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.

JUL2621A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
703989    22603 0             IC 750 2021:206:23:57:25.584  25.0 ACIS-S NONE 179.7014  42.7414 276.51  51.06 108.30 dss pspc rass
402202    24289 0  hete j1900.1-2455 2021:207:07:35:57.010  28.9 ACIS-S NONE 285.0249 -24.8987 269.50 160.23 118.61 dss pspc rass
 ----     46189       CAL-ER (CTI01) 2021:207:15:57:58.130   1.0   --    --  302.0000 -21.0000 293.74 175.98  23.80   
 ----     46188       CAL-ER (PER02) 2021:207:17:00:00.000   1.0   --    --  303.0000 -15.0000 212.56 174.84  81.68   
 ----     46187       CAL-ER (PER01) 2021:207:18:15:00.000   4.0   --    --  178.7000  48.2600 285.36  51.13 123.89   
 ----     46186       CAL-ER (CAL01) 2021:207:19:30:10.000   4.0   --    --  178.7000  48.2600 285.36  51.11   0.00   
 ----     46185       CAL-ER (CAL01) 2021:207:20:45:20.000   4.0   --    --  178.7000  48.2600 285.36  51.09   0.00   
 ----     46184       CAL-ER (CAL01) 2021:207:22:45:00.000   1.0   --    --  303.0000 -15.0000 214.66 174.76 123.82   
 ----     46183       CAL-ER (PER03) 2021:207:23:58:48.219   1.0   --    --  314.9500 -21.9900  73.20 171.37 145.52   
402273    23495 1            NGC 253 2021:208:00:58:31.901  10.0 ACIS-I NONE  11.9415 -25.3221  98.72 119.49  51.93 dss pspc rass
503168    22445 0        ASASSN-18tb 2021:208:04:12:33.743  50.0 ACIS-S NONE  64.5759 -63.6285 123.27  95.55  53.39 dss pspc rass
201285    22988 0       Westerlund 1 2021:208:18:38:22.849  18.0 ACIS-I NONE 251.7407 -45.8439 279.99 127.58  76.43 dss pspc rass
704150    23738 2             Sgr A* 2021:208:23:58:36.965  21.6 ACIS-S NONE 266.4038 -28.9891 275.75 141.64  24.31 dss pspc rass
201398    23411 1              WR 97 2021:209:06:13:27.965  10.0 ACIS-S NONE 264.2082 -34.0260 280.20 138.83   7.76 dss pspc rass
703989    25095 0             IC 750 2021:209:09:39:55.311  25.0 ACIS-S NONE 179.7016  42.7408 277.01  49.71 109.30 dss pspc rass
601449    22940 0          H1821+643 2021:209:17:04:48.129  30.0  HRC-S LETG 275.5107  64.3603 210.51  93.13  57.21 dss pspc rass
201285    25096 0       Westerlund 1 2021:210:02:07:35.046  18.3 ACIS-I NONE 251.7423 -45.8454 279.99 126.48 122.77 dss pspc rass
 ----     46182       CAL-ER (CTI02) 2021:210:07:39:40.196   4.0   --    --  303.2000 -20.8000 291.62 174.60  51.93   
 ----     46181       CAL-ER (PER07) 2021:210:08:54:50.196   4.0   --    --  303.2000 -20.8000 291.62 174.55   0.00   
 ----     46180       CAL-ER (CAL01) 2021:210:10:10:00.196   4.0   --    --  303.2000 -20.8000 291.62 174.51   0.00   
 ----     46179       CAL-ER (PER05) 2021:210:12:01:00.000   1.0   --    --  167.0000 -10.8000 232.30  47.95 126.78   
 ----     46178       CAL-ER (PER06) 2021:210:13:00:00.000   1.0   --    --  130.0000 -30.0000 181.64  48.70  53.63   
 ----     46177       CAL-ER (PER04) 2021:210:14:45:00.000   1.0   --    --  309.0000 -25.0000   2.02 173.66 125.01   
