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.

MAR2624A


Seq #  NB  ObsID Constr.          Target                Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew   Overlays
------ --- ----- ------- -------------------- --------------------- ----- ------ ---- -------- -------- ------ ------ ------ -------------
201735 DDT 29353    1               EP240315A 2024:086:04:56:53.139  18.7 ACIS-S NONE 141.6357  -9.5120 276.71 136.06 115.66 dss pspc rass
601587     28759    0                 NGC4261 2024:086:10:50:58.139   7.9  HRC-I NONE 184.8610   5.8388 197.00 171.81  91.19 dss pspc rass
402524 DDT 29332    1                A0620-00 2024:086:13:42:41.158  17.7 ACIS-S NONE  95.6738  -0.3231 276.00  90.10 110.48 dss pspc rass
704676     26755    0                VCC 1450 2024:086:19:18:02.139  10.4 ACIS-S NONE 188.1836  14.0617 185.00 163.31 114.30 dss pspc rass
 ----      43587               CAL-ER (IAT01) 2024:086:22:55:32.180   0.9   --    --  199.4800 -12.6000  54.13 163.23 132.38   
503509     28781    2        1E 161348-5055.1 2024:086:23:38:50.861  30.0 ACIS-S NONE 244.3995 -51.0658  65.99 111.29  54.58 dss pspc rass
802025     27187    0       MCXC J0928.6+3747 2024:087:08:53:04.928  30.0 ACIS-I NONE 142.0458  37.7924 235.73 122.44 174.31 dss pspc rass
601587     29350    0                 NGC4261 2024:087:17:55:29.928  10.8  HRC-I NONE 184.8587   5.8384 201.00 171.14  53.05 dss pspc rass
402524 DDT 29351    1                A0620-00 2024:087:21:35:28.591  18.3 ACIS-S NONE  95.6757  -0.3242 273.40  88.89 107.15 dss pspc rass
704653     29344    0    2MASS J08194059+0823 2024:088:03:05:45.591  14.6 ACIS-I NONE 124.9091   8.4137 266.00 117.05  30.86 dss pspc rass
 ----      43586               CAL-ER (PER06) 2024:088:07:38:01.224   3.0   --    --  180.8950   0.0250 243.62 173.01  58.94   
 ----      43585               CAL-ER (CAL01) 2024:088:09:03:15.764   0.9   --    --  183.7530  -9.6940 332.24 172.57  88.84   
 ----      43584               CAL-ER (CAL01) 2024:088:10:01:37.660   0.9   --    --   49.0000 -29.0000 238.42  51.31 122.32   
 ----      43583               CAL-ER (CAL01) 2024:088:10:59:58.963   1.0   --    --  183.7530  -9.6940 331.66 172.57 122.27   
 ----      43582               CAL-ER (PER07) 2024:088:11:54:08.650   0.9   --    --   74.0000 -41.0000 251.84  74.81  98.98   
 ----      43581               CAL-ER (CAL01) 2024:088:12:25:00.000   0.9   --    --   74.0000 -41.0000 251.82  74.80   0.02   
 ----      43580               CAL-ER (CAL01) 2024:088:13:20:00.000   2.2   --    --   74.0000 -41.0000 251.79  74.79   0.03   
 ----      43579               CAL-ER (PER08) 2024:088:14:35:13.529   4.4   --    --  186.1530  -5.7850 334.15 177.12 103.76   
 ----      43578               CAL-ER (CAL01) 2024:088:16:25:38.507   0.9   --    --  180.8950   0.0250 237.00 172.66  97.12   
503443     27361    0       4FGL J0140.4+5114 2024:088:17:25:42.701  12.8 ACIS-S NONE  25.0547  51.2211 332.73  50.19 127.77 dss pspc rass
704669     26748    0                 VCC 450 2024:088:21:40:17.248  10.8 ACIS-S NONE 185.2722   7.0909 201.00 169.34 119.59 dss pspc rass
503443     29346    0       4FGL J0140.4+5114 2024:089:01:22:21.205  11.0 ACIS-S NONE  25.0509  51.2208 333.53  50.00 119.55 dss pspc rass
705173 CCT 29340    0    SDSSJ122404.62+04563 2024:089:05:08:11.625  15.0 ACIS-S NONE 186.0430   4.9605 193.16 171.41 121.53 dss pspc rass
503443     29347    0       4FGL J0140.4+5114 2024:089:10:00:41.958  13.4 ACIS-S NONE  25.0465  51.2206 334.04  49.79 121.53 dss pspc rass
704625     26704    0    SDSS J131206.32+3909 2024:089:14:20:14.356  26.0 ACIS-S NONE 198.0656  39.1620 165.88 136.36  89.43 dss pspc rass
