Chandra X-Ray Observatory
	(CXC)

Short-term Schedule

Every week an observing request (OR) list is generated from the long term schedule (LTS) target list for that week, plus some unconstrained (pool) targets. This OR list is over-subscribed to allow an efficient schedule to be generated. The short-term schedule consists of those targets from the OR which will actually be observed; those targets not scheduled are then returned to the pool to be selected for future weeks.

The short-term schedule is the plan for a week's observing time. If there are no interruptions, all observations will be carried out close to the times listed. However, schedules can be interrupted by TOO observations, by solar-flare particle events, and by operational difficulties. This schedule is not a guarantee that the observation will occur when indicated.

NB: RA and DEC listings are for the star tracker, not the target position!

The RA and DEC on the short term pages are derived from the spacecraft quaternion. So the coordinates are that of the aspect camera, not the HRMA. The offset between the two coordinate systems is roughly 1.5 arcminutes in both y and z.

There is a link to previous weeks' short-term schedules at the bottom of this page.

OCT2521B


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     45982       CAL-ER (IAT02) 2021:298:02:31:37.494   0.9   --    --  156.9287  19.7259  62.87  60.64  72.56   
201394    24309 0 2MASS J04351354+2008 2021:298:03:20:58.283  29.5 ACIS-S NONE  68.8166  20.1174  95.30 141.41  81.73 dss pspc rass
601520 P1 23619 0          PGC025363 2021:298:12:03:19.255  14.0 ACIS-S NONE 135.4414   0.5029  74.00  74.81  68.32 dss pspc rass
601574    26184 0          UGC 02432 2021:298:16:32:23.470  11.0 ACIS-I NONE  44.3677  10.1219  80.04 165.70  91.07 dss pspc rass
 ----     45981       CAL-ER (IAT03) 2021:298:20:00:36.403   0.9   --    --   40.2362   0.2980  39.58 164.33  42.15   
503209    23534 2          SNR 1987A 2021:298:20:48:58.720  28.0 ACIS-S HETG  83.8407 -69.2888  51.96  90.28  77.35 dss pspc rass
704245    24262 0 DELS J041128.63-0907 2021:299:05:05:46.320  29.0 ACIS-S NONE  62.8665  -9.1499  56.70 141.23  64.55 dss pspc rass
201394    24310 0 2MASS J04351354+2008 2021:299:13:35:28.655  29.0 ACIS-S NONE  68.8171  20.1167  95.30 142.83  48.90 dss pspc rass
704279 P1 24738 0 [MOK2016b] HSC J0921 2021:299:22:10:31.942  21.8 ACIS-S NONE 140.3386   0.1031  73.00  71.33  73.00 dss pspc rass
 ----     45980       CAL-ER (PER32) 2021:300:04:44:23.465   3.0   --    --  106.0000 -60.0000  70.38  86.48  67.77   
 ----     45979       CAL-ER (PER19) 2021:300:06:08:07.794   3.0   --    --   38.0528   3.1625  33.66 168.41  82.07   
 ----     45978       CAL-ER (PER20) 2021:300:08:15:00.000   3.0   --    --   75.0000 -31.0000  50.39 119.55  49.52   
 ----     45977       CAL-ER (PER22) 2021:300:09:44:23.262   3.0   --    --   71.5038  52.5310 126.30 129.15 107.49   
