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.

MAR0821A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     46513       CAL-ER (PER01) 2021:067:13:02:52.102   3.0   --    --  329.3000 -49.4000 153.14  47.58  78.16   
 ----     46512       CAL-ER (PER04) 2021:067:16:00:00.000   3.0   --    --  174.0000  -4.0000  29.93 169.93 122.64   
 ----     46511       CAL-ER (PER02) 2021:067:18:00:00.000   3.0   --    --  159.0000   4.0000 274.39 169.94 116.33   
 ----     46510       CAL-ER (CTI04) 2021:067:20:27:07.859   2.0   --    --   37.7000   1.1000 277.18  48.83 121.22   
704262 P1 24721 0 J090203.91+061849.6 2021:067:22:08:20.854   3.6 ACIS-S NONE 135.5054   6.3377 268.86 146.39  97.63 dss pspc rass
201369    23382 2             TW Hya 2021:067:23:43:45.859  28.0  HRC-S LETG 165.4400 -34.7139 353.94 140.50  89.63 dss pspc rass
503251    24274 0      SNR 0519-69.0 2021:068:07:58:33.011  25.0 ACIS-S NONE  79.8644 -69.0114 271.84  85.88  56.79 dss pspc rass
201370    23383 2             TW Hya 2021:068:15:23:18.702  28.0  HRC-S LETG 165.4434 -34.7125 352.96 140.67  56.68 dss pspc rass
201401 P1 23414 0 2MASS J20320890-4742 2021:068:23:45:46.010  10.0 ACIS-S NONE 308.0662 -47.7121 126.58  56.48  91.30 dss pspc rass
201448    24985 0         CD-29 8887 2021:069:03:09:03.978   5.0 ACIS-S NONE 167.2832 -30.0354 354.56 145.63  95.10 dss pspc rass
590601    24581 2         E0102-72.3 2021:069:05:04:56.216  32.5 ACIS-I NONE  15.6854 -72.0395 197.69  69.67  76.67 dss pspc rass
201371    23384 2             TW Hya 2021:069:14:38:02.079  28.6  HRC-S LETG 165.4463 -34.7113 351.53 140.95  71.69 dss pspc rass
704257 P1 24716 0 J110632.29+292314.4 2021:069:23:25:42.978   6.0 ACIS-S NONE 166.6518  29.4008 195.99 154.11 159.37 dss pspc rass
 ----     46509       CAL-ER (CTI01) 2021:070:01:24:36.842   2.0   --    --  170.0000  10.0000 190.80 173.72  20.06   
 ----     46508       CAL-ER (PER05) 2021:070:03:00:00.000   2.0   --    --  175.3200  -2.4500  42.70 172.54 147.98   
 ----     46507       CAL-ER (CAL01) 2021:070:04:30:00.000   3.0   --    --  314.0000 -39.0000 126.58  48.83 123.86   
 ----     46506       CAL-ER (CAL01) 2021:070:07:30:00.000   2.0   --    --  174.3000  -2.6000  24.60 173.07 124.58   
 ----     46505       CAL-ER (PER06) 2021:070:09:00:00.000   2.0   --    --  180.0000   4.0000  91.90 171.50  67.86   
 ----     46504       CAL-ER (PER07) 2021:070:11:00:00.000   2.0   --    --  302.0000   7.0000  79.41  50.61 121.20   
 ----     46503       CAL-ER (PER03) 2021:070:11:50:00.794   1.0   --    --  302.0000   7.0000  79.44  50.64   0.02   
704215    23803 0    SDSS J1138+0314 2021:070:13:01:56.794  15.0 ACIS-S NONE 174.5294   3.2305 100.50 177.10 126.58 dss pspc rass
601449    24826 0          H1821+643 2021:070:17:51:47.909  36.0  HRC-S LETG 275.5148  64.3249  92.48  87.34 109.58 dss pspc rass
704215    24983 0    SDSS J1138+0314 2021:071:04:31:14.093  15.0 ACIS-S NONE 174.5305   3.2317 104.50 177.73 107.71 dss pspc rass
601449    22469 0          H1821+643 2021:071:09:20:40.277  31.0  HRC-S LETG 275.5138  64.3257  92.48  87.38 107.71 dss pspc rass
201432 P1 24687 0 2RXS J041939.0-12121 2021:071:18:41:51.289   3.0 ACIS-I NONE  64.9026 -12.1869 269.35  71.85 130.58 dss pspc rass
704170    23758 0 SDSS J110202.68-0007 2021:071:20:09:43.619  26.9 ACIS-S NONE 165.4937  -0.1167 293.95 171.96 100.67 dss pspc rass
201429 P1 24684 0              HR858 2021:072:04:19:42.250   2.0 ACIS-S NONE  42.9819 -30.7909 249.54  54.53 117.65 dss pspc rass
601449    24984 0          H1821+643 2021:072:05:42:45.810  41.1  HRC-S LETG 275.5059  64.3240  81.98  87.40 154.02 dss pspc rass
 ----     46502       CAL-ER (CTI02) 2021:072:17:42:40.740   3.0   --    --  176.0000  11.0000 163.95 171.44  84.24   
 ----     46501       CAL-ER (CTI03) 2021:072:20:00:00.000   2.0   --    --  175.0000  -3.0000  12.61 174.14 151.63   
 ----     46500       CAL-ER (PER08) 2021:072:23:00:00.000   3.0   --    --  329.3000 -49.4000 147.83  51.21 123.17   
 ----     46499       CAL-ER (PER09) 2021:073:02:00:00.000   3.0   --    --  174.3000  -2.6000   3.54 174.78 124.16   
 ----     46498       CAL-ER (CTI07) 2021:073:03:35:06.843   2.0   --    --  179.0000  -2.0000  47.22 173.25  43.74   
704226 P1 23814 1        ESO234-G050 2021:073:05:04:05.702  20.0 ACIS-S NONE 309.0240 -50.2037 125.97  60.93 113.12 dss pspc rass
201372    23385 2             TW Hya 2021:073:11:12:53.437  28.0  HRC-S LETG 165.4414 -34.7102 345.49 141.88  89.83 dss pspc rass
601470    22493 0 J132751.6+480805.3 2021:073:19:53:13.083  16.0 ACIS-S NONE 201.9993  48.1322 147.97 128.53 171.72 dss pspc rass
503212    24434 0       PSR B2224+65 2021:074:00:49:03.731  30.0 ACIS-I NONE 336.4548  65.5930  11.98  69.16  61.55 dss pspc rass


