1 00:00:00,020 --> 00:00:04,030 A total solar eclipse lets NASA researchers try out technology that could one day aid in the development of future missions. 2 00:00:04,050 --> 00:00:08,130 However, they must flawlessly complete the experiment in a few short minutes. 3 00:00:08,150 --> 00:00:12,140 Nat: The corona can be studied from 4 00:00:12,160 --> 00:00:16,290 ground based telescopes only during an eclipse. 5 00:00:16,310 --> 00:00:20,340 Whenever an eclipse happens, we make use of it and try to test some of our ideas. 6 00:00:20,360 --> 00:00:24,360 We have only 2 minutes to do the experiment 7 00:00:24,380 --> 00:00:28,370 and we have been preparing for maybe more 8 00:00:28,390 --> 00:00:32,390 than a year. Nelson: Nothing can go wrong. Your camera can't shut down. 9 00:00:32,410 --> 00:00:36,420 You can't press the wrong button. Because there is no time to change your mind 10 00:00:36,440 --> 00:00:40,510 or make an alternate decision. 11 00:00:40,530 --> 00:00:44,520 Nat: We are going to set up the telescope and observe the total solar eclipse 12 00:00:44,540 --> 00:00:48,560 at 4 different wavelengths. The images taken 13 00:00:48,580 --> 00:00:52,690 in these 4 different wavelengths will be used to 14 00:00:52,710 --> 00:00:56,710 determine the temperature and flow speed of the corona 15 00:00:56,730 --> 00:01:00,730 Nelson: We are taking these images using a polarization camera. Which will be a first for us 16 00:01:00,750 --> 00:01:04,760 I think it is the first for the solar physics community. 17 00:01:04,780 --> 00:01:08,780 Once the moon completely covers the sun, the experiment begins. 18 00:01:08,800 --> 00:01:12,880 It's my job to make sure the image is in the field of view. 19 00:01:12,900 --> 00:01:16,920 At the correct time, one 20 00:01:16,940 --> 00:01:20,950 person has to give the command to turn the filter wheel, 21 00:01:20,970 --> 00:01:25,120 and for each filter there is a different exposure time. 22 00:01:25,140 --> 00:01:29,140 Another person has to enter the exposure time. 23 00:01:29,160 --> 00:01:33,150 It's a combined effort of 6 different hands. No one 24 00:01:33,170 --> 00:01:37,170 person can make any errors. 25 00:01:37,190 --> 00:01:41,210 Nat: We do feel the pressure and also the excitement of the eclipse, but still we have 26 00:01:41,230 --> 00:01:45,230 to focus on our experiment. 27 00:01:45,250 --> 00:01:49,270 Nelson: It's a tense feeling, but I believe we will succeed. 28 00:01:49,290 --> 00:01:53,280 music 29 00:01:53,300 --> 00:01:57,330 tone 30 00:01:57,350 --> 00:02:01,370 beeping 31 00:02:01,390 --> 00:02:03,570 beeping