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.

MAY2818A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     49229       CAL-ER (PER01) 2018:147:23:54:01.424   3.0   --    --   15.0000  47.0000  74.70  47.24  47.28   
 ----     49228       CAL-ER (PER02) 2018:148:02:00:00.000   2.0   --    --  255.3000   0.4000 155.01 155.83 109.56   
 ----     49227       CAL-ER (PER04) 2018:148:04:00:00.000   3.0   --    --  247.0000 -45.5000   5.27 155.83 149.09   
 ----     49226       CAL-ER (CAL01) 2018:148:06:00:00.000   1.0   --    --   68.6000 -25.1000 184.89  46.66 109.41   
 ----     49225       CAL-ER (PER05) 2018:148:07:30:00.000   3.0   --    --  108.0000  57.0000 300.21  47.45 144.89   
 ----     49224       CAL-ER (CTI01) 2018:148:09:36:35.409   2.0   --    --  236.7000   1.3000 199.06 155.88 108.78   
503009    20315 1       ZTF18aaqjovh 2018:148:11:24:13.425  10.0 ACIS-S NONE 178.1832  25.6971 240.30  99.87  66.08 dss pspc rass
502980 P1 20281 0     PSR J0846-3533 2018:148:14:43:10.343   3.5 ACIS-S NONE 131.5273 -35.5394 238.89  84.77  75.52 dss pspc rass
703634    20769 0       HE 1353-1917 2018:148:16:12:52.533  40.0  HRC-I NONE 209.1457 -19.5117 260.31 146.21  71.41 dss pspc rass
601304    19347 0           NGC 4100 2018:149:03:52:38.433  10.0 ACIS-S NONE 181.5398  49.6037 236.89  89.03  79.19 dss pspc rass
201157    21041 0             RNO1BC 2018:149:07:10:18.769  25.0 ACIS-I NONE   9.2021  63.4652  69.32  56.17  69.78 dss pspc rass
801674    20980 0           NGC 6482 2018:149:14:38:59.459  77.0 ACIS-S NONE 267.9753  23.0717 152.97 130.56  74.30 dss pspc rass
 ----     49223       CAL-ER (CTI03) 2018:150:12:36:10.463   3.0   --    --   48.2000  67.2000  24.28  46.98  85.00   
 ----     49222       CAL-ER (PER06) 2018:150:17:30:00.000   3.0   --    --  250.3900  -7.8300 168.26 165.71 118.76   
 ----     49221       CAL-ER (PER07) 2018:150:20:00:00.000   3.0   --    --  248.0000 -36.0000   2.26 165.81 165.53   
 ----     49220       CAL-ER (PER03) 2018:151:00:00:00.000   2.0   --    --   68.0000 -26.0000 180.52  47.83 118.01   
 ----     49219       CAL-ER (CTI02) 2018:151:01:26:04.577   2.0   --    --   68.0000 -26.0000 180.44  47.84   0.08   
901409    20791 0         4U 1636-53 2018:151:03:04:48.577  65.0 ACIS-S HETG 250.1967 -53.7597 355.97 148.03 100.44 dss pspc rass
502992 P1 20293 0  3FGL J1008.6-5706 2018:151:21:36:52.177   6.0 ACIS-S NONE 152.1521 -57.0466 252.57 104.91  53.25 dss pspc rass
703409    21046 0           UGC 7342 2018:151:23:53:07.040  38.0 ACIS-S NONE 184.5830  29.2751 237.84  99.88  93.36 dss pspc rass
801805    21060 0 PSZ2 G217.40+10.88 2018:152:10:58:31.252  10.0 ACIS-I NONE 114.5330   1.0408 239.00  48.92  74.57 dss pspc rass
901409    21099 0         4U 1636-53 2018:152:14:26:35.634  33.0 ACIS-S HETG 250.1996 -53.7590 355.97 148.25 116.58 dss pspc rass
703543 P1 20438 0     ESO 090-IG 014 2018:153:00:06:38.234  10.0 ACIS-S NONE 135.4063 -64.2501 239.10 100.00  52.68 dss pspc rass
 ----     49218       CAL-ER (CTI04) 2018:153:03:20:40.898   3.0   --    --   93.0000 -19.0000 210.00  46.98  53.42   
 ----     49217       CAL-ER (PER08) 2018:153:07:00:00.000   3.0   --    --  237.0000 -30.3000 302.12 165.86 120.13   
 ----     49216       CAL-ER (CAL01) 2018:153:11:00:00.000   3.0   --    --   93.0000 -19.0000 209.60  46.88 120.11   
 ----     49215       CAL-ER (CAL01) 2018:153:16:39:36.095   2.0   --    --   93.0000 -19.0000 209.31  46.77   0.29   
901409    21100 0         4U 1636-53 2018:153:18:18:20.095  34.0 ACIS-S HETG 250.1964 -53.7598 355.97 148.44 104.66 dss pspc rass
201166    20144 1             RY Sct 2018:154:04:25:02.998  12.0 ACIS-I NONE 276.3974 -12.7007 114.93 153.89 110.47 dss pspc rass
801689    19752 0   ZwCl 1856.8+6616 2018:154:08:20:44.284  43.0 ACIS-I NONE 284.2718  66.3385 158.96  87.93  90.85 dss pspc rass
601298    19341 0           NGC 5308 2018:154:20:42:41.284  10.0 ACIS-S NONE 206.7682  60.9919 220.68  89.23  33.93 dss pspc rass


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   


Previous weeks' short-term schedules.

Last modified: 05/25/18



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