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.

DEC0621A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     45877       CAL-ER (PER11) 2021:340:00:12:06.076   3.0   --    --  355.4000   5.6662 291.76 104.15   3.42   
 ----     45876       CAL-ER (PER01) 2021:340:04:00:00.000   3.0   --    --  317.4945 -24.3794 282.57  59.03  47.66   
 ----     45875       CAL-ER (PER02) 2021:340:05:20:06.689   3.0   --    --   18.6358 -74.6420 305.00  76.99  65.75   
704490    25446 0           NGC 1589 2021:340:07:14:36.936  25.0 ACIS-S NONE  67.6679   0.8616 340.00 157.81  80.90 dss pspc rass
704297 P1 25251 0          FRB190608 2021:340:14:49:58.579  20.0 ACIS-S NONE 334.0068  -7.8802 280.00  78.67 104.37 dss pspc rass
402278    23500 1            NGC 253 2021:340:20:51:18.579  10.0 ACIS-I NONE  11.9067 -25.2954 303.47 103.60  41.80 dss pspc rass
201469    25124 0             TAP 26 2021:341:00:08:20.579  30.0 ACIS-S NONE  64.6959  17.3991 303.74 170.25  66.90 dss pspc rass
 ----     45874       CAL-ER (IAT01) 2021:341:09:11:39.191   0.9   --    --   88.1143  15.8620  60.93 164.96 125.15   
503276    23869 2           GW170817 2021:341:10:08:05.348  29.0 ACIS-S NONE 197.4542 -23.4057  72.80  51.62 113.64 dss pspc rass
201470    25849 0            Sh2-284 2021:341:18:48:08.841  28.0 ACIS-I NONE 101.5792   0.0575  52.00 145.13  95.51 dss pspc rass
291644    24572 2               HZ43 2021:342:03:12:41.760   2.0  HRC-I LETG 199.0866  29.0765  52.18  74.49 100.72 dss pspc rass
704557    26032 0 [RCD2020] J142.91008 2021:342:04:13:09.360  21.0 ACIS-S NONE 142.9326  56.5342  94.86 120.76  47.67 dss pspc rass
 ----     45873       CAL-ER (PER03) 2021:342:10:28:24.734   3.0   --    --   88.0000  32.0000 125.66 165.26  45.74   
 ----     45872       CAL-ER (PER04) 2021:342:13:00:00.000   3.0   --    --  163.7245  30.2622  70.73 102.41  64.27   
 ----     45871       CAL-ER (PER05) 2021:342:17:00:00.000   3.0   --    --   86.5816  27.0000 110.21 168.98  66.46   
 ----     45870       CAL-ER (PER06) 2021:342:18:17:01.520   3.0   --    --   87.8945  15.8773  59.00 166.37  51.86   
503276    26223 2           GW170817 2021:342:22:33:34.802  24.0 ACIS-S NONE 197.4536 -23.4052  71.60  53.11 113.85 dss pspc rass
201457    25112 1             FY CMa 2021:343:05:46:21.174   6.0 ACIS-S NONE 111.7368 -23.1079  39.66 122.35  77.73 dss pspc rass
704427    25834 0 WISE J041010.60-0913 2021:343:07:56:25.792  15.0 ACIS-S NONE  62.5202  -9.2204 340.00 145.31  65.60 dss pspc rass
