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.

SEP2021B


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     46062       CAL-ER (IAT01) 2021:263:23:11:56.016   0.9   --    --    5.6000 -24.7000  15.00 155.02   1.59   
704575    26144 0          ESO548-81 2021:263:23:56:47.339  10.0 ACIS-S NONE  55.5220 -21.2702  77.81 120.41  61.52 dss pspc rass
503252    23577 0        GRB 210919A 2021:264:03:08:44.339  20.0 ACIS-S NONE  80.2660   1.2883  90.93  97.89  34.16 dss pspc rass
 ----     46061       CAL-ER (IAT02) 2021:264:09:13:31.106   0.9   --    --   78.8000 -70.0000  81.18  93.88  71.76   
801907    26134 0        PKS 0023-26 2021:264:09:57:59.962  29.2 ACIS-S NONE   6.4343 -26.0526  14.99 153.43  59.84 dss pspc rass
 ----     46060       CAL-ER (CAL01) 2021:264:18:14:03.455   0.9   --    --    5.6000 -24.7000  15.00 154.90   1.59   
402218    24516 0       EXO 0748-676 2021:264:19:01:54.600  26.0 ACIS-S NONE 117.1903 -67.7668 116.77  80.08  75.01 dss pspc rass
201353    23321 0            TOI-193 2021:265:02:45:19.240  24.0 ACIS-S NONE 358.6426 -37.6378 359.29 142.71  65.60 dss pspc rass
704570 P1 26130 0   MCGp01m57m016_s2 2021:265:10:06:05.601  10.0 ACIS-S NONE 340.0238   7.9573 247.85 159.06 113.73 dss pspc rass
704176    23764 0 SDSS J145623.35+2145 2021:265:13:32:49.833  21.3 ACIS-S NONE 224.0793  21.7706 290.40  48.50 110.57 dss pspc rass
 ----     46059       CAL-ER (CTI07) 2021:265:20:11:10.248   1.0   --    --  354.1000   2.0000 249.76 173.97 125.86   
 ----     46058       CAL-ER (PER06) 2021:265:21:10:19.984   1.0   --    --    5.0000   4.0000 128.01 173.39 121.48   
 ----     46057       CAL-ER (PER07) 2021:265:22:09:06.738   3.0   --    --  138.0000  38.0000  55.54  53.99 119.76   
 ----     46056       CAL-ER (PER02) 2021:266:00:30:00.000   1.0   --    --    5.0000   4.0000 128.35 173.51 119.74   
 ----     46055       CAL-ER (PER08) 2021:266:02:00:00.000   3.0   --    --    0.0500  -5.5500   0.94 174.46 127.59   
 ----     46054       CAL-ER (PER09) 2021:266:03:45:00.000   1.0   --    --  158.0000 -44.0000 151.00  48.16 127.28   
 ----     46053       CAL-ER (CTI04) 2021:266:04:24:48.477   3.0   --    --  158.0000 -44.0000 149.75  48.15   1.25   
801907    24300 0        PKS 0023-26 2021:266:07:27:18.551  33.0 ACIS-S NONE   6.4326 -26.0539  14.99 153.17 105.27 dss pspc rass
 ----     46052       CAL-ER (CAL01) 2021:266:16:46:42.070   0.9   --    --    5.6000 -24.7000  15.00 154.56   1.59   
503251    24273 0      SNR 0519-69.0 2021:266:17:31:33.371  30.0 ACIS-S NONE  79.9160 -69.0588  80.02  93.52  61.52 dss pspc rass
801907    24303 0        PKS 0023-26 2021:267:02:20:23.497  29.3 ACIS-S NONE   6.4340 -26.0528  14.99 152.99  60.01 dss pspc rass
 ----     46051       CAL-ER (CAL01) 2021:267:10:38:06.994   0.9   --    --    5.6000 -24.7000  15.00 154.38   1.59   
503251    24272 0      SNR 0519-69.0 2021:267:11:22:58.284  37.0 ACIS-S NONE  79.9141 -69.0563  80.02  93.48  61.52 dss pspc rass
291680    25592 2              ArLac 2021:267:22:34:06.678   5.0  HRC-S NONE 332.1804  45.7604 218.63 128.09 175.38 dss pspc rass
