Cassini Activity Request (CAR) Form Observation Name: Saturn EUV-FUV Imaging Requesting Instrument: UVIS Objective: (both measurement and scientific objectives) The objective is to obtain spatially-resolved high signal/noise images of Saturn with the UVIS EUV and FUV spectrometers. This data will be used to look for latitudinal gradients in acetylene and other hydrocarbons. Spectra of polar aerosols at a variety of phase angles will help constrain aerosol size distribution. Description of Activity: Orientation and pointing: Point the center of the FOV to the illuminated part of Saturn. The optimal orientation will depend on the phase angle. Possibilities include (1) slit aligned parallel to the equator to capture center-to-limb variations over a narrow latitude band, (2) slit aligned perpendicular to the equator to allow the planet to rotate under the slit to build a more-or-less square image near the subspacecraft longitude, or (3) slit aligned parallel to the limb to capture a range of latitudes near the limb. The slit will either be fixed pointing at a specific longitude relative to the sub-spacecraft longitude to let the planet rotate under the slit, or scanned at a rate of 4 micro-radians per second perpendicular to the slit direction (i.e. around the spacecraft Z axis) to build up a two-dimensional image. Turn on EUV and FUV using the narrow slits. Begin 250-second integrations lasting N hours where N is to be determined by how much time is available or by how long it takes to build up an image of the desired size. At a scan rate of 4 micro-radians per second it takes 2500 seconds to scan 10 mrad. A square image 64 milli-radians long in the direction perpendicular to the slit takes 4.4 hours. The UVIS internal windowing and binning will preserve full spatial/spectral resolution. The total number of pixels per integration is 2*1024*64= 131072. The data rate with SQRT9 compression is 9*131072/250s = 4.72 Kbit/s. Activity Time Period: (window when the activity can take place) 1) Saturn Distance 2.0-2.2e+06 km Phase 0-45 Start date/time End date/time 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 22:00:59.94 06:03:11.86 18:18:33.78 13:44:19.77 16:39:50.22 12:45:31.78 05:31:49.77 12:46:47.91 08:10:47.08 13:57:43.74 14:35:28.63 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 JUN JUL JUL SEP OCT OCT NOV NOV DEC DEC DEC 17 02 25 03 05 29 24 28 10 14 28 Duration (max = 10 hr.) 03:15:28.15 5.24 12:36:25.76 6.55 09:30:12.97 15.19 06:14:43.96 16.51 12:23:47.83 19.73 08:22:54.38 19.62 03:11:54.40 45.67 10:27:38.84 45.68 21:20:40.60 61.16 03:08:05.04 61.17 23:49:52.47 105.24 02:14:08.24 15:23:03.43 07:26:34.23 12:12:25.15 01:47:32.56 22:08:17.93 13:44:36.64 22:08:21.64 01:49:27.38 15:56:31.28 23:50:29.24 18:51:20.17 04:44:42.02 23:26:58.95 09:43:48.21 04:13:24.04 15:16:32.00 09:23:39.68 22:23:16.53 2004 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 NOV JAN FEB FEB MAR MAR MAR APR APR APR APR MAY MAY MAY JUN JUN JUN JUL JUL 25 12 13 22 05 14 25 05 10 20 28 09 16 27 03 14 21 02 10 14:38:34.56 06:09:49.91 00:16:12.59 11:51:03.67 01:23:31.82 21:40:02.56 13:17:27.01 21:32:16.82 01:14:12.56 22:37:05.54 06:31:44.24 01:18:53.87 11:12:05.54 