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.

There is a link to previous weeks' short-term schedules at the bottom of this page.

OCT1325A


Seq #  NB  ObsID Constr.          Target                Start        Time   SI   Grat    Active Chips      RA       Dec    Roll   Pitch   Slew   Overlays
------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ -------------
 ----      42043               CAL-ER (PER02) 2025:285:14:05:44.823   3.0   --    --                    230.7000  31.2000 315.06  49.97 122.61   
 ----      42042               CAL-ER (PER08) 2025:285:16:00:00.000   3.0   --    --                     17.3000  10.4200 188.24 177.07 128.96   
 ----      42041               CAL-ER (PER01) 2025:285:18:00:00.000   3.0   --    --                     46.0000  46.0000 138.93 134.54  54.94   
 ----      42040               CAL-ER (PER05) 2025:285:20:30:00.000   1.0   --    --                    171.0000  33.0000  37.15  47.99  86.70   
 ----      42039               CAL-ER (PER06) 2025:285:22:00:00.000   1.0   --    --                     21.0000  10.0000 128.15 176.18 129.03   
 ----      42038               CAL-ER (PER07) 2025:285:23:30:00.000   1.0   --    --                     19.7000   4.3000  26.26 176.25 102.17   
201814     30515    4                   WR 11 2025:286:00:39:59.855  20.0 ACIS-S HETG S0,S1,S2,S3,S4,S5 122.3831 -47.3366  95.35  74.66 102.55 dss pspc rass
705254     29966    0    SDSS J014137.22-0914 2025:286:06:48:32.702  23.8 ACIS-S NONE             S2,S3  25.4043  -9.2437  22.73 161.54  88.71 dss pspc rass
503551     30729    0          PSR J1418-6058 2025:286:14:04:50.610  16.0 ACIS-I NONE       I0,I1,I2,I3 214.6780 -60.9675 199.79  54.39 110.34 dss pspc rass
705306     30018    1                 PS16dtm 2025:286:19:13:34.127  20.0 ACIS-S NONE             S2,S3  29.5198  -0.8727  35.00 166.08 119.51 dss pspc rass
802210     30028    0        SPT-CLJ0421-4845 2025:287:01:15:03.563  20.0 ACIS-I NONE       I0,I1,I2,I3  65.3206 -48.7612  49.76 110.15  56.96 dss pspc rass
291766     29534    2                    Vega 2025:287:07:39:30.059   1.0  HRC-S NONE                   279.2366  38.7857 282.55  87.42 160.24 dss pspc rass
291767     29535    2                    Vega 2025:287:08:04:40.059   1.0  HRC-S NONE                   279.2366  38.7857 282.75  87.42   0.83 dss pspc rass
503559     29844    0          PSR J1957+5033 2025:287:08:43:52.059  29.0 ACIS-I NONE       I0,I1,I2,I3 299.4100  50.5559 267.41 102.74  18.24 dss pspc rass
802205     30410    0       MACS J0018.5+1626 2025:287:17:16:27.472  12.3 ACIS-I NONE       I0,I1,I2,I3   4.6388  16.4433 232.00 163.28  61.91 dss pspc rass
601686     29876    0                 Mrk 247 2025:287:21:21:35.576  16.8 ACIS-S NONE       I2,S1,S2,S3 198.6525  54.7982 358.00  63.16 110.86 dss pspc rass
 ----      42037               CAL-ER (PER09) 2025:288:02:42:13.694   3.0   --    --                     21.0000  11.0000 158.34 177.25 114.87   
 ----      42036               CAL-ER (PER10) 2025:288:05:00:00.000   3.0   --    --                    196.8000  39.0000   4.38  47.57 130.40   
 ----      42035               CAL-ER (PER11) 2025:288:07:30:00.000   3.0   --    --                     20.6000  11.5000 172.00 176.98 129.40   
 ----      42034               CAL-ER (CAL01) 2025:288:10:00:00.000   3.0   --    --                     46.0000  46.0000 141.42 136.53  44.19   
 ----      42033               CAL-ER (CAL01) 2025:288:12:00:00.000   1.0   --    --                    171.0000  33.0000  39.21  50.11  86.70   