201500 P1 26133 0 2RXS J000608.1+09425 2021:268:00:24:40.394  10.0 ACIS-S NONE   1.5543   9.7222 174.00 171.05  52.78 dss pspc rass
704282    24806 0       PKS 1150+497 2021:268:03:53:39.745  24.4 ACIS-S NONE 178.3208  49.5097 359.42  50.43 120.70 dss pspc rass
 ----     46050       CAL-ER (CTI05) 2021:268:11:23:32.445   2.0   --    --    3.0000   8.0000 172.90 172.88 122.36   
 ----     46049       CAL-ER (PER10) 2021:268:13:00:00.000   3.0   --    --  173.6000  49.1000  11.14  50.60 122.31   
 ----     46048       CAL-ER (PER11) 2021:268:17:00:00.000   3.0   --    --    0.0100   5.5700 192.60 174.89 125.51   
 ----     46047       CAL-ER (CTI06) 2021:268:19:39:56.358   3.0   --    --    0.0050   5.5500 204.00 174.91  11.40   
704282    24807 0       PKS 1150+497 2021:268:22:42:06.358  30.4 ACIS-S NONE 178.3153  49.5081 359.43  50.75 126.69 dss pspc rass
503271    24494 0     PSR J1849-0001 2021:269:07:46:52.376  30.0 ACIS-I NONE 282.2450  -0.0110 271.29  99.40 101.70 dss pspc rass


SEP2021A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
201499    26132 0 2MASS J23350028+0136 2021:262:18:54:58.264   5.0 ACIS-S NONE 353.7595   1.6292 228.27 175.66  57.21 dss pspc rass
201498    26131 0         BD+22 4409 2021:262:20:42:00.928   5.0 ACIS-S NONE 322.7606  23.3592 238.36 138.56  37.20 dss pspc rass
801907    24301 0        PKS 0023-26 2021:262:22:52:33.711  17.8 ACIS-S NONE   6.4340 -26.0528  14.99 153.59 142.71 dss pspc rass
 ----     46068       CAL-ER (CTI01) 2021:263:03:59:31.513   2.0   --    --    5.6000 -24.7000  15.00 155.12   1.59   
 ----     46067       CAL-ER (PER01) 2021:263:06:00:00.000   2.0   --    --  358.0000  15.0000 177.97 163.89 164.67   
 ----     46066       CAL-ER (PER03) 2021:263:08:00:00.000   1.0   --    --  173.6000  49.1000   5.25  48.13 115.78   
 ----     46065       CAL-ER (PER04) 2021:263:10:00:00.000   1.0   --    --  359.0000   6.0000 168.50 172.81 124.78   
 ----     46064       CAL-ER (PER05) 2021:263:11:30:00.000   1.0   --    --  173.6000  49.1000   5.39  48.20 124.78   
 ----     46063       CAL-ER (CAL01) 2021:263:13:03:21.308   3.0   --    --  160.0000 -46.0000 156.48  49.51 160.38   
801907    23839 0        PKS 0023-26 2021:263:16:10:55.497  30.0 ACIS-S NONE   6.4325 -26.0539  14.99 153.54 104.12 dss pspc rass
 ----     46062       CAL-ER (IAT01) 2021:264:00:40:19.016   0.9   --    --    5.6000 -24.7000  15.00 155.01   1.59   
402218    24516 0       EXO 0748-676 2021:264:01:28:10.680  29.1 ACIS-S NONE 117.1959 -67.7680 117.50  80.13  75.05 dss pspc rass
801907    26134 0        PKS 0023-26 2021:264:10:05:11.348  29.9 ACIS-S NONE   6.4337 -26.0530  14.99 153.43  73.55 dss pspc rass
 ----     46061       CAL-ER (CAL01) 2021:264:18:32:44.849   0.9   --    --    5.6000 -24.7000  15.00 154.90   1.59   
503251    25061 0      SNR 0519-69.0 2021:264:19:17:36.142  25.0 ACIS-S NONE  79.9146 -69.0571  80.02  93.60  61.52 dss pspc rass
201353    23321 0            TOI-193 2021:265:02:41:32.593  25.0 ACIS-S NONE 358.6423 -37.6379 359.30 142.71  52.98 dss pspc rass