 ----     45976       CAL-ER (PER23) 2021:300:11:07:30.216   3.0   --    --  157.4950  10.8099  63.97  58.76  79.27   
 ----     45975       CAL-ER (PER24) 2021:300:12:31:42.315   3.0   --    --  101.1965 -53.7853  65.94  91.30  84.16   
 ----     45974       CAL-ER (PER25) 2021:300:13:53:16.206   3.0   --    --   39.6802  -1.6940  28.03 163.46  72.29   
503209    24295 2          SNR 1987A 2021:300:15:54:48.983  30.0 ACIS-S HETG  83.8390 -69.2885  50.16  90.19  74.19 dss pspc rass
201507 P1 26168 0 2RXS J021157.9+04214 2021:301:00:48:29.265  11.0 ACIS-S NONE  32.9812   4.3544   4.95 171.27  81.77 dss pspc rass
503209    24654 2          SNR 1987A 2021:301:04:25:23.887  33.0 ACIS-S HETG  83.8337 -69.2871  43.97  90.14  81.35 dss pspc rass
802016 P1 26166 0 RMJ022905.6+043003.1 2021:301:14:09:26.949   9.9 ACIS-I NONE  37.2853   4.5012  37.00 170.17  83.48 dss pspc rass
704581 P1 26164 0 SDSSJ011623.04+14294 2021:301:17:39:48.057  14.5 ACIS-S NONE  19.0882  14.5134 266.49 166.56 134.33 dss pspc rass
402236    26169 2     MAXI J1848-015 2021:301:22:18:32.317  21.0 ACIS-S NONE 282.1960  -1.4913 283.72  69.35  97.07 dss pspc rass
503212    24426 0       PSR B2224+65 2021:302:04:41:15.181  37.4 ACIS-I NONE 336.3981  65.5961 244.59 115.53  77.46 dss pspc rass
802015 P1 26165 0 RMJ020146.6+182552.6 2021:302:15:33:20.141  10.1 ACIS-I NONE  30.4322  18.4326 214.13 174.18  59.62 dss pspc rass
 ----     45973       CAL-ER (PER26) 2021:302:18:43:59.318   3.0   --    --   21.0000  20.0000 244.72 166.09  28.90   
 ----     45972       CAL-ER (PER27) 2021:302:21:30:00.000   3.0   --    --  329.8273   6.3492 282.11 116.50  56.75   
 ----     45971       CAL-ER (PER30) 2021:303:01:00:00.000   3.0   --    --   21.0000  16.0000 261.47 167.04  51.90   
 ----     45970       CAL-ER (PER31) 2021:303:04:00:00.000   3.0   --    --  314.0000   3.0000 283.43 100.13  67.66   
704200    23788 1 eRASSt J234403.0-352 2021:303:07:15:59.176  13.0 ACIS-S NONE 355.9858 -35.4373 316.46 118.79  58.22 dss pspc rass
402236    23458 2     MAXI J1848-015 2021:303:11:25:21.080  14.5 ACIS-S NONE 282.1971  -1.4888 272.50  67.92  77.39 dss pspc rass
802017    26186 0 RMJ010721.8+141623.6 2021:303:16:03:44.107  21.8 ACIS-I NONE  16.8311  14.2724 271.06 162.61  95.48 dss pspc rass
402236    26187 2     MAXI J1848-015 2021:303:22:43:46.489  23.0 ACIS-S NONE 282.1968  -1.4885 273.00  67.50  95.43 dss pspc rass
704238    23826 0 DES J040559.80-33085 2021:304:05:51:50.613  25.0 ACIS-S NONE  61.4849 -33.1663  32.15 126.52 131.56 dss pspc rass
704585    26183 0    IGR J02341+0228 2021:304:13:13:18.205  10.0 ACIS-S NONE  38.4412   2.4736  25.00 167.93  41.76 dss pspc rass
201510    26185 0          V* CE Ant 2021:304:16:41:54.284   5.0 ACIS-S NONE 160.6401 -33.6891 100.01  53.29 118.96 dss pspc rass
503251    25061 0      SNR 0519-69.0 2021:304:18:33:20.961  25.6 ACIS-S NONE  79.8733 -69.0537  42.35  91.06  56.75 dss pspc rass


