36.679 stick to 16 . Any of the , of the 49:36.679 --> 49:38.679 problems we have or any of the data 49:38.679 --> 49:40.790 that we got for the crew . Well , I'm 49:40.790 --> 49:42.800 very happy with all the data I've 49:42.800 --> 49:46.550 gotten on 16 and Sub-satellite on 16 49:46.550 --> 49:50.010 like uh Larry mentioned just before me , 49:50.590 --> 49:52.701 it's pretty grim although there was , 49:52.709 --> 49:54.820 there was an OD solution just run out 49:54.820 --> 49:57.629 about an hour ago where the last state 49:57.629 --> 50:01.219 vector was uh Us as 50:01.219 --> 50:04.600 the uh Position 50:04.600 --> 50:07.139 for running out the lifetime program 50:07.489 --> 50:09.322 and the lifetime program , if we 50:09.322 --> 50:11.322 believe that 15-8 model that we had 50:11.322 --> 50:13.211 used initially back there when we 50:13.211 --> 50:15.156 injected that thing says that this 50:15.156 --> 50:17.360 thing should come back up , still says 50:17.360 --> 50:20.679 it's not going to crash . But this will 50:20.679 --> 50:22.901 be a very interesting thing to watch in 50:22.901 --> 50:22.750 the next couple of days , right ? 50:25.159 --> 50:26.603 That's the seismometers . 50:30.510 --> 50:32.760 Uh , I asked , uh , Kovach about that , 50:32.840 --> 50:34.951 and I don't know whether he can speak 50:34.951 --> 50:37.062 for Latham or not , but , uh , I told 50:37.062 --> 50:39.284 him it's 50 pounds and whether they can 50:39.284 --> 50:41.679 actually see an impact of 50 pounds . I 50:41.679 --> 50:44.199 think that's all it weighs , the 50:44.199 --> 50:47.560 central station . Uh , 50:49.010 --> 50:51.232 let's see , it should hit about maybe . 50:52.090 --> 50:54.570 Some 20 or 30 degrees west longitude 50:54.570 --> 50:56.800 and 5 or 6 degrees north , is that 50:56.800 --> 51:00.320 right , Something like that about 5 or 51:00.320 --> 51:03.020 6 north latitude and about 30 west . 51:03.659 --> 51:05.770 That's what it looks like that linear 51:05.770 --> 51:08.540 extrapolation that that's . 51:10.669 --> 51:13.360 Thank you , Bill . Thank you gentlemen 51:13.360 --> 51:15.304 for attending . This concludes our 51:15.304 --> 51:18.120 scientific debrief . And I'd like to 51:18.120 --> 51:20.342 thank the crew for giving their time up 51:20.342 --> 51:22.120 to come on over to give us some 51:22.120 --> 51:24.287 information and also learn some things 51:24.287 --> 51:26.342 that would happen . OK , uh , let me 51:26.342 --> 51:28.509 say something for the crew . I want to 51:28.509 --> 51:30.287 commend Ken for the way that he 51:30.287 --> 51:32.320 operated the Simba . I don't think 51:32.320 --> 51:34.320 you'll ever find a guy who's either 51:34.320 --> 51:36.959 more interested in it or more aware of 51:36.959 --> 51:39.126 what the operational problems were and 51:39.126 --> 51:42.100 who could do a better job . He really 51:42.100 --> 51:44.322 did an outstanding job and I think he's 51:44.322 --> 51:46.544 well done . The other thing I'd like to 51:46.544 --> 51:48.378 say is , since I've been on this 51:48.378 --> 51:50.156 program , I've been continually 51:50.156 --> 51:52.267 impressed with the importance of what 51:52.267 --> 51:56.020 we're doing in in uh . In our support 51:56.020 --> 51:58.187 of you guys , these experiments , they 51:58.187 --> 52:00.679 look way out right now , and they're 52:00.679 --> 52:02.846 difficult for the man in the street to 52:02.846 --> 52:06.489 relate to . But my feeling is from some 52:06.489 --> 52:08.600 of the things I've seen here and from 52:08.600 --> 52:12.250 the thrust of science and technology in 52:12.250 --> 52:15.250 this country that in our lifetime and 52:15.399 --> 52:17.689 and I won't want to say when , but I 52:17.689 --> 52:19.856 imagine it's going to be a site sooner 52:19.856 --> 52:22.078 than anybody even here in this room can 52:22.078 --> 52:24.189 imagine they're going to be practical 52:24.189 --> 52:25.856 applications of some of these 52:25.856 --> 52:27.911 discoveries that have been made that 52:27.911 --> 52:29.911 will affect every one of us . And I 52:29.911 --> 52:32.078 think you're to be congratulated . The 52:32.078 --> 52:31.939 other thing