704570    26130 0   MCGp01m57m016_s2 2021:265:10:18:58.789  10.0 ACIS-S NONE 340.0238   7.9575 247.87 159.05 113.71 dss pspc rass
704176    23764 0 SDSS J145623.35+2145 2021:265:13:45:43.022  20.5 ACIS-S NONE 224.0792  21.7706 290.41  48.50 110.57 dss pspc rass
 ----     46060       CAL-ER (CTI07) 2021:265:20:11:10.244   1.0   --    --  354.1000   2.0000 249.76 173.97 125.86   
 ----     46059       CAL-ER (PER06) 2021:265:21:10:19.958   1.0   --    --    5.0000   4.0000 128.01 173.39 121.48   
 ----     46058       CAL-ER (PER07) 2021:265:22:09:06.711   3.0   --    --  138.0000  38.0000  55.54  53.99 119.76   
 ----     46057       CAL-ER (PER02) 2021:266:00:30:00.000   1.0   --    --    5.0000   4.0000 128.35 173.51 119.74   
 ----     46056       CAL-ER (PER08) 2021:266:02:00:00.000   3.0   --    --    0.0500  -5.5500   0.94 174.46 127.59   
 ----     46055       CAL-ER (PER09) 2021:266:03:45:00.000   1.0   --    --  158.0000 -44.0000 151.00  48.16 127.28   
 ----     46054       CAL-ER (CTI04) 2021:266:04:24:48.477   3.0   --    --  158.0000 -44.0000 149.75  48.15   1.25   
801907    24300 0        PKS 0023-26 2021:266:07:27:18.551  33.0 ACIS-S NONE   6.4325 -26.0539  14.99 153.17 105.27 dss pspc rass
 ----     46053       CAL-ER (CAL01) 2021:266:16:46:42.070   0.9   --    --    5.6000 -24.7000  15.00 154.56   1.59   
503251    24273 0      SNR 0519-69.0 2021:266:17:31:33.371  30.0 ACIS-S NONE  79.9160 -69.0588  80.02  93.52  61.52 dss pspc rass
801907    24303 0        PKS 0023-26 2021:267:02:20:23.498  29.3 ACIS-S NONE   6.4340 -26.0528  14.99 152.99  60.01 dss pspc rass
 ----     46052       CAL-ER (CAL01) 2021:267:10:38:06.995   0.9   --    --    5.6000 -24.7000  15.00 154.38   1.59   
503251    24272 0      SNR 0519-69.0 2021:267:11:22:58.285  37.0 ACIS-S NONE  79.9141 -69.0563  80.02  93.48  61.52 dss pspc rass
291680    25592 2              ArLac 2021:267:22:34:06.680   5.0  HRC-S NONE 332.1804  45.7604 218.63 128.09 175.38 dss pspc rass
201500    26133 0 2RXS J000608.1+09425 2021:268:00:24:40.394  10.0 ACIS-S NONE   1.5543   9.7222 174.00 171.05  52.78 dss pspc rass
704282    24806 0       PKS 1150+497 2021:268:03:53:39.744  24.4 ACIS-S NONE 178.3208  49.5097 359.42  50.43 120.70 dss pspc rass
 ----     46051       CAL-ER (CTI05) 2021:268:11:23:32.445   2.0   --    --    3.0000   8.0000 172.90 172.88 122.36   
 ----     46050       CAL-ER (PER10) 2021:268:13:00:00.000   3.0   --    --  173.6000  49.1000  11.14  50.60 122.31   
 ----     46049       CAL-ER (PER11) 2021:268:17:00:00.000   3.0   --    --    0.0100   5.5700 192.60 174.89 125.51   
 ----     46048       CAL-ER (CTI06) 2021:268:19:39:56.358   3.0   --    --    0.0050   5.5500 204.00 174.91  11.40   
704282    24807 0       PKS 1150+497 2021:268:22:42:06.358  30.4 ACIS-S NONE 178.3153  49.5081 359.43  50.75 126.69 dss pspc rass
503271    24494 0     PSR J1849-0001 2021:269:07:46:52.376  30.0 ACIS-I NONE 282.2450  -0.0110 271.29  99.40 101.70 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 09/20/21



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