MAR0121A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
704291    24973 0 SDSSJ110700.50+02584 2021:060:05:01:40.207  20.0 ACIS-S NONE 166.7385   2.9613  27.00 173.41 112.77 dss pspc rass
 ----     46538       CAL-ER (IAT01) 2021:060:10:58:06.416   0.9   --    --  186.0000 -25.5000  38.03 139.71  34.75   
402254    23476 1                M51 2021:060:11:54:20.858  35.0 ACIS-S NONE 202.4540  47.2251 126.20 127.67 112.76 dss pspc rass
704023    23035 0            Mrk 279 2021:060:21:58:27.880  20.0  HRC-S LETG 208.3178  69.3030 134.95 111.44  26.17 dss pspc rass
601446    21649 1      NGC 4472 ULXs 2021:061:04:05:08.250  20.0 ACIS-S NONE 187.4271   7.8914  97.50 155.75  80.28 dss pspc rass
704023    23036 0            Mrk 279 2021:061:10:11:48.625  20.0  HRC-S LETG 208.3151  69.3034 134.95 111.38  80.28 dss pspc rass
704167 P1 23755 0 SDSS J102541.78+2454 2021:061:16:14:16.225  10.0 ACIS-S NONE 156.4411  24.9202 194.99 160.96  56.40 dss pspc rass
704023    24976 0            Mrk 279 2021:061:19:28:58.263  26.0  HRC-S LETG 208.3136  69.3035 134.95 111.33  56.40 dss pspc rass
 ----     46537       CAL-ER (CTI01) 2021:062:03:20:34.040   1.0   --    --  203.8000  -8.6000  69.96 137.26  99.71   
 ----     46536       CAL-ER (CTI02) 2021:062:04:00:44.223   3.0   --    --  170.3000   3.2400  60.12 172.62  36.35   
 ----     46535       CAL-ER (PER01) 2021:062:05:30:00.000   1.0   --    --  167.7850  10.8000 135.58 174.51  75.51   
 ----     46534       CAL-ER (PER03) 2021:062:07:15:00.000   1.0   --    --  228.3000  38.8000 101.20 114.19  60.66   
 ----     46533       CAL-ER (PER02) 2021:062:08:35:00.000   3.0   --    --  167.7850  10.8000 137.03 174.55  60.81   
 ----     46532       CAL-ER (PER04) 2021:062:10:08:53.012   1.0   --    --  322.0000  36.0000  30.45  47.54 127.73   
 ----     46531       CAL-ER (PER05) 2021:062:12:20:00.000   1.0   --    --  339.0000 -55.0000 173.08  48.45 151.61   
 ----     46530       CAL-ER (CTI03) 2021:062:13:29:34.551   1.0   --    --  339.0000 -55.0000 173.01  48.47   0.06   
590600    24580 2         E0102-72.3 2021:062:14:44:35.751  28.0 ACIS-I NONE  15.8370 -72.0302 202.84  68.15  23.25 dss pspc rass
201447    24974 0 2RXS J105203.7+00324 2021:062:23:10:17.918  20.0 ACIS-S NONE 162.9927   0.5386 349.00 173.73 105.91 dss pspc rass
801925    24471 0   SPT-CLJ2355-5514 2021:063:05:26:39.417  28.0 ACIS-I NONE 358.8562 -55.2236 193.99  50.00 123.86 dss pspc rass
 ----     46529       CAL-ER (IAT03) 2021:063:13:56:19.738   0.9   --    --  164.5800   0.1000 354.17 173.71 123.77   
601500    24440 0                M96 2021:063:14:55:28.044  18.0 ACIS-I NONE 161.6945  11.8407 229.00 173.48 125.80 dss pspc rass
 ----     46528       CAL-ER (IAT04) 2021:063:20:37:27.227   0.9   --    --   20.7000  37.4000 315.32  54.63 119.19   
503169    22446 0            3C434.1 2021:063:21:20:05.724  25.0 ACIS-I NONE 321.3957  51.9265  28.02  61.71  51.56 dss pspc rass
 ----     46527       CAL-ER (IAT05) 2021:064:04:43:41.685   0.9   --    --   20.7000  37.4000 315.54  54.35  51.45   