705010 P1  28201    0            FRB20211127I 2024:089:22:19:09.469   5.5 ACIS-S NONE 199.7923 -18.8641  36.99 161.32 135.38 dss pspc rass
503345     28755    1               SNR 1987A 2024:090:00:34:50.469  14.5  HRC-S LETG  83.8558 -69.2449 251.99  88.27  90.09 dss pspc rass
705174 CCT 29341    0     NVSS J122810-092702 2024:090:05:11:04.913  11.0 ACIS-S NONE 187.0128  -9.4527 341.41 174.03  85.83 dss pspc rass
802040     26926    0            DES0424-3317 2024:090:08:54:49.843  12.7 ACIS-I NONE  66.1271 -33.2812 245.28  65.39 112.12 dss pspc rass
802192 CCT 29342    0    RMJ120920.0-021330.2 2024:090:13:07:29.915  11.0 ACIS-I NONE 182.3216  -2.2295 270.00 172.91 112.88 dss pspc rass
802040     29343    0            DES0424-3317 2024:090:16:51:24.757  12.3 ACIS-I NONE  66.1271 -33.2806 245.18  65.25 112.86 dss pspc rass
705082 P1  28273    0    SDSS J094422.03+4727 2024:090:20:55:27.489   3.3 ACIS-S NONE 146.1057  47.4884 229.64 115.95 107.83 dss pspc rass
 ----      43577               CAL-ER (CAL01) 2024:090:22:43:21.722   1.0   --    --  250.0000 -48.0000  69.88 112.48 172.05   
 ----      43576               CAL-ER (PER10) 2024:090:23:29:17.216   3.0   --    --  192.6607  -9.8822  28.08 173.47  61.91   
 ----      43575               CAL-ER (PER11) 2024:091:01:01:01.001   3.0   --    --  327.9973 -36.0267 126.86  55.92 118.03   
 ----      43574               CAL-ER (CAL01) 2024:091:02:32:45.222   1.0   --    --  192.6607  -9.8822  27.49 173.57 118.07   
 ----      43573               CAL-ER (CAL01) 2024:091:03:18:41.798   0.9   --    --  250.0000 -48.0000  69.81 112.64  61.99   
 ----      43572               CAL-ER (CAL01) 2024:091:03:52:00.000   0.9   --    --  250.0000 -48.0000  69.80 112.66   0.01   
 ----      43571               CAL-ER (CAL01) 2024:091:04:48:00.000   2.0   --    --  250.0000 -48.0000  69.78 112.69   0.02   
 ----      43570               CAL-ER (PER12) 2024:091:06:01:32.154   1.0   --    --  265.9411  58.1118 104.03  93.66 111.16   
 ----      43569               CAL-ER (PER13) 2024:091:06:51:36.992   0.9   --    --  191.4919   3.0470 167.29 172.54  80.61   
 ----      43568               CAL-ER (PER14) 2024:091:07:48:29.335   0.9   --    --  327.7207  49.9447  52.26  57.84 115.60   
705105     28296    1    SDSS J125142.28+2404 2024:091:09:01:32.171  11.5 ACIS-S NONE 192.9564  24.0842 173.69 151.51  96.17 dss pspc rass
704654     29345    0               4C +62.29 2024:091:12:42:45.972  12.2 ACIS-S NONE 266.5908  62.4245  99.97  92.36  63.29 dss pspc rass
705105     29349    1    SDSS J125142.28+2404 2024:091:16:36:06.900  11.5 ACIS-S NONE 192.9553  24.0841 174.34 151.43  63.44 dss pspc rass
601596 P1  28102    0                 UGC4305 2024:091:20:16:59.391   9.5 ACIS-I NONE 124.7578  70.7409 245.51  93.61  61.69 dss pspc rass
601587     29348    0                 NGC4261 2024:091:23:39:20.391  10.0  HRC-I NONE 184.8590   5.8430 208.82 168.23  75.45 dss pspc rass


MAR2524A


Seq #  NB  ObsID Constr.          Target                Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew   Overlays
------ --- ----- ------- -------------------- --------------------- ----- ------ ---- -------- -------- ------ ------ ------ -------------
704653     27145    0    2MASS J08194059+0823 2024:085:02:18:58.282  17.0 ACIS-I NONE 124.9093   8.4131 266.00 119.97  32.03 dss pspc rass
601587     28759    0                 NGC4261 2024:085:07:44:43.282   7.6  HRC-I NONE 184.8599   5.8366 194.00 172.26  85.04 dss pspc rass
402524 DDT 29332    1                A0620-00 2024:085:10:32:26.328  17.6 ACIS-S NONE  95.6750  -0.3251 276.00  91.13 112.05 dss pspc rass