05:51:39.51 16:07:39.70 10:31:35.70 21:33:23.11 15:26:51.34 04:25:33.56 JUN JUL JUL SEP OCT OCT NOV NOV DEC DEC DEC 16 02 24 02 04 28 22 26 08 11 24 Phase 45-90 2004 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 NOV JAN FEB FEB MAR MAR MAR APR APR APR APR MAY MAY MAY JUN JUN JUN JUL JUL 25 11 12 21 04 13 24 03 08 19 26 07 15 25 02 13 20 01 08 12.41 14.78 16.83 23.64 23.60 23.53 23.55 47.40 47.41 30.68 30.69 30.46 30.46 30.41 30.40 30.30 30.28 30.05 30.04 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2006 2006 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 JUL JUL AUG AUG AUG AUG SEP SEP SEP OCT OCT OCT NOV DEC JAN FEB APR APR MAY JUN JUN JUN JUN JUL JUL AUG SEP OCT NOV DEC 19 27 06 14 25 29 10 18 28 06 16 24 22 19 12 20 15 30 16 01 04 17 21 02 15 24 25 19 12 28 16:01:07.82 05:44:56.53 23:17:20.05 11:47:52.45 11:18:41.43 15:21:17.91 02:23:18.83 02:29:15.31 11:03:21.60 06:54:21.79 17:33:50.31 01:19:29.20 14:34:04.92 22:36:33.78 04:04:31.05 20:20:21.05 12:17:12.12 15:35:45.39 05:32:00.29 01:00:06.40 23:59:23.81 03:15:28.02 08:06:27.71 12:36:26.07 17:16:04.09 23:38:07.85 18:57:13.84 07:39:05.77 07:45:53.08 23:49:52.44 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2006 2006 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 JUL JUL AUG AUG AUG AUG SEP SEP SEP OCT OCT OCT NOV DEC JAN FEB APR MAY MAY JUN JUN JUN JUN JUL JUL AUG SEP OCT NOV DEC 20 28 08 15 27 31 11 19 29 07 17 25 23 20 13 21 18 05 21 03 07 18 23 03 16 25 26 20 13 29 21:57:46.90 29.94 11:42:20.05 29.96 05:22:34.86 30.09 17:54:34.31 30.11 10:30:58.46 47.20 14:34:39.76 47.22 06:29:12.53 28.10 06:35:54.38 28.11 15:37:18.64 28.57 11:28:09.57 28.56 23:34:58.83 30.02 07:19:51.42 30.01 08:18:41.77 17.74 16:50:54.90 18.24 00:31:01.79 20.44 11:45:03.11 15.41 06:00:08.97 65.72 07:54:26.69 112.31 21:03:12.51 135.52 02:45:26.77 49.76 01:45:15.66 49.76 18:22:37.16 39.12 04:28:38.27 44.37 02:34:14.83 13.96 13:47:07.97 20.52 14:49:38.59 15.19 11:26:02.54 16.48 03:22:45.22 19.73 03:23:18.45 19.62 12:33:38.44 12.73 2004 2004 2005 2005 2005 2005 2006 JUL DEC JAN NOV DEC DEC MAR 04 04 21 03 02 30 16 12:13:33.72 00:27:48.50 00:29:57.12 20:32:43.44 10:15:51.19 00:50:46.05 13:54:26.11 Phase 90-135 2004 2004 2005 2005 2005 2005 2006 JUL DEC JAN NOV DEC DEC MAR 04 03 20 03 01 29 15 01:30:08.58 09:41:09.54 07:40:09.97 02:48:23.25 16:01:04.16 04:24:14.38 17:37:16.48 10.72 14.78 16.83 17.74 18.25 20.44 20.29 2006 APR 24 09:50:47.28 2006 MAY 17 06:51:52.71 2006 JUN 25 22:57:35.00 2006 APR 25 01:12:04.13 2006 MAY 18 03:05:04.38 2006 JUN 26 14:18:11.69 15.35 20.22 15.34 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 15.44 20.29 11.38 15.34 20.25 20.25 20.10 6.46 20.16 1.88 Phase 135-160 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 JAN MAR MAR MAY JUL JUL JUL AUG AUG SEP 21 01 24 26 04 18 28 12 21 05 07:30:54.38 17:50:59.63 23:28:28.97 08:20:04.07 19:37:50.43 19:21:18.76 05:03:34.57 08:00:43.35 04:03:19.75 09:08:24.90 JAN MAR MAR MAY JUL JUL JUL AUG AUG SEP 21 02 25 26 05 19 29 12 22 05 22:57:07.64 14:08:12.96 10:51:08.69 23:40:44.70 15:53:06.17 15:36:34.50 01:09:39.38 14:28:29.94 00:12:46.42 11:01:00.86 Saturn Distance 1.0-1.1e+06 km Phase 0-45 Start date/time