201327    24757 0      Collinder 197 2021:210:16:22:56.289  24.0 ACIS-I NONE 131.2074 -41.2516 179.02  59.94 113.86 dss pspc rass
704151    23739 2             Sgr A* 2021:210:23:40:27.268  21.6 ACIS-S NONE 266.4030 -28.9875 275.26 139.77  99.07 dss pspc rass
201327    25099 0      Collinder 197 2021:211:06:17:58.245  11.0 ACIS-I NONE 131.2079 -41.2515 179.02  59.76  99.07 dss pspc rass
201285    25097 0       Westerlund 1 2021:211:09:54:08.974  24.0 ACIS-I NONE 251.7406 -45.8437 279.99 125.39  78.05 dss pspc rass
601514    24456 0 [DAG2016] PSZ1-ARC G 2021:211:17:02:08.974  25.0 ACIS-S NONE 237.4470 -78.1668 283.46 111.55  36.66 dss pspc rass
402202    24290 0  hete j1900.1-2455 2021:212:00:29:23.490  20.0 ACIS-S NONE 285.0199 -24.9050 287.99 155.77  67.84 dss pspc rass
704272 P1 24731 0           NGC 3268 2021:212:06:40:57.013  20.0 ACIS-I NONE 157.5413 -35.2746 206.01  59.37 102.26 dss pspc rass
402202    24288 0  hete j1900.1-2455 2021:212:12:52:30.537  32.5 ACIS-S NONE 285.0189 -24.9041 287.99 155.26 102.26 dss pspc rass
 ----     46176       CAL-ER (CTI03) 2021:212:22:16:50.729   3.0   --    --  306.0000 -25.0000 324.85 171.65  33.67   
 ----     46175       CAL-ER (CAL01) 2021:213:00:30:00.000   3.0   --    --  339.0000 -53.0000  42.53 138.90  66.41   
 ----     46174       CAL-ER (CAL01) 2021:213:04:00:00.000   3.0   --    --  130.0000 -30.0000 178.39  48.06  93.26   
 ----     46173       CAL-ER (CTI04) 2021:213:07:02:55.495   3.0   --    --  130.0000 -30.0000 178.24  48.03   0.15   
201285    25098 0       Westerlund 1 2021:213:08:51:56.495  25.7 ACIS-I NONE 251.7389 -45.8421 279.99 123.76  87.77 dss pspc rass


JUL1921B


Seq #     ObsID Constr.    Target                Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
-----------------------------------------------------------------------------------------------------------------------------------
 ----     46205         CAL-ER (PER01) 2021:199:18:43:40.688   1.0   --    --  178.0000   5.0000 248.71  60.18  99.80   
 ----     46204         CAL-ER (PER02) 2021:199:19:51:45.073   3.0   --    --   68.0000   4.0000 113.70  51.50 161.58   
 ----     46203         CAL-ER (PER03) 2021:199:21:21:23.171   3.0   --    --  319.4151 -23.7683  85.93 160.15 108.61   
 ----     46202         CAL-ER (PER14) 2021:199:23:00:15.336   1.0   --    --  279.6323 -25.1957 280.30 162.38 150.16   
 ----     46201         CAL-ER (CAL01) 2021:199:23:55:15.832   1.0   --    --  178.0000   5.0000 248.72  60.00 102.79   
503296    25093 0           GRB210704A 2021:200:01:50:06.615  20.0 ACIS-S NONE 158.9790  57.2303 303.53  46.90  68.72 dss pspc rass
300502    25092 0            V1674 Her 2021:200:07:59:39.028  30.0  HRC-S LETG 284.3955  16.9129 200.79 139.79  93.18 dss pspc rass
100200    23372 2              Jupiter 2021:200:16:57:57.250  36.0  HRC-I NONE 333.0417 -12.3562 108.96 146.35 102.62 dss pspc rass
704095    23683 1         MGJ0414+0534 2021:201:03:33:57.969  30.0 ACIS-S NONE  63.6742   5.5592 105.00  56.05  92.30 dss pspc rass