 ----      42032               CAL-ER (PER13) 2025:288:13:15:00.000   1.0   --    --                     22.1000  10.7500 142.09 177.29 127.20   
 ----      42031               CAL-ER (PER14) 2025:288:14:30:00.000   1.0   --    --                     23.0000   6.0000  43.53 176.36  98.51   
201815     30516    4                   WR 11 2025:288:15:53:09.492  22.0 ACIS-S HETG S0,S1,S2,S3,S4,S5 122.3831 -47.3366  92.83  75.60 100.78 dss pspc rass
705305     30235    0               [vD2023]1 2025:288:22:32:45.746  28.0 ACIS-I NONE       I0,I1,I2,I3  40.4405  -8.3506  43.10 153.96  78.47 dss pspc rass
402604 P1  31503    0              4U 1626-67 2025:289:07:01:50.746  14.4  HRC-S LETG                   248.0700 -67.4609 232.71  66.33 104.55 dss pspc rass
705257     29969    0    SDSS J005855.46+0100 2025:289:11:40:34.752  21.5 ACIS-S NONE             S2,S3  14.7311   1.0048 328.00 169.71 104.55 dss pspc rass
705500 CCT 31919    0            MRCB1737-609 2025:289:18:16:39.575  20.0 ACIS-S NONE             S2,S3 265.5067 -60.9225 251.24  69.61 100.11 dss pspc rass
601666     30184    0                  IC5273 2025:290:00:17:12.746  30.0 ACIS-S NONE       I3,S2,S3,S4 344.8613 -37.7029 315.79 121.82  52.74 dss pspc rass
705482 P1  31447    0              PGC3320749 2025:290:08:58:03.746   6.0 ACIS-S NONE             S2,S3 330.1860 -56.6874 307.55 101.51  21.50 dss pspc rass
601667     29672    0                 NGC7456 2025:290:11:03:20.746  23.4 ACIS-S NONE       I3,S2,S3,S4 345.5432 -39.5694 316.93 120.49  19.97 dss pspc rass
 ----      42030               CAL-ER (PER15) 2025:290:18:02:04.055   3.0   --    --                     20.0000   8.0000 300.59 177.21  62.78   
 ----      42029               CAL-ER (PER17) 2025:290:20:00:00.000   3.0   --    --                     20.5000  11.9000 219.01 176.84  81.57   
 ----      42028               CAL-ER (PER18) 2025:290:23:30:00.000   2.0   --    --                    226.8000  34.5500 328.03  49.62 127.52   
 ----      42027               CAL-ER (CAL01) 2025:291:01:00:00.000   3.0   --    --                     24.0000  30.0000 176.43 159.47 112.45   
 ----      42026               CAL-ER (CAL01) 2025:291:03:30:00.000   2.0   --    --                    226.8000  34.5500 328.28  49.60 112.47   
 ----      42025               CAL-ER (PER19) 2025:291:05:00:00.000   1.0   --    --                     20.5000  12.0000 224.52 176.63 127.74   
 ----      42024               CAL-ER (PER16) 2025:291:06:45:00.000   1.0   --    --                     23.2000   6.0000   3.71 176.37 139.69   
201816     30517    4                   WR 11 2025:291:08:02:34.423  20.0 ACIS-S HETG S0,S1,S2,S3,S4,S5 122.3831 -47.3366  90.29  76.58 105.40 dss pspc rass
201895 CCT 31920    0     HEP G045.030+01.438 2025:291:14:23:48.742  10.0 ACIS-I NONE       I0,I1,I2,I3 287.1418  11.4158 280.79  86.02 145.82 dss pspc rass
802205     31921    0       MACS J0018.5+1626 2025:291:17:42:41.480  15.5 ACIS-I NONE       I0,I1,I2,I3   4.6388  16.4433 252.28 160.59  75.21 dss pspc rass
402634 P1  31104    0          MAXI J1820+070 2025:291:22:35:59.448  20.0 ACIS-S NONE    I2,I3,S2,S3,S4 275.0914   7.1854 279.00  73.25  87.60 dss pspc rass
201810     30088    0           TV Cassiopeia 2025:292:04:43:35.367  30.0 ACIS-S HETG    S1,S2,S3,S4,S5   4.8281  59.1390 204.18 128.78  84.44 dss pspc rass
402588     30533    0              Cygnus X-2 2025:292:13:27:50.679  30.0 ACIS-S HETG             S2,S3 326.1715  38.3214 257.40 121.23  39.46 dss pspc rass


OCT0625A


Seq #  NB  ObsID Constr.          Target                Start        Time   SI   Grat    Active Chips      RA       Dec    Roll   Pitch   Slew   Overlays
------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ -------------
 ----      42063               CAL-ER (IAT01) 2025:278:23:34:42.025   0.0   --    --                    325.0280  14.6593 263.01 133.24  47.76   
802153     28723    0     ACT-CL_J0034.4+0225 2025:279:00:04:07.918  15.3 ACIS-S NONE       I2,I3,S2,S3   8.6075   2.4256 299.00 176.04  61.12 dss pspc rass
503557     29842    0          PSR J2017+3625 2025:279:04:55:24.266  30.0 ACIS-I NONE       I0,I1,I2,I3 304.4827  36.4189 255.01 111.23  93.48 dss pspc rass
802153     31915    0     ACT-CL_J0034.4+0225 2025:279:13:52:24.152  15.5 ACIS-S NONE       I2,I3,S2,S3   8.6075   2.4256 304.00 175.51  96.74 dss pspc rass
402604     31504    0              4U 1626-67 2025:279:18:54:45.152  14.5  HRC-S LETG                   248.0700 -67.4609 238.00  72.52 106.95 dss pspc rass
704981     28605    0               Abell 370 2025:279:23:37:19.369  14.1 ACIS-I NONE       I0,I1,I2,I3  39.9604  -1.5856  62.00 151.68 114.32 dss pspc rass
 ----      42062               CAL-ER (PER01) 2025:280:04:10:08.712   3.0   --    --                    137.3400 -15.1000  93.90  55.14  97.35   
 ----      42061               CAL-ER (PER04) 2025:280:05:41:56.685   3.0   --    --                     18.8400   2.3800  62.94 173.16 118.35   
 ----      42060               CAL-ER (PER05) 2025:280:07:14:28.590   3.0   --    --                    155.2494 -50.2082 131.95  54.64 121.64   
 ----      42059               CAL-ER (PER07) 2025:280:08:46:10.691   0.9   --    --                     14.8807  -2.1713  14.74 172.05 117.91   
 ----      42058               CAL-ER (PER06) 2025:280:09:21:51.118   0.9   --    --                     12.0700   0.1380 351.46 174.56  23.51   
 ----      42057               CAL-ER (PER02) 2025:280:10:20:41.826   3.0   --    --                    237.0000 -40.5000 240.54  52.67 124.48   
 ----      42056               CAL-ER (PER09) 2025:280:13:30:00.000   3.0   --    --                     10.1900   1.2400 326.77 174.79 122.41   
 ----      42055               CAL-ER (CAL01) 2025:280:15:44:00.000   1.0   --    --                    304.0000 -46.0000 289.17 100.11  74.95   
503584     30493    3        1E 161348-5055.1 2025:280:17:09:05.304  15.0 ACIS-S NONE             S2,S3 244.4012 -51.0403 232.01  62.04  40.10 dss pspc rass
705498 CCT 31911    0    SDSSJ003723.49+00081 2025:280:21:59:20.535  15.4 ACIS-S NONE             S2,S3   9.3479   0.1368 324.37 173.09 111.39 dss pspc rass
503584     31917    3        1E 161348-5055.1 2025:281:02:56:15.773  17.0 ACIS-S NONE             S2,S3 244.4012 -51.0403 232.01  61.70 111.39 dss pspc rass
802135     28320    0       PSZ2G302.85-88.63 2025:281:08:15:07.310   6.0 ACIS-I NONE       I0,I1,I2,I3  12.8615 -28.4978 358.43 145.55  90.12 dss pspc rass
705499 CCT 31912    0        MCG_01_05_047_s2 2025:281:10:23:48.004   9.7 ACIS-S NONE             S2,S3  28.2558  -3.5414  56.58 162.72  60.54 dss pspc rass
 ----      42054               CAL-ER (IAT04) 2025:281:13:35:31.575   0.0   --    --                     72.0067  39.5689 106.76 118.17  85.77   
705276     29988    0                NGC 3516 2025:281:14:03:22.638  35.0 ACIS-S HETG             S2,S3 166.6977  72.5687  17.07  80.51  54.00 dss pspc rass
 ----      42053               CAL-ER (CAL01) 2025:282:00:09:42.830   0.0   --    --                     72.0067  39.5689 106.93 118.57  54.01   
704981     28617    0               Abell 370 2025:282:00:40:26.952  12.8 ACIS-I NONE       I0,I1,I2,I3  39.9604  -1.5856  72.84 153.26  66.98 dss pspc rass
601635     29640    0                 NGC1546 2025:282:04:44:02.578  52.2 ACIS-S NONE       I3,S2,S3,S4  63.6518 -56.0609  51.42 105.82  66.42 dss pspc rass
 ----      42052               CAL-ER (PER10) 2025:282:19:45:32.871   3.0   --    --                     18.8400   2.3800  42.39 174.47  70.26   
 ----      42051               CAL-ER (CAL01) 2025:282:21:10:12.790   0.9   --    --                     10.1900   1.2400 316.77 172.80  86.24   
 ----      42050               CAL-ER (CAL01) 2025:282:22:08:34.580   3.0   --    --                    237.0000 -40.5000 239.19  50.47 122.31   
 ----      42049               CAL-ER (CAL01) 2025:282:23:41:15.423   3.0   --    --                     10.1900   1.2400 316.37 172.70 122.31   
 ----      42048               CAL-ER (CAL01) 2025:283:01:13:56.252   3.0   --    --                    237.0000 -40.5000 239.10  50.35 122.31   
 ----      42047               CAL-ER (PER03) 2025:283:02:39:30.769   5.0   --    --                      8.5700 -37.4600 350.32 135.53  90.34   
 ----      42046               CAL-ER (PER11) 2025:283:05:20:00.000   4.7   --    --                     12.0000   0.1700 331.65 172.68  42.48   
 ----      42045               CAL-ER (CAL01) 2025:283:07:13:25.159   3.0   --    --                    286.0000 -47.0000 274.86  85.44  88.14   
601640     30153    0                 NGC2566 2025:283:09:29:40.488  15.4 ACIS-S NONE       I3,S2,S3,S4 124.6900 -25.4995  84.00  69.95 111.10 dss pspc rass
705255 P1  29967    0    SDSS J015634.87-0110 2025:283:14:22:51.278  18.2 ACIS-S NONE             S2,S3  29.1444  -1.1837  58.85 164.49  94.56 dss pspc rass
201894 CCT 31914    0     HEP G226.816-02.799 2025:283:19:59:48.942  10.6 ACIS-I NONE       I0,I1,I2,I3 106.7436 -13.6259  83.49  87.68  78.55 dss pspc rass
601640     31916    0                 NGC2566 2025:283:23:21:45.942  14.0 ACIS-S NONE       I3,S2,S3,S4 124.6900 -25.4995  84.50  70.31  21.22 dss pspc rass
704981     28626    0               Abell 370 2025:284:03:49:23.693  17.2 ACIS-I NONE       I0,I1,I2,I3  39.9604  -1.5856  62.00 154.88  84.58 dss pspc rass
901878     29904    0         IGR J07141+0146 2025:284:09:07:16.641   5.5 ACIS-I NONE       I0,I1,I2,I3 108.5470   1.7440  80.00  88.18  70.72 dss pspc rass
201893 CCT 31913    0     HEP G230.954+02.322 2025:284:10:57:04.018  10.0 ACIS-I NONE       I0,I1,I2,I3 113.4137 -14.8710  84.83  81.60  17.81 dss pspc rass
704981     28637    0               Abell 370 2025:284:14:15:44.048  13.4 ACIS-I NONE       I0,I1,I2,I3  39.9604  -1.5856  62.00 155.19  74.25 dss pspc rass
503610 P1  31132    0    1eRASS J080701.4+023 2025:284:18:33:14.285  15.0 ACIS-S NONE    I2,I3,S2,S3,S4 121.7559   2.6397  81.86  75.58  84.02 dss pspc rass
503454     28051    0          PSR J2229+6114 2025:284:23:23:34.520  39.9 ACIS-I NONE       I0,I1,I2,I3 337.2720  61.2358 226.29 118.54 111.77 dss pspc rass
 ----      42044               CAL-ER (PER12) 2025:285:10:57:54.856   3.0   --    --                     11.7000  12.5000 229.14 172.37  60.16   


Previous weeks' short-term schedules.

Last modified: 10/10/25



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