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.

MAY2118A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
703521    20416 0            P006+39 2018:141:04:17:07.876  20.0 ACIS-S NONE   6.1329  39.2013  82.01  47.96 106.07 dss pspc rass
502686    19036 1          SN2017egm 2018:141:10:28:43.981  24.0 ACIS-S NONE 154.7694  46.4755 251.17  80.07 102.46 dss pspc rass
801776    20577 0     SDSSJ1458-0024 2018:141:17:41:16.820  36.4 ACIS-I NONE 224.6157  -0.4112 213.13 156.16  76.71 dss pspc rass
601323    19366 0           NGC 3992 2018:142:04:18:01.246  10.0 ACIS-S NONE 179.4064  53.3961 233.72  90.44  65.58 dss pspc rass
201182    20165 0            LHS 248 2018:142:07:31:13.488  10.0  HRC-S NONE 127.4756  26.8710 250.99  62.56  49.67 dss pspc rass
601324    19367 0           NGC 3953 2018:142:10:44:15.310  10.8 ACIS-S NONE 178.4597  52.3477 234.66  90.41  48.86 dss pspc rass
 ----     49240       CAL-ER (CTI01) 2018:142:14:16:44.913  32.0   --    --  234.0000  -7.0000 199.61 165.75  76.15   
 ----     49239       CAL-ER (PER01) 2018:142:23:36:37.445   3.0   --    --  213.6692  -9.0119 242.37 152.61  49.69   
 ----     49238       CAL-ER (PER05) 2018:143:00:57:44.400   3.0   --    --  172.5933  48.4974 239.54  88.92  70.27   
 ----     49237       CAL-ER (CTI03) 2018:143:02:56:36.893   3.0   --    --  226.5164   3.8198 207.36 152.50  64.11   
901395    19779 0 Bootes extended Cy18 2018:143:04:44:14.938  26.0 ACIS-I NONE 216.7801  34.7007 214.99 120.66  32.45 dss pspc rass
401808    18339 1     MAXI J0556-332 2018:143:12:43:31.322  31.0 ACIS-S NONE  89.2038 -33.1534 220.01  60.49 136.98 dss pspc rass
703667    21026 0          UGC 04669 2018:143:21:51:45.278   6.7 ACIS-S NONE 133.7746  18.9551 254.67  68.42  72.30 dss pspc rass
100164    18679 1            Jupiter 2018:144:00:20:05.686  40.4  HRC-I NONE 224.0969 -15.4823 249.32 163.57  95.28 dss pspc rass
703515    20410 0         J1610+1811 2018:144:12:06:36.731   9.5 ACIS-S NONE 242.5439  18.2046 177.71 141.05  79.58 dss pspc rass
590560    20656 2           G21.5-09 2018:144:15:17:42.689  10.0  HRC-I NONE 278.4055 -10.5812 110.48 142.80  77.70 dss pspc rass
590561    20657 2           G21.5-09 2018:144:18:12:59.489  10.0  HRC-S NONE 278.4057 -10.5814 110.56 142.91   0.07 dss pspc rass
703664    21023 0       LSBC F583-04 2018:144:21:33:59.910  15.0 ACIS-S NONE 238.0595  18.8097 184.87 140.25  84.78 dss pspc rass
601374    19417 0           NGC 4396 2018:145:02:12:56.314   8.2 ACIS-S NONE 186.4976  15.6942 237.55 114.76  60.48 dss pspc rass
 ----     49236       CAL-ER (CTI02) 2018:145:04:53:10.397   3.0   --    --  221.7517  -1.2326 223.36 152.36  39.84   
 ----     49235       CAL-ER (PER06) 2018:145:06:19:42.005   3.0   --    --  123.1466  69.8041 289.88  60.72  94.62   
 ----     49234       CAL-ER (PER02) 2018:145:07:46:39.440  20.0   --    --  241.2945   3.2814 181.16 155.81  96.56   
 ----     49233       CAL-ER (PER03) 2018:145:13:58:07.219   6.0   --    --  118.5836  62.6764 290.65  56.33 101.83   