Duration End date/time (max = 10 hr.) 2004 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 NOV JAN FEB MAR MAR APR MAY MAY JUN JUN JUL JUL AUG SEP 27 14 15 07 28 13 01 19 06 24 13 31 18 03 16:27:18.98 12:30:52.89 09:51:20.16 19:55:45.73 07:46:12.34 08:13:14.01 07:54:03.76 12:30:56.38 17:23:02.58 22:43:05.87 05:26:19.56 12:39:39.84 18:58:08.75 23:37:30.82 2004 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 NOV JAN FEB MAR MAR APR MAY MAY JUN JUN JUL JUL AUG SEP 27 14 15 08 28 13 01 19 06 25 13 31 19 04 21:28:39.38 17:28:42.96 14:56:50.20 01:01:02.60 12:51:20.16 13:27:11.60 13:11:12.57 17:48:05.19 22:40:02.33 04:00:04.80 10:43:13.56 17:56:27.25 00:14:56.16 02:43:35.23 5.02 4.96 5.09 5.09 5.09 5.23 5.29 5.29 5.28 5.28 5.28 5.28 5.28 3.10 2005 2005 2005 2005 2005 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 SEP OCT OCT NOV DEC FEB FEB MAR MAR APR APR MAY MAY JUN JUN JUL AUG OCT OCT NOV DEC DEC JAN JAN JAN FEB FEB MAR MAR MAR APR APR APR MAY MAY MAY MAY MAY MAY MAY 22 10 28 25 23 03 21 09 25 10 26 12 28 13 29 22 31 01 25 18 04 20 05 17 29 10 22 03 14 25 03 13 22 02 11 15 19 23 27 30 05:08:30.43 10:22:54.26 07:07:49.37 19:14:10.44 04:40:08.46 03:07:34.63 04:58:45.00 11:25:50.16 13:27:10.12 13:55:02.93 13:37:26.35 12:54:16.96 12:02:10.76 11:03:03.30 10:29:12.57 07:13:50.35 00:20:35.29 22:34:47.14 18:35:12.93 18:28:29.91 17:26:52.10 16:03:08.24 14:06:23.92 11:54:10.45 10:21:16.24 08:53:18.32 09:29:56.95 22:22:17.22 13:45:57.80 05:14:38.78 17:16:39.89 07:26:14.10 20:44:18.88 09:47:46.83 23:01:43.05 17:58:55.27 20:18:41.69 17:05:06.46 19:26:38.51 14:12:45.94 2005 2005 2005 2005 2005 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 SEP OCT OCT NOV DEC FEB FEB MAR MAR APR APR MAY MAY JUN JUN JUL AUG OCT OCT NOV DEC DEC JAN JAN JAN FEB FEB MAR MAR MAR APR APR APR MAY MAY MAY MAY MAY MAY MAY 22 10 28 26 23 03 21 09 25 10 26 12 28 13 29 22 31 02 25 18 04 20 05 17 29 10 22 04 14 25 04 13 23 02 12 16 20 24 28 31 10:16:19.56 15:31:11.38 12:05:01.47 00:12:05.33 09:40:08.46 21:17:37.14 23:09:02.48 23:02:10.10 22:15:13.92 21:10:37.91 19:57:03.82 18:38:56.28 17:25:36.52 16:17:44.37 15:38:48.02 12:03:38.11 05:09:46.63 03:24:53.42 23:31:16.20 23:23:38.86 22:38:03.68 21:23:26.75 19:45:59.23 18:09:32.95 16:36:25.29 15:06:36.82 15:42:21.40 05:26:23.31 20:50:00.59 12:17:48.91 01:37:26.81 15:49:08.59 05:07:19.13 18:10:23.21 07:23:30.87 02:09:14.16 05:55:15.52 01:35:11.04 05:02:32.55 01:28:42.04 5.13 5.14 4.95 4.97 5.00 18.17 18.17 11.61 8.80 7.26 6.33 5.74 5.39 5.24 5.16 4.83 4.82 4.84 4.93 4.92 5.19 5.34 5.66 6.26 6.25 6.22 6.21 7.07 7.07 7.05 8.35 8.38 8.38 8.38 8.36 8.17 9.61 8.50 9.60 11.27 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 JUN JUN JUN JUN JUN JUN JUN JUN JUL JUL JUL JUL JUL JUL JUL JUL JUL AUG AUG AUG 03 06 10 13 18 20 25 28 02 05 09 12 16 19 23 26 30 01 06 08 19:10:19.94 16:56:07.13 21:52:45.16 19:29:08.01 00:20:03.39 21:59:00.70 02:49:30.74 00:23:45.47 05:13:44.05 02:46:51.30 08:00:53.13 02:15:21.31 08:18:35.96 02:38:58.87 08:41:45.26 03:07:15.44 09:09:03.67 15:44:03.85 01:17:52.07 11:02:10.64 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 JUN JUN JUN JUN JUN JUN JUN JUN JUL JUL JUL JUL JUL JUL JUL JUL JUL AUG