OCT2521A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     45981       CAL-ER (PER03) 2021:297:14:26:49.567   0.9   --    --   36.1000  18.0000 130.67 170.76  46.37   
 ----     45980       CAL-ER (PER01) 2021:297:15:14:45.897   3.0   --    --  125.2000  56.9000  78.33  96.57  75.40   
 ----     45979       CAL-ER (PER17) 2021:297:16:45:00.000   3.0   --    --  230.0000  75.0000 339.51  87.84  39.40   
 ----     45978       CAL-ER (PER04) 2021:297:18:40:00.000   3.0   --    --   28.4000  18.0000 186.60 173.87  86.01   
 ----     45977       CAL-ER (CTI05) 2021:297:21:37:39.594   2.0   --    --  215.0000  50.0000 353.61  62.17 111.76   
402236    23458 2     MAXI J1848-015 2021:298:00:28:34.602  24.0 ACIS-S NONE 282.1966  -1.4893 275.60  72.93  86.88 dss pspc rass
704581    26164 0 SDSSJ011623.04+14294 2021:298:07:45:41.118  15.0 ACIS-S NONE  19.0869  14.5150 268.00 169.49  97.24 dss pspc rass
402236    26169 2     MAXI J1848-015 2021:298:12:32:47.636  32.0 ACIS-S NONE 282.1964  -1.4889 275.60  72.49  97.24 dss pspc rass
503212    24426 0       PSR B2224+65 2021:298:21:58:49.959  39.0 ACIS-I NONE 336.3975  65.5970 240.96 115.67  77.42 dss pspc rass
802015    26165 0 RMJ020146.6+182552.6 2021:299:09:17:57.736  10.0 ACIS-I NONE  30.4345  18.4382 181.79 174.06  61.33 dss pspc rass
801923    24484 0     MOO J1059+5454 2021:299:12:42:25.615  30.0 ACIS-I NONE 164.9870  54.8917  39.97  77.66 100.34 dss pspc rass
704227    23815 0       LEDA 3096766 2021:299:21:33:28.893  24.0 ACIS-I NONE  48.2809  41.3334 147.47 147.66  70.00 dss pspc rass
 ----     45976       CAL-ER (CTI01) 2021:300:04:35:10.880   1.0   --    --   36.1000  18.0000 138.72 173.09  29.53   
 ----     45975       CAL-ER (PER08) 2021:300:05:23:55.528   1.0   --    --  125.0000  57.0000  80.05  98.77  74.60   
 ----     45974       CAL-ER (PER07) 2021:300:06:23:01.384   3.0   --    --  322.0000   7.0000 281.01 111.46 121.19   
 ----     45973       CAL-ER (PER06) 2021:300:09:00:00.000   1.0   --    --   20.4000   8.0000 294.45 167.97  61.49   
 ----     45972       CAL-ER (PER05) 2021:300:09:50:34.959   3.0   --    --   33.8500   4.7000  14.89 171.60  82.87   
 ----     45971       CAL-ER (CTI09) 2021:300:13:30:29.328   3.0   --    --   33.8500   4.7000  13.92 171.57   0.96   
503209    23534 2          SNR 1987A 2021:300:15:54:48.983  29.0 ACIS-S HETG  83.8489 -69.2928  60.98  90.19  82.16 dss pspc rass
201506    26167 0 2RXS J022824.3+05380 2021:301:00:31:55.636  20.0 ACIS-S NONE  37.0826   5.6209  16.00 171.15  82.25 dss pspc rass
503209    24295 2          SNR 1987A 2021:301:06:39:02.294  30.0 ACIS-S HETG  83.8487 -69.2935  60.98  90.13  82.25 dss pspc rass
802016    26166 0 RMJ022905.6+043003.1 2021:301:15:32:33.812  10.0 ACIS-I NONE  37.2820   4.4947  16.00 170.18  81.11 dss pspc rass
201507    26168 0 2RXS J021157.9+04214 2021:301:18:38:03.812  10.0 ACIS-S NONE  32.9771   4.3542   0.35 171.04  16.55 dss pspc rass
503209    24654 2          SNR 1987A 2021:301:21:59:00.013  31.0 ACIS-S HETG  83.8487 -69.2937  60.98  90.08  84.47 dss pspc rass
704200    23788 1 eRASSt J234403.0-352 2021:302:07:08:30.613  13.0 ACIS-S NONE 355.9859 -35.4377 317.16 119.59  61.94 dss pspc rass
704238    23826 0 DES J040559.80-33085 2021:302:11:14:55.653  25.7 ACIS-S NONE  61.4863 -33.1659  34.32 126.26  64.13 dss pspc rass
 ----     45970       CAL-ER (CTI08) 2021:302:18:50:07.997   1.0   --    --   37.0000  11.0000  48.50 176.02  53.34   
 ----     45969       CAL-ER (PER10) 2021:302:19:37:26.921   1.0   --    --   41.7000  17.3000 115.13 171.69  68.17   
 ----     45968       CAL-ER (PER12) 2021:302:22:05:00.000   4.0   --    --   65.7000  53.3000 135.71 133.14  53.28   
 ----     45967       CAL-ER (PER09) 2021:302:23:52:44.043   1.0   --    --    2.0000  13.0000 275.00 148.73 113.55   
 ----     45966       CAL-ER (PER16) 2021:303:00:33:40.624   1.0   --    --   25.5000   8.4000 302.59 169.98  39.55   
 ----     45965       CAL-ER (PER13) 2021:303:01:09:37.677   1.0   --    --   29.0000   7.0000 323.05 171.58  21.26   
 ----     45964       CAL-ER (PER14) 2021:303:02:05:45.355   2.0   --    --   37.0000  12.7000  69.21 177.12 107.83   
 ----     45963       CAL-ER (PER15) 2021:303:04:10:00.000   2.0   --    --  160.0000 -15.0000  84.01  52.49 125.01   
 ----     45962       CAL-ER (CTI10) 2021:303:04:53:04.176   3.0   --    --  160.0000 -15.0000  83.99  52.51   0.02   
201394    24309 0 2MASS J04351354+2008 2021:303:07:15:59.176  28.5 ACIS-S NONE  68.8191  20.1134  95.30 146.56  96.32 dss pspc rass
704214    23802 0        PG 1115+080 2021:303:15:48:06.821  19.0 ACIS-S NONE 169.5708   7.7419  64.50  49.80  97.32 dss pspc rass
201394    24310 0 2MASS J04351354+2008 2021:303:21:41:54.463  27.5 ACIS-S NONE  68.8195  20.1128  95.30 147.15  97.32 dss pspc rass
704279 P1 24738 0 [MOK2016b] HSC J0921 2021:304:05:51:55.328  20.0 ACIS-S NONE 140.3402   0.0992  75.38  75.47  72.81 dss pspc rass
704245    24262 0 DELS J041128.63-0907 2021:304:11:58:25.377  29.0 ACIS-S NONE  62.8631  -9.1529  49.53 144.24  79.50 dss pspc rass
503251    25061 0      SNR 0519-69.0 2021:304:20:31:25.092  25.0 ACIS-S NONE  79.8726 -69.0542  42.27  91.06  63.73 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 10/24/21



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