601500    24441 0                M96 2021:064:05:41:21.647  17.0 ACIS-I NONE 161.6948  11.8417 229.00 172.97 119.17 dss pspc rass
 ----     46526       CAL-ER (IAT06) 2021:064:11:06:40.448   0.9   --    --   20.7000  37.4000 315.71  54.13 119.16   
503169    24975 0            3C434.1 2021:064:11:49:16.242  24.7 ACIS-I NONE 321.3952  51.9262  28.02  61.64  51.36 dss pspc rass
 ----     46525       CAL-ER (CTI04) 2021:064:18:58:38.350   3.0   --    --  322.0000  36.0000  33.62  47.68  17.03   
 ----     46524       CAL-ER (PER06) 2021:064:20:31:57.867   2.0   --    --  170.2864  11.8853 146.97 172.83 125.21   
 ----     46523       CAL-ER (PER09) 2021:064:21:35:38.496   1.0   --    --  162.5000  11.4100 214.95 173.21  66.80   
 ----     46522       CAL-ER (PER07) 2021:064:22:30:00.000   3.0   --    --  100.0000  58.0000 252.72 107.25  66.02   
 ----     46521       CAL-ER (PER08) 2021:065:04:10:00.000   1.0   --    --  160.0000  13.0000 222.74 170.17  64.02   
 ----     46520       CAL-ER (CTI05) 2021:065:05:13:28.133   1.0   --    --   20.7000  37.4000 316.21  53.47 116.84   
601500    24442 0                M96 2021:065:06:23:32.134  19.0 ACIS-I NONE 161.6946  11.8409 229.00 172.05 119.12 dss pspc rass
 ----     46519       CAL-ER (IAT02) 2021:065:12:22:10.253   0.9   --    --   20.7000  37.4000 316.44  53.22 119.11   
704074    23662 0 SDSS J022429.10-0918 2021:065:13:07:40.280  25.5 ACIS-S NONE  36.1104  -9.2908 269.00  48.75  64.43 dss pspc rass
 ----     46518       CAL-ER (IAT07) 2021:065:20:56:14.296   0.9   --    --  162.0000   3.0000 294.98 174.12 126.30   
601500    24979 0                M96 2021:065:21:42:12.520  20.0 ACIS-I NONE 161.6951  11.8426 229.00 171.49  66.54 dss pspc rass
 ----     46517       CAL-ER (IAT08) 2021:066:03:45:24.493   0.9   --    --  162.0000   3.0000 293.06 173.92  64.65   
704074    24978 0 SDSS J022429.10-0918 2021:066:04:44:38.086  24.5 ACIS-S NONE  36.1095  -9.2890 269.00  48.19 126.19 dss pspc rass
 ----     46516       CAL-ER (IAT09) 2021:066:12:16:29.270   0.9   --    --  162.0000   3.0000 290.83 173.67 126.09   
601500    24980 0                M96 2021:066:13:01:32.721  16.0 ACIS-I NONE 161.6956  11.8443 229.00 170.93  62.43 dss pspc rass
 ----     46515       CAL-ER (IAT10) 2021:066:17:55:10.258   0.9   --    --  168.8300  15.7000 176.30 169.42  51.57   
704023    24977 0            Mrk 279 2021:066:18:39:39.619  28.0  HRC-S LETG 208.3347  69.3008 134.93 110.65  59.88 dss pspc rass
901432 P1 23642 0 NuSTAR J191044+0743. 2021:067:02:59:27.200  10.0 ACIS-S NONE 287.6936   7.7037  80.13  61.96  79.32 dss pspc rass
601446    24981 1      NGC 4472 ULXs 2021:067:06:23:37.313  11.6 ACIS-S NONE 187.4298   7.8872  97.50 161.07  99.01 dss pspc rass
 ----     46514       CAL-ER (CTI06) 2021:067:10:15:05.335   3.0   --    --  292.6301   1.3714  83.25  56.41 104.87   


Previous weeks' short-term schedules.

Last modified: 03/06/21



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