From owner-freja-info@plasma.kth.se Fri Apr 15 14:14 MET 1994 X-Listname: Freja Project Information mailing list Warnings-To: <> Date: Fri, 15 Apr 1994 12:02:38 GMT From: ZANETTI@AMPVX2.JHUAPL.EDU Subject: April 18 to 24 plans To: freja-info@plasma.kth.se X-Vmsmail-To: SMTP%"freja-info@plasma.kth.se" Hello from F2, SIC plan for April 18-24, 1994 The following is from a list graciously provided by Nick Lloyd. This second list does have input from FOC. I will also repeat the cancellation order from F1: 1) First ESS pass in group 2) Last PASS in group 3) Second last PASS Only one survey per day. Burst taking has been randomized somewhat and I assume F1 does the gradual trigger as before with always 20 min before LOS. The forced burst and dump are decoupled with dump always over Esrange and at LOS-8, this was neglected the first week. This does, however, cause the cited problems in the burst FSPs as pointed out by F1 for instruments using regular data for these plots, true for F2 and others. This problem can be skirted from the regular FSPs along with post-processing which is desirable given attitude, etc. corrections that have to be made. Nevertheless, from F1's Burst strategy: Burst. 2 passes/day, rotating F1, F2, F4, as usual. F1 continues using the "gradual" force trig, decreasing the trig level successively, starting at LOS-20min and ending at LOS-8min. We still do this only when F1 is used as trigger, and we reduce our trigger threshold in 5 steps from 0.3 Volts to 0 Volts. The operations of the F2 and F4 burst orbits are unchanged. Thus, the burst should be done in the following way for F1: PASS AOS+5min: Enable burst ESS LOS-Xmin: Force trig. X is given below for each burst orbit. X should always be 20min for the F1 burst orbits. ESS LOS-8min: Dump burst data. Freja and it's operations was demonstrated by F2, F3H and SSC (Zanetti, Norberg, Grahn) at the IAA International Conference on Low-Cost Planetary Missions at APL April 12-15. Larry Zanetti zanetti@jhuapl.edu 301-953-6897 301-953-6670 fax Thanks again Nick. Freja Science Plans from 1994/04/01 00:00:00 to 1994/04/30 23:59:59 using orbital elements in C:\f3c\tle\tle.363 All Universal Times are estimates for your convenience. FOC might change these values according to other parameters, like antenna change and radio silence etc. Optical observatories listed, Rabbit Lake ( 58.2N,-103.7E), Contact Don McEwen, McEwen@skisas.usask.ca Gillam ( 56.2N, 265.4E), Contact Gordon Rostoker, CANOPUS Eureka ( 80.1N, -86.4E), Contact AES Canada, et al. CASEY (-66.3N, 110.5E), Contact Australian Antarctic Division DAVIS (-68.6N, 78.0E), Contact Australian Antarctic Division MAWSON (-67.6N, 62.9E), Contact Australian Antarctic Division MACQUARIE Is (-54.5N, 158.9E), Contact Australian Antarctic Division SpyHill ( 51.0N,-114.0E), Contact Y.Sahai, sahai@phys.ucalgary.ca INPE Phot. (-22.7N, -45.0E), Contact Y.Sahai, sahai@phys.ucalgary.ca INPE Iono. ( -3.9N, -38.4E), Contact Y.Sahai, sahai@phys.ucalgary.ca ----------------------------------------------------------------------------- Monday, 1994/04/18 7384 ESS PASS High TM Burst (F2) PASS AOS +8 Arm Burst (F2) ~00:14:36 UT ESS LOS -8 Forced Trig & Dump ~00:36:26 UT 7385 ESS PASS High TM Burst (F2) PASS AOS +10 Arm Burst (F2) ~02:07:41 UT ESS LOS -8 Forced Trig & Dump ~02:23:18 UT Rabbit Lake [02:05:09-02:11:41 UT] Eureka [02:11:59-02:15:58 UT] 