AUG AUG 04 07 11 14 18 21 25 28 02 05 09 12 16 19 23 26 30 02 06 08 06:25:50.66 04:11:24.55 09:08:49.08 06:44:32.29 11:35:21.77 09:14:08.52 14:05:09.42 11:39:08.65 16:29:25.21 14:02:26.28 19:42:42.46 13:56:55.69 19:59:35.08 14:19:54.56 20:22:22.44 14:47:39.86 20:49:20.82 04:48:44.79 14:21:45.95 23:58:55.82 11.26 11.25 11.27 11.26 11.26 11.25 11.26 11.26 11.26 11.26 11.70 11.69 11.68 11.68 11.68 11.67 11.67 13.08 13.06 12.95 21:29:50.26 15:08:48.66 18:42:56.09 04:01:03.50 07:56:40.23 06:44:50.43 17:26:41.05 09:23:28.13 10:17:11.45 16:43:26.48 16:37:32.85 16:49:48.92 12:50:51.38 05:56:59.31 01:48:51.25 00:16:38.46 23:04:43.24 2005 2006 2006 2006 2006 2007 2007 2007 2007 2007 2007 2007 2007 2008 2008 2008 2008 SEP JAN FEB MAR APR JAN JAN JUN JUN OCT NOV DEC DEC JAN JAN JAN FEB 03 15 23 19 27 02 19 10 26 22 15 01 17 02 14 26 07 23:37:30.50 20:03:06.48 23:36:59.81 08:53:03.46 12:49:10.95 15:37:38.49 05:39:32.03 11:37:33.20 15:27:49.31 21:39:29.44 21:33:34.16 22:01:54.57 18:11:58.87 11:37:02.61 08:03:50.01 06:31:34.76 05:17:40.19 2.13 4.90 4.90 4.87 4.88 8.88 12.21 2.23 5.18 4.93 4.93 5.20 5.35 5.67 6.25 6.25 6.22 Phase 45-90 2005 2006 2006 2006 2006 2007 2007 2007 2007 2007 2007 2007 2007 2008 2008 2008 2008 SEP JAN FEB MAR APR JAN JAN JUN JUN OCT NOV DEC DEC JAN JAN JAN FEB 03 15 23 19 27 02 18 10 26 22 15 01 17 02 14 26 06 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 FEB FEB MAR MAR MAR APR APR APR MAY MAY MAY 18 29 10 21 30 09 18 28 07 16 24 23:42:43.07 05:44:29.46 21:13:32.94 12:43:16.48 15:50:55.86 05:56:18.49 19:08:54.60 08:14:45.22 21:30:04.28 02:09:14.48 01:35:11.40 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 FEB FEB MAR MAR MAR APR APR APR MAY MAY MAY 19 29 11 21 31 09 19 28 08 16 24 05:55:37.56 12:49:34.81 04:16:57.06 19:46:38.95 00:10:59.98 14:16:09.44 03:30:53.94 16:36:39.62 05:51:43.87 03:34:11.32 02:41:14.36 6.22 7.08 7.06 7.06 8.33 8.33 8.37 8.37 8.36 1.42 1.10 2004 2004 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2006 2006 2006 2006 2006 2006 JUL DEC JAN FEB MAR MAR APR MAY MAY JUN JUN JUL AUG AUG SEP SEP OCT OCT NOV DEC MAY MAY JUN JUL JUL JUL 02 01 17 18 11 31 16 04 22 10 28 16 03 22 07 25 13 31 29 26 20 24 29 02 22 25 08:54:36.35 03:13:07.90 22:01:45.98 17:37:50.83 03:41:17.69 15:29:44.96 14:38:39.48 17:31:59.75 22:09:04.72 03:00:13.86 08:21:18.33 15:04:23.79 22:16:34.10 04:32:26.75 03:51:18.33 12:08:24.30 17:28:33.90 15:52:50.91 04:11:15.13 13:43:16.22 21:50:54.72 01:37:53.65 01:52:15.79 05:38:16.08 10:50:52.87 14:33:21.91 3.70 1.78 4.98 5.09 5.09 5.08 5.23 5.29 5.29 5.29 5.28 5.28 5.28 5.27 5.22 5.14 5.17 3.06 3.07 1.73 4.86 4.87 4.87 4.86 1.80 5.05 Phase 90-135 2004 2004 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2005 2006 2006 2006 2006 2006 2006 JUL DEC JAN FEB MAR MAR APR MAY MAY JUN JUN JUL AUG AUG SEP SEP OCT OCT NOV DEC MAY MAY JUN JUL JUL JUL 02 01 17 18 10 31 16 04 22 09 28 16 03 21 06 25 13 31 29 26 20 23 28 02 22 25 05:12:51.72 01:26:31.13 17:03:07.15 12:32:40.54 22:36:10.69 10:25:01.83 09:25:09.19 12:14:45.19 16:51:50.15 21:43:04.23 03:04:17.75 09:47:30.62 16:59:42.58 23:15:59.81 22:38:01.21 07:00:07.05 12:18:35.41 12:49:06.17 01:07:09.71 11:59:32.06 16:59:09.48 20:45:40.42 