801924    26190 0   SPT-CLJ2355-6002 2021:343:12:37:27.942  18.3 ACIS-I NONE 358.7421 -60.0495 285.95  76.28  69.91 dss pspc rass
704427    26224 0 WISE J041010.60-0913 2021:343:18:14:00.100  15.0 ACIS-S NONE  62.5215  -9.2203 340.00 145.09  69.91 dss pspc rass
704208    26160 0  Antlia Cluster SE 2021:343:23:00:58.761   8.0 ACIS-I NONE 157.5683 -35.6115  69.50  83.81  96.65 dss pspc rass
503304    25181 0           SN2012ap 2021:344:01:49:23.537  19.0 ACIS-S NONE  75.0374  -3.3569 360.00 153.65  88.11 dss pspc rass
201515    26222 0 2RXS J055423.4+20163 2021:344:07:39:17.736  15.0  HRC-S LETG  88.6006  20.2571  73.76 168.98  79.81 dss pspc rass
503276    24336 2           GW170817 2021:344:12:30:17.377  26.0 ACIS-S NONE 197.4532 -23.4049  71.00  54.61 114.72 dss pspc rass
801923    23855 0     MOO J1059+5454 2021:344:20:17:36.492  23.3 ACIS-I NONE 165.0015  54.9040  78.37 110.14  83.18 dss pspc rass
 ----     45869       CAL-ER (PER07) 2021:345:03:14:53.070   3.0   --    --   83.3956  27.5851 132.12 173.31  63.39   
 ----     45868       CAL-ER (PER08) 2021:345:05:00:00.000   3.0   --    --  166.0114  31.3848  71.04 103.41  71.47   
 ----     45867       CAL-ER (CAL01) 2021:345:08:00:00.000   3.0   --    --   83.3956  27.5851 133.47 173.46  71.72   
 ----     45866       CAL-ER (PER09) 2021:345:11:20:00.000   3.0   --    --  216.4540  37.1212  40.32  71.95 102.00   
 ----     45865       CAL-ER (PER10) 2021:345:12:58:02.663   1.0   --    --  327.6527 -29.4785 281.79  61.50 146.45   
201469    26225 0             TAP 26 2021:345:14:00:32.943  10.0 ACIS-S NONE  64.6965  17.4025 295.77 165.87 104.42 dss pspc rass
 ----     45864       CAL-ER (IAT02) 2021:345:17:17:46.397   0.9   --    --    4.1395 -14.5866 296.43  97.99  67.76   
801923    26226 0     MOO J1059+5454 2021:345:18:21:18.507  28.0 ACIS-I NONE 165.0024  54.9087  87.96 110.78 145.58 dss pspc rass
201515    26227 0 2RXS J055423.4+20163 2021:346:02:43:03.837  15.0  HRC-S LETG  88.6025  20.2573  79.00 170.72  88.15 dss pspc rass
503276    24337 2           GW170817 2021:346:07:34:08.381  20.0 ACIS-S NONE 197.4527 -23.4045  70.00  56.35 115.09 dss pspc rass
704169    23757 0 SDSS J104754.58+6213 2021:346:13:43:00.507  24.4 ACIS-S NONE 161.9945  62.1952  85.24 113.85  90.16 dss pspc rass
801923    24485 0     MOO J1059+5454 2021:346:20:56:57.507  26.0 ACIS-I NONE 165.0008  54.9069  79.98 111.54   7.92 dss pspc rass


NOV2921A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     45892       CAL-ER (IAT02) 2021:333:02:06:12.723   0.9   --    --  296.7003  39.7118 311.60  77.96  92.29   
704250    26220 0       ZTF21aanxhjv 2021:333:02:54:49.217  21.0  HRC-S LETG  46.9601  40.3295 215.99 155.76  78.41 dss pspc rass
503255    23580 0         GRB211023B 2021:333:09:22:45.231  30.0 ACIS-S NONE 170.3052  39.1133  56.00  92.50 100.95 dss pspc rass
704250    23838 0       ZTF21aanxhjv 2021:333:18:20:41.257  30.0  HRC-S LETG  46.9594  40.3286 215.99 155.48 100.95 dss pspc rass
503255    26218 0         GRB211023B 2021:334:03:18:37.271  30.3 ACIS-S NONE 170.3055  39.1144  56.00  93.14 100.95 dss pspc rass
 ----     45891       CAL-ER (PER20) 2021:334:12:15:49.388   3.0   --    --   74.7662  26.8130 122.21 170.84  77.51   
 ----     45890       CAL-ER (PER01) 2021:334:13:46:59.266   3.0   --    --  206.9946  18.1844  45.80  55.55 115.49   
 ----     45889       CAL-ER (PER02) 2021:334:15:03:17.133   3.0   --    --  156.6599  41.1264  73.26 104.00  48.55   
 ----     45888       CAL-ER (PER07) 2021:334:18:30:00.000   4.0   --    --   78.0000  24.8000 104.32 169.20  67.79   
 ----     45887       CAL-ER (PER05) 2021:334:20:30:20.452   3.0   --    --   61.5130  20.4648 299.00 174.89 171.78   
801911    24506 0   SPT-CLJ2031-4037 2021:335:00:20:40.283  25.0 ACIS-S NONE 307.9531 -40.6171 262.49  54.30 120.80 dss pspc rass
201469    25693 0             TAP 26 2021:335:08:00:13.575  19.2 ACIS-S NONE  64.6905  17.3893 331.33 174.91 123.25 dss pspc rass
 ----     45886       CAL-ER (IAT01) 2021:335:13:59:30.544   0.9   --    --  331.0000 -62.0000 275.03  67.73 107.02   
704195    23783 3      QSOJ1131-1231 2021:335:14:56:34.074  31.0 ACIS-S NONE 172.9647 -12.5579  64.00  71.29 116.44 dss pspc rass
201514    26217 0    UCAC3 230-34230 2021:336:00:11:11.381  26.0 ACIS-S NONE  79.1119  24.7364 103.07 169.46 101.05 dss pspc rass
503257    23582 0         SN 2020ywx 2021:336:08:00:50.755  37.5 ACIS-S NONE 178.3579  10.8708  61.60  76.09  93.70 dss pspc rass
802007    26102 0 PSZ2 G225.93-19.99 2021:336:19:02:23.984  30.9 ACIS-I NONE  90.0662 -20.1276  27.26 133.01  94.74 dss pspc rass
 ----     45885       CAL-ER (PER15) 2021:337:04:09:03.487   1.2   --    --  186.4000 -68.0000 106.88  59.55  73.73   
 ----     45884       CAL-ER (CAL01) 2021:337:05:08:24.248   3.0   --    --  206.4616  17.7349  48.14  57.86 107.31   
 ----     45883       CAL-ER (PER09) 2021:337:06:24:46.947   3.0   --    --  156.1021  41.4714  75.08 106.81  48.93   
 ----     45882       CAL-ER (CAL01) 2021:337:09:30:00.000   3.0   --    --   75.0000  33.0000 154.84 168.09  67.03   
 ----     45881       CAL-ER (CAL01) 2021:337:11:50:00.000   3.0   --    --   61.5130  20.4648 283.80 172.22 123.55   
801942    25840 0   RXC J2014.8-2430 2021:337:15:45:39.796  16.2 ACIS-S NONE 303.7070 -24.5455 275.00  49.20 122.88 dss pspc rass
704096    23684 1       MGJ0414+0534 2021:337:20:58:05.917  27.3 ACIS-S NONE  63.6329   5.5826 326.00 162.25 120.31 dss pspc rass
801942    26221 0   RXC J2014.8-2430 2021:338:05:15:18.873  16.0 ACIS-S NONE 303.7057 -24.5434 276.00  48.64 120.22 dss pspc rass
704227    23815 0       LEDA 3096766 2021:338:10:23:24.903  12.0 ACIS-I NONE  48.2573  41.3565 241.70 153.22 116.70 dss pspc rass
201452 P1 25107 0              HD108 2021:338:14:08:27.242  15.0 ACIS-S NONE   1.5035  63.7054 255.01 119.02  42.84 dss pspc rass
601553    25737 0           NGC 2366 2021:338:18:43:27.334  30.0 ACIS-S NONE 112.2798  69.1984 130.20 127.04  42.67 dss pspc rass
704551 P1 26026 0 SDSS J153830.71+4244 2021:339:03:32:22.890   6.8 ACIS-S NONE 234.6030  42.7204  13.02  66.93  60.42 dss pspc rass
601553    25738 0           NGC 2366 2021:339:05:54:38.808  27.0 ACIS-S NONE 112.2731  69.1997 130.74 127.23  60.44 dss pspc rass
704549 P1 26024 0 SDSS J165539.74+2834 2021:339:13:57:35.704   5.2 ACIS-S NONE 253.8926  28.5624 351.51  51.03  78.52 dss pspc rass
704227    26219 0       LEDA 3096766 2021:339:16:03:40.414  11.3 ACIS-I NONE  48.2601  41.3510 233.81 152.53 107.38 dss pspc rass
 ----     45880       CAL-ER (PER16) 2021:339:19:43:36.029   3.0   --    --   76.7351  30.3072 151.56 171.15  69.54   
 ----     45879       CAL-ER (PER17) 2021:339:21:20:31.470   3.0   --    --   62.3520  17.7591 298.38 169.58 141.41   
 ----     45878       CAL-ER (PER19) 2021:339:22:42:13.000   4.7   --    --  352.0000   6.0000 291.75 101.20  72.80   


Previous weeks' short-term schedules.

Last modified: 12/03/21



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