7386 PASS High TM Rabbit Lake [03:58:33-04:05:13 UT] Eureka [04:01:45-04:07:20 UT] 7387 PASS High TM Rabbit Lake [05:52:15-05:59:40 UT] Gillam [05:52:05-06:03:56 UT] Eureka [05:53:31-05:56:32 UT] SpyHill [05:50:20-05:58:37 UT] 7388 PASS Low TM Rabbit Lake [07:45:31-07:53:19 UT] SpyHill [07:43:33-07:55:10 UT] 7389 PASS Low TM SpyHill [09:36:48-09:48:29 UT] 7390 No Data 7391 No Data 7392 ESS Low TM 7393 ESS Low TM 7394 ESS Low TM 7395 ESS High TM Survey COARSE, ORBIT Start UTC = ESS LOS, [~20:38:29 UT] End UTC = ESS AOS, [~22:07:06 UT] 7396 ESS High TM Dump Survey 7397 ESS PASS High TM Burst (F2) PASS AOS +12 Arm Burst (F2) ~23:54:51 UT ESS LOS -8 Forced Trig & Dump ~00:12:42 UT ----------------------------------------------------------------------------- Tuesday, 1994/04/19 7398 ESS PASS High TM Burst (F4) PASS AOS +8 Arm Burst (F4) ~01:41:38 UT ESS LOS -8 Forced Trig & Dump ~01:59:57 UT Rabbit Lake [01:41:09-01:47:31 UT] Eureka [01:48:20-01:51:53 UT] 7399 PASS SYOWA High TM Rabbit Lake [03:34:22-03:41:02 UT] Eureka [03:37:52-03:43:27 UT] 7400 PASS High TM Rabbit Lake [05:28:08-05:35:24 UT] Eureka [05:29:23-05:32:56 UT] 7401 PASS Low TM Rabbit Lake [07:21:22-07:29:18 UT] SpyHill [07:19:28-07:30:49 UT] 7402 PASS Low TM SpyHill [09:12:36-09:24:35 UT] 7403 No Data 7404 No Data 7405 ESS Low TM 7406 ESS Low TM 7407 ESS Low TM 7408 ESS High TM Survey COARSE, ORBIT Start UTC = 20:27:14 UT, [~07:47:14 LT] End UTC = 20:27:44 UT 7409 ESS High TM Dump Survey 7410 ESS PASS High TM Burst (F4) PASS AOS +10 Arm Burst (F4) ~23:29:09 UT ESS LOS -8 Forced Trig & Dump ~23:48:57 UT ----------------------------------------------------------------------------- Wednesday, 1994/04/20 7411 ESS PASS High TM Burst (F4) PASS AOS +12 Arm Burst (F4) ~01:21:37 UT ESS LOS -8 Forced Trig & Dump ~01:36:32 UT Rabbit Lake [01:17:12-01:23:20 UT] Eureka [01:24:43-01:27:45 UT] 7412 PASS SYOWA High TM Rabbit Lake [03:10:11-03:16:52 UT] Eureka [03:14:00-03:19:33 UT] 7413 PASS High TM Rabbit Lake [05:04:00-05:11:09 UT] Eureka [05:05:18-05:09:17 UT] 7414 PASS Low TM Rabbit Lake [06:57:13-07:05:14 UT] SpyHill [06:55:23-07:06:27 UT] 7415 PASS Low TM SpyHill [08:48:26-09:00:38 UT] 7416 PASS Low TM 7417 No Data 7418 No Data 7419 ESS Low TM 7420 ESS Low TM 7421 ESS High TM Survey MEDIUM, EQUATOR Start UTC = 19:58:43 UT, [~07:33:04 LT] End UTC = 20:08:43 UT 7422 ESS High TM Dump Survey 7423 ESS PASS High TM Burst (F4) PASS AOS +12 Arm Burst (F4) ~23:07:28 UT ESS LOS -8 Forced Trig & Dump ~23:25:11 UT ----------------------------------------------------------------------------- Thursday, 1994/04/21 7424 ESS PASS High TM Burst (F1) PASS AOS +5 Arm Burst (F1) ~00:50:37 UT ESS LOS -8 Forced Trig & Dump ~01:13:05 UT Rabbit Lake [00:53:17-00:59:08 UT] Eureka [01:01:13-01:03:31 UT] 7425 PASS SYOWA High TM Rabbit Lake [02:45:59-02:52:43 UT] Eureka [02:50:08-02:55:39 UT] 7426 PASS High TM Rabbit Lake [04:39:51-04:46:53 UT] Eureka [04:41:16-04:45:36 UT] 7427 PASS Low TM Rabbit Lake [06:33:05-06:41:08 UT] SpyHill [06:31:17-06:42:03 UT] 7428 PASS Low TM Gillam [08:27:46-08:34:19 UT] SpyHill [08:24:17-08:36:38 UT] 7429 PASS Low TM 7430 No Data 7431 No Data 7432 ESS Low TM 7433 ESS Low TM 7434 ESS High TM Survey MEDIUM, EQUATOR Start UTC = 19:34:57 UT, [~07:18:56 LT] End UTC = 19:44:57 UT 7435 ESS High TM Dump Survey 7436 ESS PASS High TM Burst (F1) PASS AOS +5 Arm Burst (F1) ~22:36:50 UT ESS LOS -8 Forced Trig & Dump ~23:01:23 UT Gillam [22:38:20-22:43:33 UT] ----------------------------------------------------------------------------- Friday, 1994/04/22 7437 ESS PASS High TM Burst (F1) PASS AOS +5 Arm Burst (F1) ~00:27:39 UT ESS LOS -8 Forced Trig & Dump ~00:49:36 UT Rabbit Lake [00:29:25-00:34:53 UT] Gillam [00:28:10-00:38:14 UT] Eureka [00:37:57-00:39:03 UT] 7438 PASS SYOWA High TM Rabbit Lake [02:21:49-02:28:34 UT] Gillam [02:21:44-02:32:00 UT] Eureka [02:26:18-02:31:43 UT] 7439 PASS High TM Rabbit Lake [04:15:42-04:22:38 UT] Gillam [04:15:35-04:26:50 UT] Eureka [04:17:15-04:21:52 UT] 7440 PASS Low TM Rabbit Lake [06:08:57-06:17:01 UT] Gillam [06:08:46-06:21:03 UT] SpyHill [06:07:12-06:17:38 UT] 7441 PASS Low TM Rabbit Lake [08:03:47-08:07:21 UT] Gillam [08:03:12-08:11:00 UT] SpyHill [08:00:08-08:12:34 UT] 7442 PASS Low TM 7443 No Data 7444 No Data 7445 ESS Low TM 7446 ESS Low TM 7447 ESS High TM Survey MEDIUM, SOUTHPOLE Start UTC = 19:38:29 UT, [~08:44:17 MLT] End UTC = 19:48:29 UT 7448 ESS High TM Dump Survey 7449 ESS PASS High TM Burst (F1) PASS AOS +12 Arm Burst (F2) ~22:20:15 UT ESS LOS -8 Forced Trig & Dump ~22:37:34 UT Gillam [22:15:08-22:18:49 UT] 7450 ESS PASS High TM Burst (F1) PASS AOS +16 Arm Burst (F2) ~00:13:41 UT ESS LOS -8 Forced Trig & Dump ~00:26:04 UT Rabbit Lake [00:05:38-00:10:36 UT] Gillam [00:04:08-00:14:05 UT] ----------------------------------------------------------------------------- Saturday, 1994/04/23 7451 PASS SYOWA High TM Rabbit Lake [01:57:39-02:04:25 UT] Gillam [01:57:32-02:07:47 UT] Eureka [02:02:28-02:07:47 UT] 7452 PASS High TM Rabbit Lake [03:51:33-03:58:23 UT] Gillam [03:51:26-04:02:32 UT] Eureka [03:53:15-03:58:06 UT] 7453 PASS Low TM Rabbit Lake [05:44:50-05:52:52 UT] Gillam [05:44:39-05:56:57 UT] SpyHill [05:43:06-05:53:11 UT] 7454 PASS Low TM Rabbit Lake [07:39:09-07:43:59 UT] Gillam [07:38:45-07:47:31 UT] SpyHill [07:36:01-07:48:28 UT] 7455 PASS Low TM 7456 No Data 7457 No Data 7458 ESS Low TM 7459 ESS Low TM 7460 ESS Low TM Survey MEDIUM, SOUTHPOLE Start UTC = 19:14:41 UT, [~08:29:41 MLT] End UTC = 19:24:41 UT 7461 ESS High TM Dump Survey 7462 ESS PASS High TM Burst (F2) PASS AOS +20 Arm Burst (F2) ~22:04:44 UT ESS LOS -8 Forced Trig & Dump ~22:13:43 UT 7463 ESS PASS High TM Burst (F2) PASS AOS +18 Arm Burst (F2) ~23:51:45 UT ESS LOS -8 Forced Trig & Dump ~00:02:31 UT Rabbit Lake [23:41:56-23:46:15 UT] Gillam [23:40:07-23:49:55 UT] ----------------------------------------------------------------------------- Sunday, 1994/04/24 7464 PASS High TM Rabbit Lake [01:33:30-01:40:17 UT] Gillam [01:33:20-01:43:35 UT] Eureka [01:38:39-01:43:50 UT] 7465 PASS High TM Rabbit Lake [03:27:23-03:34:08 UT] Gillam [03:27:17-03:38:14 UT] Eureka [03:29:17-03:34:20 UT] 7466 PASS High TM Rabbit Lake [05:20:43-05:28:41 UT] Gillam [05:20:32-05:32:49 UT] 7467 PASS Low TM Rabbit Lake [07:14:41-07:20:25 UT] Gillam [07:14:23-07:23:56 UT] SpyHill [07:11:54-07:24:20 UT] 7468 PASS Low TM SpyHill [09:06:23-09:14:39 UT] 7469 No Data 7470 No Data 7471 ESS Low TM 7472 ESS Low TM 7473 ESS Low TM 7474 ESS High TM Survey COARSE, ORBIT Start UTC = ESS LOS, [~20:06:33 UT] End UTC = ESS AOS, [~21:35:04 UT] 7475 ESS High TM Dump Survey 7476 ESS PASS High TM Burst (F4) PASS AOS +12 Arm Burst (F2) ~23:21:51 UT ESS LOS -8 Forced Trig & Dump ~23:38:55 UT Rabbit Lake [23:18:22-23:21:47 UT] Gillam [23:16:09-23:25:45 UT]