704296    25094 0   SWIFT J2150.2-1889 2021:201:12:31:09.037  10.0 ACIS-I NONE 327.5640 -18.9169  92.00 153.84  97.58 dss pspc rass
601450    22473 0                  N79 2021:201:15:53:37.467  29.0 ACIS-I NONE  73.0294 -69.3985 130.05  95.93  91.38 dss pspc rass
 ----     46200         CAL-ER (IAT01) 2021:202:00:48:57.613   0.9   --    --  243.0000  53.0000 232.06  91.43 164.26   
402217    24522 0          4U 1916-053 2021:202:01:35:49.683  26.0 ACIS-S HETG 289.7105  -5.2171 217.00 161.57  70.58 dss pspc rass
 ----     46199         CAL-ER (PER13) 2021:202:09:17:38.391   1.0   --    --  286.1337 -22.1131 274.36 166.36  60.50   
 ----     46198         CAL-ER (PER15) 2021:202:10:12:15.956   3.0   --    --  184.0000  -0.4226 247.18  65.26 101.07   
 ----     46197         CAL-ER (PER16) 2021:202:11:42:03.413   7.0   --    --   57.0000 -60.0000 122.39  95.46 109.31   
 ----     46196         CAL-ER (PER17) 2021:202:14:09:58.170   3.0   --    --  310.0000 -31.7375  38.09 166.02  70.86   
 ----     46195         CAL-ER (PER11) 2021:202:17:00:00.000   1.0   --    --  106.9222 -27.5718 162.69  49.84 117.05   
601450    25091 0                  N79 2021:202:17:51:16.710  30.6 ACIS-I NONE  73.0240 -69.4013 121.05  96.03  48.21 dss pspc rass
100196    23368 1              Jupiter 2021:203:02:59:46.881 144.0  HRC-I NONE 332.7750 -12.4665 108.71 148.94 104.19 dss pspc rass
 ----     46194         CAL-ER (CAL01) 2021:204:19:36:38.673   0.9   --    --   66.5085  11.7277 106.24  54.81  96.13   
402246    23468 1              M82 X-2 2021:204:20:30:10.103   5.0  HRC-I NONE 148.8961  69.6802 328.82  52.15 100.53 dss pspc rass
704110 P1 23698 0          MCG2-30-017 2021:204:22:26:06.007   4.3 ACIS-S NONE 175.5651  14.0922 255.64  50.22  76.94 dss pspc rass
 ----     46193         CAL-ER (PER08) 2021:204:23:57:52.705   3.0   --    --  198.7676   4.5707 250.59  74.82  24.80   
 ----     46192         CAL-ER (PER05) 2021:205:01:43:19.801   3.0   --    --   42.0000   4.0000 109.53  80.50 179.78   
 ----     46191         CAL-ER (PER06) 2021:205:03:07:57.570   3.0   --    --  115.2199 -30.3583 170.08  50.87  86.08   
 ----     46190         CAL-ER (PER07) 2021:205:06:00:00.000   3.0   --    --  305.6673 -29.8127  11.70 169.87 119.01   
901437    23647 0 NuSTAR J083846-3602. 2021:205:10:00:08.910  21.0 ACIS-S NONE 129.7194 -36.0269 189.02  56.15 114.34 dss pspc rass
503262 P1 23587 0    4FGL J1639.3-5146 2021:205:16:22:57.619  10.0 ACIS-I NONE 249.8210 -51.7532 286.39 127.39  77.90 dss pspc rass
601450    23062 0                  N79 2021:205:19:39:00.501  40.0 ACIS-I NONE  73.0296 -69.3977 132.05  96.17  62.47 dss pspc rass
503212    24427 0         PSR B2224+65 2021:206:07:34:45.809  25.0 ACIS-I NONE 336.4233  65.6135 147.00  91.42 151.15 dss pspc rass
402217    24524 0          4U 1916-053 2021:206:15:06:11.625  29.5 ACIS-S HETG 289.7092  -5.2194 217.00 159.45  86.69 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 07/23/21



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