 ----     49232       CAL-ER (CTI05) 2018:145:18:13:07.291   3.0   --    --  354.4999  22.8704 102.56  62.31 101.98   
503022    20329 1     PSR J1809-1917 2018:145:20:00:45.059  30.0 ACIS-I NONE 272.4415 -19.3003  99.00 151.74  90.68 dss pspc rass
801728 P1 20514 0 ClG J001037+112957 2018:146:04:57:08.182   7.0 ACIS-I NONE   2.6539  11.5230 107.74  58.14  93.98 dss pspc rass
401919    20192 3            GX 13+1 2018:146:07:29:50.907  23.0 ACIS-S HETG 273.6445 -17.1751 102.56 150.68  92.45 dss pspc rass
 ----     49231       CAL-ER (IAT01) 2018:146:14:14:50.485   0.9   --    --  303.0687 -10.7885 108.24 121.76  29.27   
402027    21092 1        sGRB180418A 2018:146:15:19:37.606  28.0 ACIS-S NONE 170.1217  24.9555 243.69  95.44 151.21 dss pspc rass
901393    19777 0 Bootes extended Cy18 2018:146:23:34:17.606  23.0 ACIS-I NONE 217.5823  34.6853 199.99 118.96  45.82 dss pspc rass
601416 P1 20350 0 SDSS J000953.09+1544 2018:147:06:39:45.255   8.0 ACIS-S NONE   2.4844  15.7189 102.50  58.08 119.82 dss pspc rass
503022    21098 1     PSR J1809-1917 2018:147:09:29:44.288  39.8 ACIS-I NONE 272.4401 -19.2984  99.00 153.21  95.18 dss pspc rass
 ----     49230       CAL-ER (CTI06) 2018:147:21:09:41.107   3.0   --    --    2.7000  10.0000 108.96  60.12  93.53   


MAY1418B


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
601326    19369 0           NGC 5985 2018:134:00:26:19.443  10.0 ACIS-S NONE 234.9429  59.3398 175.74 102.11  68.74 dss pspc rass
901390    19683 0              CDWFS 2018:134:03:40:16.443  27.0 ACIS-I NONE 218.9483  35.2222 189.99 125.14  26.38 dss pspc rass
201164    20142 1             RY Sct 2018:134:11:47:47.460  13.0 ACIS-I NONE 276.3929 -12.7012 103.72 136.00  99.08 dss pspc rass
 ----     49253       CAL-ER (CTI01) 2018:134:15:40:07.038   3.0   --    --  263.3820 -16.6631  98.60 149.26  13.31   
 ----     49252       CAL-ER (PER01) 2018:134:17:07:49.182  20.5   --    --    0.0000  13.0000 103.57  49.43  99.91   
 ----     49251       CAL-ER (CAL01) 2018:134:23:28:17.302  12.0   --    --  258.0596 -16.2345  99.61 154.55 104.86   
 ----     49250       CAL-ER (CAL01) 2018:135:03:36:36.795   1.0   --    --  211.0000  -5.5000 234.83 155.88 147.71   
 ----     49249       CAL-ER (CAL01) 2018:135:04:28:21.990   1.0   --    --  211.0000  -5.5000 234.87 155.84   0.03   
601364    19407 0           NGC 4532 2018:135:06:13:59.990   8.0 ACIS-S NONE 188.5823   6.4883 238.44 130.49  25.60 dss pspc rass
901354    19647 0              CDWFS 2018:135:08:55:22.898  25.0 ACIS-I NONE 218.5409  34.2583 185.99 125.43  56.47 dss pspc rass
502953    19605 1       Cassiopeia A 2018:135:16:25:08.228  50.0 ACIS-S NONE 350.8974  58.8369  75.07  59.21  79.15 dss pspc rass
703563 P1 20460 0 SDSS J002311.06+0035 2018:136:06:50:39.596   4.0 ACIS-S NONE   5.8118   0.5756 114.77  49.59  75.10 dss pspc rass
503004    20308 0         G344.7-0.1 2018:136:08:36:13.404  29.5 ACIS-I NONE 255.9908 -41.7349  50.00 149.97 105.29 dss pspc rass
901361    19654 0              CDWFS 2018:136:17:41:12.030  25.0 ACIS-I NONE 217.6196  33.4228 216.50 125.40 172.62 dss pspc rass
