1 00:00:07,670 --> 00:00:04,630 hubble is all about 2 00:00:09,509 --> 00:00:07,680 imagery it's all about taking clear 3 00:00:10,870 --> 00:00:09,519 sharp beautiful pictures of the sky and 4 00:00:17,269 --> 00:00:10,880 doing fantastic 5 00:00:19,269 --> 00:00:17,279 science with with those images 6 00:00:20,710 --> 00:00:19,279 the story of the hubble space telescope 7 00:00:23,029 --> 00:00:20,720 launch is best uh 8 00:00:24,950 --> 00:00:23,039 the way i like to describe it is uh 9 00:00:26,710 --> 00:00:24,960 climbing to the top of mount everest 10 00:00:28,230 --> 00:00:26,720 and then suddenly within a couple of 11 00:00:34,229 --> 00:00:28,240 months of sinking to the bottom of the 12 00:00:38,549 --> 00:00:36,229 we were having trouble focusing the 13 00:00:40,069 --> 00:00:38,559 telescope and uh 14 00:00:41,430 --> 00:00:40,079 we noticed that wide field camera 15 00:00:43,430 --> 00:00:41,440 pictures that were coming down were 16 00:00:45,670 --> 00:00:43,440 fuzzy fuzzy blobs instead of nice 17 00:00:47,350 --> 00:00:45,680 sharp points and over the course of 18 00:00:49,190 --> 00:00:47,360 early june we started to get worried 19 00:00:49,590 --> 00:00:49,200 maybe maybe there's something wrong with 20 00:00:51,910 --> 00:00:49,600 the 21 00:00:53,029 --> 00:00:51,920 mirror itself you can't believe how down 22 00:00:54,790 --> 00:00:53,039 every astronomer 23 00:00:56,630 --> 00:00:54,800 on the hubble team was that day because 24 00:00:58,790 --> 00:00:56,640 we're about to announce to the world 25 00:00:59,670 --> 00:00:58,800 we messed up we don't have the telescope 26 00:01:01,510 --> 00:00:59,680 we thought 27 00:01:02,950 --> 00:01:01,520 the conclusion we've come to from that 28 00:01:04,869 --> 00:01:02,960 is that there's a significant 29 00:01:06,469 --> 00:01:04,879 spherical aberration appears to be 30 00:01:08,070 --> 00:01:06,479 present in the optics and the simplest 31 00:01:08,630 --> 00:01:08,080 way of understanding it is that when you 32 00:01:10,789 --> 00:01:08,640 have a 33 00:01:12,230 --> 00:01:10,799 mirror that's focusing the light all 34 00:01:13,670 --> 00:01:12,240 comes together the single point 35 00:01:14,789 --> 00:01:13,680 is the objective of the exercise you 36 00:01:16,310 --> 00:01:14,799 want the light to come together and 37 00:01:17,910 --> 00:01:16,320 focus at a single point 38 00:01:19,749 --> 00:01:17,920 when you have spherical aberration it 39 00:01:21,109 --> 00:01:19,759 says that there's some disfigurement of 40 00:01:22,710 --> 00:01:21,119 that mirror that causes the light 41 00:01:24,149 --> 00:01:22,720 instead of focusing at a single point to 42 00:01:27,350 --> 00:01:24,159 be spread across a region 43 00:01:29,749 --> 00:01:27,360 in space and suddenly in the press was 44 00:01:31,990 --> 00:01:29,759 born the term hubble trouble 45 00:01:33,830 --> 00:01:32,000 i remember giving a talk to some young 46 00:01:36,310 --> 00:01:33,840 kids they were kindergarten kids 47 00:01:37,910 --> 00:01:36,320 really young kids about the wonders you 48 00:01:41,030 --> 00:01:37,920 know hubble and 49 00:01:43,109 --> 00:01:41,040 i said the word hubble telescope 50 00:01:44,950 --> 00:01:43,119 it was like i was jay leno everybody 51 00:01:46,710 --> 00:01:44,960 laughed 52 00:01:48,550 --> 00:01:46,720 it was a very sad very difficult time 53 00:01:57,910 --> 00:01:48,560 and some people left the program and 54 00:02:01,749 --> 00:02:00,310 john gave me this one ray of hope it was 55 00:02:04,389 --> 00:02:01,759 that one little ray of hope 56 00:02:05,910 --> 00:02:04,399 that i glommed onto we played with it we 57 00:02:08,309 --> 00:02:05,920 played with the model 58 00:02:10,309 --> 00:02:08,319 and we realized that if the error were 59 00:02:12,470 --> 00:02:10,319 in the primary mirror 60 00:02:15,190 --> 00:02:12,480 we could make our correction with a 61 00:02:18,309 --> 00:02:15,200 little mirror about the size of a nickel 62 00:02:19,190 --> 00:02:18,319 inside our camera so we purposely made 63 00:02:20,470 --> 00:02:19,200 the mirror in our 64 00:02:22,309 --> 00:02:20,480 instrument and therefore our whole 65 00:02:25,270 --> 00:02:22,319 camera out of focus 66 00:02:26,070 --> 00:02:25,280 with a minus sign it was as profoundly 67 00:02:29,510 --> 00:02:26,080 out of focus 68 00:02:32,949 --> 00:02:29,520 as the hubble telescope was exactly 69 00:02:34,710 --> 00:02:32,959 and that was not easy we were finishing 70 00:02:36,390 --> 00:02:34,720 up the final optical alignment and the 71 00:02:38,710 --> 00:02:36,400 nasa administrator dan golden 72 00:02:39,910 --> 00:02:38,720 visited jpl we went to the clean room 73 00:02:42,390 --> 00:02:39,920 and he said 74 00:02:44,550 --> 00:02:42,400 what's going on here larry simmons the 75 00:02:46,790 --> 00:02:44,560 project manager says well we're here to 76 00:02:48,309 --> 00:02:46,800 fix the hubble telescope and his 77 00:02:51,110 --> 00:02:48,319 response was no 78 00:02:51,430 --> 00:02:51,120 you're here to save the agency that was 79 00:03:04,550 --> 00:02:51,440 a 80 00:03:06,710 --> 00:03:04,560 pick 2 online 81 00:03:08,710 --> 00:03:06,720 we'd done everything that we thought we 82 00:03:13,270 --> 00:03:08,720 had to do but there's no substitute for 83 00:03:16,949 --> 00:03:15,270 the first image came and it looked 84 00:03:17,350 --> 00:03:16,959 really good i mean it looked just the 85 00:03:22,070 --> 00:03:17,360 way 86 00:03:25,589 --> 00:03:23,990 we did like nine press conferences in a 87 00:03:27,589 --> 00:03:25,599 row with primarily with pick 88 00:03:31,430 --> 00:03:27,599 pictures every single one made front 89 00:03:35,910 --> 00:03:34,229 it took this camera being put in the 90 00:03:38,070 --> 00:03:35,920 hubble in 1993 91 00:03:40,149 --> 00:03:38,080 to really start the career of hubble to 92 00:03:40,869 --> 00:03:40,159 turn hubble from a national disgrace 93 00:03:43,750 --> 00:03:40,879 almost 94 00:03:45,750 --> 00:03:43,760 to the great american comeback story and 95 00:03:47,589 --> 00:03:45,760 here it is still our workhorse camera 96 00:03:49,670 --> 00:03:47,599 going on 15 years 97 00:03:50,789 --> 00:03:49,680 it's going to be a tough moment when it 98 00:03:51,350 --> 00:03:50,799 comes out of the hubble because i 99 00:03:53,509 --> 00:03:51,360 remember 100 00:03:54,710 --> 00:03:53,519 exactly the moment it was in place in 101 00:03:56,470 --> 00:03:54,720 the hubble but i 102 00:03:57,990 --> 00:03:56,480 really look forward to be able to walk 103 00:03:59,190 --> 00:03:58,000 up to it and touch it someday in the