 ----      43586               CAL-ER (PER02) 2024:085:16:01:24.473   3.0   --    --  180.8950   0.0250 241.84 175.63  90.66   
 ----      43585               CAL-ER (PER03) 2024:085:17:33:56.174   3.0   --    --   46.2690  44.0823 306.80  55.73 121.63   
 ----      43584               CAL-ER (CAL01) 2024:085:19:06:27.862   3.0   --    --  180.8950   0.0250 241.83 175.51 121.63   
 ----      43583               CAL-ER (PER01) 2024:085:20:35:07.458   0.9   --    --   70.0000  55.0000 289.64  74.23 104.22   
 ----      43582               CAL-ER (CAL01) 2024:085:20:58:00.000   0.9   --    --   70.0000  55.0000 289.65  74.22   0.01   
 ----      43581               CAL-ER (CAL01) 2024:085:21:53:00.000   2.3   --    --   70.0000  55.0000 289.67  74.19   0.02   
 ----      43580               CAL-ER (PER04) 2024:085:23:20:40.562   0.9   --    --  302.0000 -26.0000 104.64  66.98 152.29   
 ----      43579               CAL-ER (PER05) 2024:086:00:13:03.397   0.9   --    --  199.6100 -12.6020  55.28 162.21  95.39   
503509     28781    2        1E 161348-5055.1 2024:086:02:15:30.413  30.0 ACIS-S NONE 244.3998 -51.0650  66.52 110.54  54.64 dss pspc rass
802025     27187    0       MCXC J0928.6+3747 2024:086:11:29:50.604  30.0 ACIS-I NONE 142.0457  37.7925 235.26 123.24 174.76 dss pspc rass
601587     29350    0                 NGC4261 2024:086:20:32:15.604  10.2  HRC-I NONE 184.8592   5.8372 197.00 171.62  54.24 dss pspc rass
402524 DDT 29351    1                A0620-00 2024:087:00:01:28.729  18.5 ACIS-S NONE  95.6753  -0.3248 275.00  89.70 109.96 dss pspc rass
704669     26748    0                 VCC 450 2024:087:05:49:13.517  10.0 ACIS-S NONE 185.2701   7.0886 201.00 170.24 107.61 dss pspc rass
704653     29344    0    2MASS J08194059+0823 2024:087:09:09:11.615  15.0 ACIS-I NONE 124.9089   8.4143 266.00 117.76  80.11 dss pspc rass
704676     26755    0                VCC 1450 2024:087:13:56:09.104   9.9 ACIS-S NONE 188.1845  14.0595 174.27 163.09  96.56 dss pspc rass
704654     27150    0               4C +62.29 2024:087:17:13:08.371  17.8 ACIS-S NONE 266.5848  62.4269  97.98  92.13  74.20 dss pspc rass
201560     27244    0                NGC 6204 2024:087:22:49:47.848  30.0 ACIS-I NONE 251.5487 -47.0432  76.01 109.15 112.09 dss pspc rass
 ----      43578               CAL-ER (PER06) 2024:088:07:38:56.962   0.9   --    --  191.9600  -8.9660  39.28 172.42  63.12   
 ----      43577               CAL-ER (CAL01) 2024:088:08:24:47.395   0.9   --    --  183.7530  -9.6940 332.43 172.57  65.96   
 ----      43576               CAL-ER (CAL01) 2024:088:09:23:09.461   2.0   --    --   49.0000 -29.0000 238.45  51.32 122.33   
 ----      43575               CAL-ER (CAL01) 2024:088:10:39:09.838   1.0   --    --  183.7530  -9.6940 331.76 172.57 122.28   
 ----      43574               CAL-ER (PER07) 2024:088:11:33:19.666   0.9   --    --   74.0000 -41.0000 251.86  74.81  98.99   
 ----      43573               CAL-ER (CAL01) 2024:088:12:25:00.000   0.9   --    --   74.0000 -41.0000 251.82  74.80   0.03   
 ----      43572               CAL-ER (CAL01) 2024:088:13:20:00.000   2.2   --    --   74.0000 -41.0000 251.79  74.79   0.03   
 ----      43571               CAL-ER (PER08) 2024:088:14:34:47.373   5.0   --    --  185.2000  -6.5000 326.25 176.03 101.80   
 ----      43570               CAL-ER (CAL01) 2024:088:16:33:27.735   0.9   --    --  180.8950   0.0250 237.00 172.65  89.28   
503443     27361    0       4FGL J0140.4+5114 2024:088:17:33:02.267  12.6 ACIS-S NONE  25.0563  51.2210 332.73  50.19 127.77 dss pspc rass
601587     28093    0                 NGC4261 2024:088:21:44:37.267  10.0  HRC-I NONE 184.8614   5.8393 197.34 170.44 120.47 dss pspc rass