703646 P1 20897 0 SDSS J120313.10-0000 2018:137:01:05:52.030   5.0 ACIS-S NONE 180.8037   0.0108 246.37 124.89  51.29 dss pspc rass
291368    20655 2               HZ43 2018:137:02:53:44.998   2.0  HRC-I LETG 199.0973  29.1147 218.76 121.32  40.71 dss pspc rass
703670    21029 0          UGC 10017 2018:137:03:52:11.598   7.9 ACIS-S NONE 236.4104  21.4280 175.98 139.26  43.13 dss pspc rass
 ----     49248       CAL-ER (CAL01) 2018:137:06:38:24.601   3.0   --    --  263.3820 -16.6631  99.80 151.72  86.33   
 ----     49247       CAL-ER (CAL01) 2018:137:08:06:06.727  23.0   --    --  360.0000  13.0000 104.44  51.87  99.91   
 ----     49246       CAL-ER (CAL01) 2018:137:15:09:57.355  11.0   --    --  250.0000 -16.0000 104.85 164.50 112.55   
 ----     49245       CAL-ER (CAL01) 2018:137:19:48:02.134   1.0   --    --  220.5020 -33.2976 315.03 161.42 138.85   
601400    20973 0           NGC 2243 2018:137:21:36:21.968  24.0 ACIS-S NONE  97.3998 -31.2629 225.07  65.34  96.05 dss pspc rass
703565 P1 20462 0 SDSS J233317.38-0023 2018:138:04:58:19.960   7.0 ACIS-S NONE 353.3386  -0.3986 112.10  63.29 119.10 dss pspc rass
503004    21093 0         G344.7-0.1 2018:138:07:31:51.165  34.0 ACIS-I NONE 255.9904 -41.7361  50.00 151.39  96.09 dss pspc rass
201205    20987 0     ALPHA CENTAURI 2018:138:17:25:23.850   5.0  HRC-I NONE 219.8231 -60.8350 338.34 137.30  51.20 dss pspc rass
901377    19670 0              CDWFS 2018:138:19:39:24.359  27.0 ACIS-I NONE 216.5245  35.2610 189.99 122.34 158.29 dss pspc rass
703478 P1 20373 0      VHSJ2028-5740 2018:139:04:00:07.659   9.0 ACIS-S NONE 307.2237 -57.6877  85.40 116.31 158.50 dss pspc rass
503004    21094 0         G344.7-0.1 2018:139:06:55:24.659  15.0 ACIS-I NONE 255.9906 -41.7354  50.00 152.07  36.03 dss pspc rass
703479 P1 20374 0      VHSJ2048-4644 2018:139:11:32:41.659   9.0 ACIS-S NONE 312.0586 -46.7566  94.16 113.62  39.76 dss pspc rass
901384    19677 0              CDWFS 2018:139:14:50:37.154  25.7 ACIS-I NONE 218.9345  34.9328 189.99 122.94 145.91 dss pspc rass
 ----     49244       CAL-ER (CAL01) 2018:139:22:20:29.918   3.0   --    --  228.0000   8.0000 196.42 150.96  29.83   
 ----     49243       CAL-ER (PER02) 2018:139:23:51:02.279   2.0   --    --  264.6736 -20.0536  94.49 153.50 112.68   
 ----     49242       CAL-ER (CAL01) 2018:140:01:01:57.036  18.5   --    --  360.0000  13.0000 105.29  54.39  99.36   
 ----     49241       CAL-ER (CAL01) 2018:140:11:13:21.518   1.0   --    --  263.3820 -16.6631 101.57 154.72  99.91   
503004    21095 0         G344.7-0.1 2018:140:12:58:59.514  27.0 ACIS-I NONE 255.9906 -41.7353  50.00 152.95  54.05 dss pspc rass
703490 P1 20385 0      VHSJ2355-0011 2018:140:21:06:43.149   9.0 ACIS-S NONE 358.9558  -0.2031 113.26  60.60 100.02 dss pspc rass
801722    20508 0 ClG J161855+105524 2018:141:00:18:03.643  12.0 ACIS-I NONE 244.7183  10.9404 159.50 148.21 116.29 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 05/18/18



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