is that I get out of all 52:31.939 --> 52:33.939 this that I think the United States 52:33.939 --> 52:36.050 ought to be spending 2 to 3 times the 52:36.050 --> 52:38.272 amount of money that we are spending on 52:38.272 --> 52:40.217 basic research and development and 52:40.217 --> 52:42.383 applied research and development . And 52:42.383 --> 52:44.495 I think if you really look at the big 52:44.495 --> 52:46.661 picture of our energy requirements for 52:46.661 --> 52:48.828 clean energy in the future in order to 52:48.828 --> 52:50.828 improve the life of human beings on 52:50.828 --> 52:52.939 this planet , we ought to do that and 52:52.939 --> 52:54.550 get on with it . Thank you . 52:58.649 --> 53:02.459 During the next couple of months 53:02.879 --> 53:05.100 we'll probably have an opportunity to 53:06.070 --> 53:08.320 Talked to a lot of people that helped 53:08.320 --> 53:10.810 to have some influence or shape the 53:10.810 --> 53:12.959 pattern of our program and related 53:12.959 --> 53:16.580 programs . And I would appreciate 53:16.580 --> 53:19.189 it very much . I'm sure we all could 53:19.189 --> 53:21.300 use the data as you find out things , 53:21.300 --> 53:23.356 we realize that you have preliminary 53:23.356 --> 53:25.590 data today and a lot of the things are 53:25.590 --> 53:27.812 only hints and suggestions of things to 53:27.812 --> 53:31.709 come . I would personally appreciate 53:31.709 --> 53:33.653 it very much if you give us a call 53:34.270 --> 53:36.603 periodically and tell us what you found . 53:36.979 --> 53:39.201 It's too easy for us to go through here 53:39.201 --> 53:41.629 and at the end of a week or so walk off 53:41.629 --> 53:43.851 and never really know what happened and 53:43.851 --> 53:46.073 never know what kind of data came out . 53:46.073 --> 53:48.879 And uh I think that makes us very poor 53:48.879 --> 53:52.850 salesmen . I think you could help us do 53:52.850 --> 53:55.129 the job to kind of feedback the quality 53:55.129 --> 53:57.296 of the data that you've been getting . 53:57.296 --> 53:59.296 If you could keep us informed , and 53:59.296 --> 54:01.240 please don't ever feel like you're 54:01.240 --> 54:03.462 interfering with our operation or don't 54:03.462 --> 54:05.462 be inhibited to call us if we can't 54:05.462 --> 54:07.629 come to the phone and take the data or 54:07.629 --> 54:09.685 talk to you about it . The secretary 54:09.685 --> 54:11.685 will take the number and we will be 54:11.685 --> 54:13.851 glad to call you back . And if there's 54:13.851 --> 54:15.907 any time when you have some question 54:15.907 --> 54:18.073 about the data , and it doesn't matter 54:18.073 --> 54:20.296 how trivial it may seem to you , if you 54:20.296 --> 54:20.129 want to look at some data and you're 54:20.129 --> 54:22.351 curious to know whether we've ever seen 54:22.351 --> 54:24.810 a particular observation or whether the 54:24.810 --> 54:26.977 spacecraft was moving at the time your 54:26.977 --> 54:29.399 data was taken . I don't care how far 54:29.399 --> 54:31.500 out it might seem to you , questions 54:31.500 --> 54:33.600 are pretty cheap , and not asking 54:33.600 --> 54:35.656 questions can be very expensive . So 54:35.656 --> 54:38.120 please feel like our job isn't finished 54:38.120 --> 54:40.342 until you guys have all the information 54:40.342 --> 54:42.679 you can use , and I would like for you 54:42.679 --> 54:44.679 to feel like you can call anytime . 54:44.679 --> 54:48.040 Thank you very much . I'd like to give 54:48.040 --> 54:50.320 you my thanks also . I was very pleased 54:50.320 --> 54:52.264 with the way all the gear worked , 54:52.949 --> 54:55.171 especially my part on the lunar surface 54:55.171 --> 54:58.330 and the part I saw of Ken in orbit . Uh , 54:58.600 --> 55:00.711 it was just a real pleasure to , uh , 55:00.919 --> 55:03.086 have him placed all this stuff for all 55:03.086 --> 55:05.197 you people , and , uh , I'm glad it's 55:05.197 --> 55:07.479 working so well . And , uh , thanks for 55:07.479 --> 55:09.590 the opportunity of going . If you can 55:09.590 --> 55:11.757 gin up another one , I'll be glad to , 55:11.757 --> 55:13.100 uh , go along again . Thank you .