503443     29346    0       4FGL J0140.4+5114 2024:089:01:13:33.237  11.4 ACIS-S NONE  25.0523  51.2208 333.53  50.01 120.45 dss pspc rass
705173 CCT 29340    0    SDSSJ122404.62+04563 2024:089:05:06:53.656  15.0 ACIS-S NONE 186.0424   4.9600 193.16 171.41 121.53 dss pspc rass
503443     29347    0       4FGL J0140.4+5114 2024:089:09:59:23.990  13.4 ACIS-S NONE  25.0475  51.2206 334.04  49.79 121.53 dss pspc rass
704625     26704    0    SDSS J131206.32+3909 2024:089:14:18:56.388  26.0 ACIS-S NONE 198.0650  39.1619 165.88 136.36  89.43 dss pspc rass
705010 P1  28201    0            FRB20211127I 2024:089:22:17:51.462   5.5 ACIS-S NONE 199.7925 -18.8637  36.99 161.32 135.38 dss pspc rass
503345     28755    1               SNR 1987A 2024:090:00:33:32.462  14.5  HRC-S LETG  83.8559 -69.2453 251.99  88.27  90.09 dss pspc rass
705174 CCT 29341    0     NVSS J122810-092702 2024:090:05:09:46.912  11.0 ACIS-S NONE 187.0131  -9.4526 341.42 174.03  85.83 dss pspc rass
802040     26926    0            DES0424-3317 2024:090:08:53:31.987  12.7 ACIS-I NONE  66.1271 -33.2815 245.23  65.39 112.13 dss pspc rass
802192 CCT 29342    0    RMJ120920.0-021330.2 2024:090:13:06:14.943  11.0 ACIS-I NONE 182.3217  -2.2297 270.00 172.91 112.87 dss pspc rass
802040     29343    0            DES0424-3317 2024:090:16:50:10.247  12.3 ACIS-I NONE  66.1270 -33.2809 245.38  65.25 112.90 dss pspc rass
705082 P1  28273    0    SDSS J094422.03+4727 2024:090:20:54:37.982   3.3 ACIS-S NONE 146.1056  47.4882 229.64 115.95 107.83 dss pspc rass
 ----      43569               CAL-ER (CAL01) 2024:090:22:43:21.724   1.0   --    --  250.0000 -48.0000  69.88 112.48 172.05   
 ----      43568               CAL-ER (PER10) 2024:090:23:29:17.222   3.0   --    --  192.6607  -9.8822  28.08 173.47  61.91   
 ----      43567               CAL-ER (PER11) 2024:091:01:01:01.010   3.0   --    --  327.9973 -36.0267 126.86  55.92 118.03   
 ----      43566               CAL-ER (CAL01) 2024:091:02:32:45.230   1.0   --    --  192.6607  -9.8822  27.49 173.57 118.07   
 ----      43565               CAL-ER (CAL01) 2024:091:03:18:41.804   0.9   --    --  250.0000 -48.0000  69.81 112.64  61.99   
 ----      43564               CAL-ER (CAL01) 2024:091:03:52:00.000   0.9   --    --  250.0000 -48.0000  69.80 112.66   0.01   
 ----      43563               CAL-ER (CAL01) 2024:091:04:48:00.000   2.0   --    --  250.0000 -48.0000  69.78 112.69   0.02   
 ----      43562               CAL-ER (PER12) 2024:091:06:01:32.153   1.0   --    --  265.9411  58.1118 104.03  93.66 111.16   
 ----      43561               CAL-ER (PER13) 2024:091:06:51:36.987   0.9   --    --  191.4919   3.0470 167.29 172.54  80.61   
 ----      43560               CAL-ER (PER14) 2024:091:07:48:29.328   0.9   --    --  327.7207  49.9447  52.26  57.84 115.60   
705105     28296    1    SDSS J125142.28+2404 2024:091:09:01:32.171  11.5 ACIS-S NONE 192.9563  24.0841 173.69 151.51  96.17 dss pspc rass
704654     29345    0               4C +62.29 2024:091:12:42:45.972  12.2 ACIS-S NONE 266.5907  62.4246  99.97  92.36  63.29 dss pspc rass
705105     29349    1    SDSS J125142.28+2404 2024:091:16:36:06.898  11.5 ACIS-S NONE 192.9552  24.0841 174.34 151.43  63.44 dss pspc rass
601596 P1  28102    0                 UGC4305 2024:091:20:16:59.390   9.5 ACIS-I NONE 124.7578  70.7408 245.51  93.61  61.69 dss pspc rass
601587     29348    0                 NGC4261 2024:091:23:39:20.390  10.0  HRC-I NONE 184.8590   5.8429 208.82 168.23  75.45 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 03/25/24



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