21:00:03.80 00:46:35.57 09:02:38.62 09:30:38.64 2006 2006 2006 2006 2006 2006 2006 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 AUG AUG OCT OCT DEC DEC DEC JAN JAN FEB APR APR MAY MAY JUN JUL AUG SEP 15 18 10 13 13 16 29 14 29 17 06 22 09 25 10 19 27 28 09:29:04.60 08:30:38.91 06:02:36.00 15:44:37.78 02:43:20.95 21:54:56.71 01:21:15.71 00:21:24.04 22:57:29.20 01:45:54.76 12:20:44.49 20:54:03.06 03:29:05.02 07:57:07.33 11:37:33.20 03:57:44.81 21:03:56.93 19:52:09.12 2006 2006 2006 2006 2006 2006 2006 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 AUG AUG OCT OCT DEC DEC DEC JAN JAN FEB APR APR MAY MAY JUN JUL AUG SEP 15 18 10 13 13 17 29 14 30 17 06 23 09 25 10 19 28 29 09:57:41.69 13:32:52.25 06:07:07.68 21:59:50.54 02:44:10.31 05:16:34.14 03:53:40.84 09:02:48.98 17:05:48.92 19:02:06.39 14:31:49.46 03:13:28.39 09:14:16.96 13:21:24.12 14:39:05.85 08:46:58.72 01:53:39.96 00:43:11.67 0.48 5.04 0.08 6.25 0.01 7.36 2.54 8.69 18.14 17.27 2.18 6.32 5.75 5.40 3.03 4.82 4.83 4.85 2004 2005 2005 2005 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 DEC OCT NOV DEC JAN FEB MAR APR JUL AUG SEP SEP SEP SEP OCT OCT OCT NOV NOV 01 31 29 26 19 27 22 30 22 15 08 11 24 27 10 26 30 07 11 01:26:30.96 12:49:06.12 01:07:09.01 11:59:32.61 00:25:48.21 03:47:02.13 12:44:35.02 16:39:35.23 09:02:39.17 09:29:04.23 07:08:19.00 09:58:52.10 06:28:11.77 14:32:40.91 06:02:36.10 06:14:30.37 01:24:18.03 06:01:43.30 01:15:00.83 3.26 1.90 1.93 3.26 4.92 4.89 4.88 4.87 3.24 4.56 5.32 5.33 5.66 5.66 6.19 7.00 6.99 7.00 7.00 Phase 135-160 2004 2005 2005 2005 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 NOV OCT NOV DEC JAN FEB MAR APR JUL AUG SEP SEP SEP SEP OCT OCT OCT NOV NOV 30 31 28 26 18 26 22 30 22 15 08 11 24 27 09 25 29 06 10 22:11:06.81 10:54:53.24 23:11:12.66 08:43:40.81 19:30:47.69 22:53:24.89 07:51:59.57 11:47:31.26 05:48:29.88 04:55:18.48 01:48:54.70 04:39:07.05 00:48:34.00 08:53:00.66 23:51:13.67 23:14:46.83 18:25:09.88 23:01:31.77 18:15:08.23 2006 2006 2006 2006 2006 2006 2007 2007 2007 2007 2007 NOV NOV NOV DEC DEC DEC JAN JAN FEB MAR APR 18 22 30 04 12 28 13 29 17 21 06 22:01:42.47 17:17:48.73 20:37:56.96 15:55:41.16 19:20:08.95 18:56:02.04 20:39:34.23 22:50:41.94 00:45:28.67 02:19:45.06 14:31:49.63 2006 2006 2006 2006 2006 2006 2007 2007 2007 2007 2007 NOV NOV DEC DEC DEC DEC JAN JAN FEB MAR APR 19 23 01 04 13 29 14 29 17 21 06 Activity Duration: Depends on the constraints, usually between 30 min. and 10 hr. System Requirements: pointing +- 1 mrad power data volume Variable Data rate times time, typically between 9 and 180 Mbit. data rate 4.72 Kbit/s data mode real-time commanding 05:02:35.97 00:17:52.84 03:39:06.92 22:55:53.40 02:43:20.84 01:21:15.40 00:21:23.82 22:57:28.80 01:45:54.80 11:04:18.67 19:34:51.51 7.01 7.00 7.02 7.00 7.39 6.42 3.70 0.11 1.01 8.74 5.05 Dependence on other instrument activities: (e.g. support imaging required) Ridealong Activities: Criticality: (how important is this activity to your instrument and why) Special Requirements: Notes on Instrument Configuration: (details about the instrument configuration that you thought about when you designed the activity and you want to document) ECR or Flight Rule Reference: