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.

DEC0125A


Seq #  NB  ObsID Constr.          Target                Start        Time   SI   Grat    Active Chips      RA       Dec    Roll   Pitch   Slew   Overlays
------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ -------------
 ----      41918               CAL-ER (IAT01) 2025:335:01:42:54.185   0.9   --    --                     65.7535  24.1168 206.69 177.41  24.58   
 ----      41917               CAL-ER (IAT02) 2025:335:02:33:33.210   0.9   --    --                     70.3000  23.4000 117.34 176.60  87.60   
 ----      41916               CAL-ER (IAT03) 2025:335:03:21:27.747   0.9   --    --                    155.7936  33.8172  85.99 102.95  75.27   
705244     29956    0    SDSS J101756.75+3448 2025:335:03:46:34.070  22.3 ACIS-S NONE             S2,S3 154.4865  34.8141  85.99 104.27   1.62 dss pspc rass
 ----      41915               CAL-ER (CAL01) 2025:335:10:08:23.918   0.9   --    --                    155.7764  33.8376  86.00 103.22   1.60   
705316     30064    0    Center of COSMOS-Web 2025:335:10:47:52.725  21.5 ACIS-I NONE       I0,I1,I2,I3 150.1211   2.0920  68.24  97.53  37.55 dss pspc rass
 ----      41914               CAL-ER (PER01) 2025:335:17:16:46.910   3.0   --    --                     79.9946  20.2130  79.59 168.41  70.77   
 ----      41913               CAL-ER (PER02) 2025:336:00:36:00.000   3.0   --    --                    139.3000   1.3000  67.38 107.86  60.87   
705316     32027    0    Center of COSMOS-Web 2025:336:05:31:18.870  16.5 ACIS-I NONE       I0,I1,I2,I3 150.1211   2.0920  60.00  98.35  12.94 dss pspc rass
802196     30287    0         Perseus cluster 2025:336:10:51:22.354  10.9 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 211.99 155.01 130.01 dss pspc rass
201854     31524    0                V444 Cyg 2025:336:14:25:40.518  14.5 ACIS-S HETG S0,S1,S2,S3,S4,S5 304.8851  38.7317 304.52  80.35  75.63 dss pspc rass
802196     32028    0         Perseus cluster 2025:336:18:59:37.070  10.9 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 212.99 154.87  75.49 dss pspc rass
201854     32034    0                V444 Cyg 2025:336:22:33:55.234  14.8 ACIS-S HETG S0,S1,S2,S3,S4,S5 304.8851  38.7317 304.52  80.17  75.49 dss pspc rass
802196     30288    0         Perseus cluster 2025:337:03:12:51.786  11.1 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 213.00 154.72  75.49 dss pspc rass
201854     31526    0                V444 Cyg 2025:337:06:51:19.950  14.5 ACIS-S HETG S0,S1,S2,S3,S4,S5 304.8851  38.7317 304.52  79.99  75.49 dss pspc rass
802196     32029    0         Perseus cluster 2025:337:11:25:16.502  10.9 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 213.00 154.56  75.49 dss pspc rass
201854     32035    0                V444 Cyg 2025:337:14:59:34.666  14.6 ACIS-S HETG S0,S1,S2,S3,S4,S5 304.8851  38.7317 304.52  79.80  75.49 dss pspc rass
802196     30290    0         Perseus cluster 2025:337:19:36:01.218  10.8 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 213.00 154.39  75.49 dss pspc rass
705308     30056    0    Center of COSMOS-Web 2025:337:23:19:39.494  32.5 ACIS-I NONE       I0,I1,I2,I3 150.2124   2.3427  60.00 100.07 130.37 dss pspc rass
 ----      41912               CAL-ER (PER03) 2025:338:08:54:34.750   3.0   --    --                     77.5227  24.0142 104.04 173.37  76.74   
 ----      41911               CAL-ER (PER04) 2025:338:14:55:00.000   3.0   --    --                     55.3221  30.0724 244.39 164.04 131.00   
 ----      41910               CAL-ER (PER05) 2025:338:16:30:00.000   1.0   --    --                     10.4000  39.8000 270.00 126.32  37.69   
 ----      41909               CAL-ER (PER06) 2025:338:17:10:51.933   3.0   --    --                     57.3413  33.9792 229.23 163.26  39.22   
 ----      41908               CAL-ER (PER07) 2025:338:19:55:00.000   3.0   --    --                    288.7375  12.2351 312.98  50.54 112.83   
503503     28359    1                GW170817 2025:338:21:56:18.886  11.5 ACIS-S NONE    I2,I3,S1,S2,S3 197.4504 -23.3815  77.00  49.24 150.94 dss pspc rass
705308     30241    0    Center of COSMOS-Web 2025:339:01:35:17.906  34.2 ACIS-I NONE       I0,I1,I2,I3 150.2124   2.3427  60.00 101.19  53.18 dss pspc rass
 ----      41907               CAL-ER (IAT05) 2025:339:11:32:39.981   0.0   --    --                    114.0676  57.6003 120.97 133.53  72.91   
100240     31039    0         IRAS 04125+2902 2025:339:12:06:43.274  13.5 ACIS-S NONE    I3,S1,S2,S3,S4  63.9283  29.1666 228.22 170.20  81.92 dss pspc rass
 ----      41906               CAL-ER (IAT04) 2025:339:16:37:01.929   0.9   --    --                     90.3497  21.6165  83.73 163.01 134.15   
503503     32026    1                GW170817 2025:339:17:33:28.374  17.0 ACIS-S NONE    I2,I3,S1,S2,S3 197.4504 -23.3815  77.00  50.00 113.66 dss pspc rass
 ----      41905               CAL-ER (IAT06) 2025:339:22:50:32.452   0.9   --    --                    148.5729  45.3526  82.84 115.23  82.06   
100240     32032    0         IRAS 04125+2902 2025:339:23:43:20.798  15.0 ACIS-S NONE    I3,S1,S2,S3,S4  63.9283  29.1666 216.99 169.91  97.30 dss pspc rass
705510 CCT 32024    0            B2.2 2117+25 2025:340:04:29:01.655  16.0 ACIS-S NONE          S2,S3,S4 320.0319  25.8508 300.33  81.27  90.81 dss pspc rass
100240     32033    0         IRAS 04125+2902 2025:340:09:31:22.510  11.5 ACIS-S NONE I2,I3,S1,S2,S3,S4  63.9283  29.1666 216.99 169.64  90.81 dss pspc rass
705511 CCT 32025    0            B2.2 2120+26 2025:340:13:18:30.897  15.9 ACIS-S NONE          S2,S3,S4 320.7217  26.6696 300.31  81.93  89.88 dss pspc rass
802230     31977    0       PSZ2G144.99-24.64 2025:340:18:13:26.661   9.6 ACIS-I NONE       I0,I1,I2,I3  37.1891  34.0270 259.53 146.50  64.93 dss pspc rass
705436 P1  31289    0                 Mrk 317 2025:340:21:18:40.536   9.6 ACIS-S NONE             S2,S3 348.4513  23.8206 289.06 103.32  43.69 dss pspc rass
 ----      41904               CAL-ER (PER08) 2025:341:00:46:26.494   3.0   --    --                    120.1321 -41.1483  43.56 102.98 144.83   
 ----      41903               CAL-ER (PER09) 2025:341:09:58:00.000   3.0   --    --                    337.4872  49.6173 289.68 103.06 172.65   
802196     32030    0         Perseus cluster 2025:341:11:17:56.705  15.2 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 234.24 152.40  49.37 dss pspc rass
705509 CCT 32023    0            B2.4 2111+23 2025:341:16:04:29.101  16.8 ACIS-S NONE          S2,S3,S4 318.3341  23.3654 290.51  77.48  75.93 dss pspc rass
802196     32031    0         Perseus cluster 2025:341:21:16:51.789  13.5 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 235.01 152.18  75.95 dss pspc rass


NOV2425A


Seq #  NB  ObsID Constr.          Target                Start        Time   SI   Grat    Active Chips      RA       Dec    Roll   Pitch   Slew   Overlays
------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ -------------
 ----      41932               CAL-ER (PER01) 2025:327:21:33:05.077   3.0   --    --                     71.6435  18.9281  80.40 168.33  52.13   
 ----      41931               CAL-ER (PER02) 2025:328:02:00:00.000   3.0   --    --                    184.7000 -33.6000  90.51  50.00 119.73   
 ----      41930               CAL-ER (PER03) 2025:328:04:00:00.000   3.0   --    --                     81.4000  32.6000 108.00 157.18 118.31   
705269     31879    0                BOSS1348 2025:328:06:32:54.070  14.5 ACIS-I NONE       I0,I1,I2,I3 207.0600  23.9800  32.00  54.74 103.61 dss pspc rass
802196     30281    0         Perseus cluster 2025:328:11:15:30.689  10.0 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 205.09 157.42 114.50 dss pspc rass
705279     29991    0                NGC 4051 2025:328:14:38:37.605  33.0 ACIS-S HETG             S2,S3 180.7900  44.5313  44.01  84.66  94.27 dss pspc rass
802196     32014    0         Perseus cluster 2025:329:00:25:12.501  10.0 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 206.50 157.36  94.87 dss pspc rass
705279     32010    0                NGC 4051 2025:329:03:48:16.092  13.0 ACIS-S HETG             S2,S3 180.7900  44.5313  46.01  85.08  94.02 dss pspc rass
802196     32015    0         Perseus cluster 2025:329:08:01:24.175  10.0 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 207.30 157.30  94.36 dss pspc rass
 ----      41929               CAL-ER (IAT01) 2025:329:11:08:58.342   0.9   --    --                     61.1063  28.6896 179.34 172.13  26.58   
705269     32021    0                BOSS1348 2025:329:12:07:08.316  14.5 ACIS-I NONE       I0,I1,I2,I3 207.0600  23.9800  32.00  55.68 121.42 dss pspc rass
802196     30317    0         Perseus cluster 2025:329:16:49:53.411  11.0 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 208.22 157.23 115.13 dss pspc rass
300559     30102    0                  AN UMa 2025:329:20:29:02.671  33.0 ACIS-S HETG    S1,S2,S3,S4,S5 166.1069  45.0539  58.00  94.86  91.44 dss pspc rass
802196     32016    0         Perseus cluster 2025:330:06:13:47.811  12.0 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 197.99 157.10  86.64 dss pspc rass
 ----      41928               CAL-ER (PER04) 2025:330:09:51:33.379   3.0   --    --                     61.0659  28.0381 187.13 172.87  16.85   
 ----      41927               CAL-ER (PER05) 2025:330:17:20:00.000   3.0   --    --                     29.5000  53.0000 230.98 139.30  40.70   
 ----      41926               CAL-ER (PER06) 2025:330:21:30:00.000   3.0   --    --                    233.5566  26.9258  11.20  48.77  97.43   
402588     30532    0              Cygnus X-2 2025:330:23:29:00.063  42.1 ACIS-S HETG             S2,S3 326.1715  38.3214 281.01  98.07  80.82 dss pspc rass
802196     31987    0         Perseus cluster 2025:331:11:42:51.227   9.7 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 212.78 156.81  62.17 dss pspc rass
 ----      41925               CAL-ER (IAT02) 2025:331:14:59:15.270   0.9   --    --                    246.2937  51.6839 357.10  72.95  86.55   
503530     30121    0          PSR J1015-5719 2025:331:16:02:38.792  10.0 ACIS-I NONE       I0,I1,I2,I3 153.9082 -57.3202  70.58  71.92 144.94 dss pspc rass
201820     30521    1                zeta Tau 2025:331:19:28:11.788  12.5 ACIS-S HETG S0,S1,S2,S3,S4,S5  84.4112  21.1425  85.79 160.53 105.22 dss pspc rass
503530     32011    0          PSR J1015-5719 2025:331:23:35:22.614  10.0 ACIS-I NONE       I0,I1,I2,I3 153.9082 -57.3202  71.08  72.05 105.06 dss pspc rass
601640     31482    0                 NGC2566 2025:332:02:47:19.614  20.0 ACIS-S NONE       I3,S2,S3,S4 124.6900 -25.4995  57.26 104.65  38.60 dss pspc rass
201820     32018    1                zeta Tau 2025:332:08:54:07.778  12.5 ACIS-S HETG S0,S1,S2,S3,S4,S5  84.4112  21.1425  85.60 161.08  67.24 dss pspc rass
503530     32012    0          PSR J1015-5719 2025:332:13:01:17.798  10.0 ACIS-I NONE       I0,I1,I2,I3 153.9082 -57.3202  71.07  72.29 105.00 dss pspc rass
 ----      41924               CAL-ER (IAT03) 2025:332:16:15:49.673   0.9   --    --                    183.3000  -9.6000  70.75  59.73  55.64   
201820     32019    1                zeta Tau 2025:332:17:09:36.167  12.5 ACIS-S HETG S0,S1,S2,S3,S4,S5  84.4112  21.1425  85.50 161.42 101.66 dss pspc rass
503613 P1  31135    0    1eRASS J120844.7+144 2025:332:21:14:00.315  14.3 ACIS-S NONE    I2,I3,S2,S3,S4 182.1869  14.8056  60.72  71.16  92.56 dss pspc rass
 ----      41923               CAL-ER (PER08) 2025:333:01:48:39.382   3.0   --    --                     75.7882  27.1417 117.43 168.53  97.38   
 ----      41922               CAL-ER (PER09) 2025:333:03:30:15.536   3.0   --    --                     53.7206  18.3580 288.21 169.01 162.46   
 ----      41921               CAL-ER (PER07) 2025:333:05:52:00.000   3.0   --    --                    299.4000 -19.8000 281.98  50.64 118.36   
 ----      41920               CAL-ER (PER10) 2025:333:10:13:43.171   1.0   --    --                     53.9381  19.2905 283.64 169.16 118.73   
 ----      41919               CAL-ER (PER11) 2025:333:11:21:05.673   3.0   --    --                     76.3346  27.0763 116.67 168.53 158.44   
601656     30174    0                 NGC4654 2025:333:13:19:25.441  14.5 ACIS-S NONE       I3,S2,S3,S4 190.9859  13.1265  52.00  63.65 105.19 dss pspc rass
201820     32020    1                zeta Tau 2025:333:17:58:58.869  10.0 ACIS-S HETG S0,S1,S2,S3,S4,S5  84.4112  21.1425  83.00 162.49 100.76 dss pspc rass
601656     32013    0                 NGC4654 2025:333:21:23:32.298  14.2 ACIS-S NONE       I3,S2,S3,S4 190.9859  13.1265  52.00  63.98 100.76 dss pspc rass
802196     32017    0         Perseus cluster 2025:334:02:03:15.585  10.0 ACIS-I NONE       I0,I1,I2,I3  49.9508  41.5117 203.99 155.98 120.25 dss pspc rass
601737 CCT 32009    0                NGC 5523 2025:334:05:30:30.862  10.5 ACIS-I NONE       I0,I1,I2,I3 213.7180  25.3176  31.00  56.53 112.90 dss pspc rass
802196     31988    0         Perseus cluster 2025:334:09:06:15.579   9.7 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 208.99 155.88 113.60 dss pspc rass
705473 P1  31438    0         IRAS 14026+4341 2025:334:12:24:37.680  10.5 ACIS-S NONE             S2,S3 211.1617  43.4521  34.18  72.76  95.41 dss pspc rass
802196     31989    0         Perseus cluster 2025:334:15:56:09.083   9.8 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 203.99 155.77  94.61 dss pspc rass
705438 P1  31291    0                NGC 6740 2025:334:19:16:02.163  10.0 ACIS-S NONE             S2,S3 285.2105  28.7712 319.45  62.68  94.73 dss pspc rass
802196     31990    0         Perseus cluster 2025:334:22:39:15.242   9.8 ACIS-I NONE    I0,I1,I2,I3,S2  49.9508  41.5117 203.99 155.66  94.73 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 11/28/25



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