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.
Seq # NB ObsID Constr. Target Start Time SI Grat Active Chips RA Dec Roll Pitch Slew Overlays ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ ------------- 705227 30190 0 NGC5728 2026:019:01:25:40.462 10.3 ACIS-S NONE S2,S3 220.5995 -17.2531 61.25 75.11 79.56 dss pspc rass 802201 30377 0 Abell 795 2026:019:04:51:44.854 10.0 ACIS-S NONE S2,S3 141.0221 14.1726 69.08 159.80 85.08 dss pspc rass 705227 32115 0 NGC5728 2026:019:08:12:48.916 12.0 ACIS-S NONE S2,S3 220.5995 -17.2531 61.50 75.40 85.05 dss pspc rass 601658 30177 0 NGC4694 2026:019:11:58:05.916 28.5 ACIS-S NONE I3,S2,S3,S4 192.0629 10.9835 67.00 111.60 40.52 dss pspc rass 802201 32117 0 Abell 795 2026:019:20:19:07.596 10.0 ACIS-S NONE I3,S1,S2,S3 141.0221 14.1726 86.00 160.46 50.30 dss pspc rass 503548 TOO 29833 2 SN2025sei 2026:019:23:46:53.541 12.2 ACIS-S NONE S2,S3 267.2476 25.4958 36.01 56.73 115.20 dss pspc rass 802201 32118 0 Abell 795 2026:020:03:51:19.487 10.0 ACIS-S NONE I3,S1,S2,S3 141.0221 14.1726 86.00 160.78 115.20 dss pspc rass ---- 41778 CAL-ER (IAT03) 2026:020:07:33:23.035 0.9 -- -- 104.0741 18.9123 277.39 162.99 179.52 705386 31657 0 BOSS0210W 2026:020:08:20:35.725 28.0 ACIS-I NONE I0,I1,I2,I3 32.7500 0.7800 293.00 90.86 72.13 dss pspc rass 503562 TOO 29847 2 GRB260114A 2026:020:16:32:20.725 25.0 ACIS-S NONE I3,S1,S2,S3 74.5979 -8.0144 296.00 125.15 42.63 dss pspc rass ---- 41777 CAL-ER (PER01) 2026:020:23:52:03.033 3.0 -- -- 103.8000 8.4000 304.40 158.26 34.45 ---- 41776 CAL-ER (PER02) 2026:021:02:31:00.000 3.0 -- -- 143.6159 -3.2512 40.34 149.10 104.12 ---- 41775 CAL-ER (PER03) 2026:021:04:30:00.000 3.0 -- -- 221.9000 -41.0000 80.08 70.48 79.11 ---- 41774 CAL-ER (PER04) 2026:021:10:45:00.000 1.0 -- -- 129.8000 15.6000 54.15 172.42 101.75 705430 32119 0 SDSS J093401.24+2453 2026:021:11:47:50.973 10.0 ACIS-S NONE S1,S2,S3,S4 143.5051 24.8951 97.99 160.70 50.99 dss pspc rass 503548 TOO 32111 2 SN2025sei 2026:021:15:13:46.928 11.2 ACIS-S NONE S2,S3 267.2476 25.4958 39.01 57.44 106.95 dss pspc rass 601661 30180 0 NGC4941 2026:021:18:53:00.061 30.0 ACIS-S NONE I3,S2,S3,S4 196.0547 -5.5516 67.79 104.46 76.74 dss pspc rass 802203 31883 0 ZwCl 0857.9+2107 2026:022:03:43:26.621 10.0 ACIS-S NONE S1,S2,S3,S4 135.1535 20.8945 94.00 169.51 67.24 dss pspc rass 503548 TOO 32112 2 SN2025sei 2026:022:07:11:42.720 11.4 ACIS-S NONE S2,S3 267.2476 25.4958 44.50 57.77 117.46 dss pspc rass 790397 31733 3 MKN421 2026:022:10:56:27.714 15.3 ACIS-S LETG S1,S2,S3,S4,S5 166.1133 38.2088 117.98 139.50 82.87 dss pspc rass ---- 41773 CAL-ER (IAT08) 2026:022:15:56:13.962 0.9 -- -- 75.8719 15.4616 282.68 133.54 131.72 705402 31674 0 SDSS J014837.63+0600 2026:022:16:38:33.445 15.2 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 280.00 85.06 50.14 dss pspc rass ---- 41772 CAL-ER (IAT05) 2026:022:21:18:21.822 0.0 -- -- 62.4284 72.0846 249.49 117.01 69.63 790397 32121 3 MKN421 2026:022:21:49:14.258 15.1 ACIS-S LETG S1,S2,S3,S4 166.1133 38.2088 117.98 139.79 67.61 dss pspc rass ---- 41771 CAL-ER (IAT06) 2026:023:02:26:57.032 0.0 -- -- 62.4284 72.0846 249.69 116.90 67.71 705402 32120 0 SDSS J014837.63+0600 2026:023:02:58:16.301 15.1 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 280.00 84.63 69.62 dss pspc rass ---- 41770 CAL-ER (IAT10) 2026:023:07:50:26.172 0.9 -- -- 220.8095 60.6553 75.46 104.28 112.49 802203 32122 0 ZwCl 0857.9+2107 2026:023:08:39:39.438 10.0 ACIS-S NONE S1,S2,S3,S4 135.1535 20.8945 96.60 170.63 81.17 dss pspc rass 503548 TOO 32113 2 SN2025sei 2026:023:12:07:50.526 10.1 ACIS-S NONE S2,S3 267.2476 25.4958 45.00 58.30 117.08 dss pspc rass ---- 41769 CAL-ER (PER06) 2026:023:15:35:39.410 3.0 -- -- 131.9623 28.7894 146.72 168.99 110.89 ---- 41768 CAL-ER (PER07) 2026:023:19:00:00.000 3.0 -- -- 113.5769 33.3008 220.94 162.37 66.49 ---- 41767 CAL-ER (PER05) 2026:023:21:10:00.000 3.0 -- -- 41.9000 48.6000 278.74 108.35 54.54 ---- 41766 CAL-ER (PER08) 2026:024:00:40:00.000 1.0 -- -- 269.6007 29.6116 40.16 60.21 91.43 601651 30168 0 NGC4496A 2026:024:03:33:25.225 30.1 ACIS-S NONE I3,S2,S3,S4 187.9135 3.9396 62.00 117.87 81.07 dss pspc rass 601740 CCT 32110 0 UGC 05086 2026:024:12:22:03.853 10.0 ACIS-I NONE I0,I1,I2,I3 143.2034 21.4656 95.02 164.19 51.65 dss pspc rass 503548 TOO 32114 2 SN2025sei 2026:024:15:48:40.318 10.0 ACIS-S NONE S2,S3 267.2476 25.4958 45.00 58.87 109.98 dss pspc rass 503497 30107 1 PSR J1101-6101 2026:024:19:18:05.519 30.2 ACIS-I NONE I0,I1,I2,I3 165.4378 -61.0279 34.00 94.00 122.64 dss pspc rass ---- 41765 CAL-ER (IAT11) 2026:025:04:00:04.456 0.0 -- -- 165.9394 -27.2340 43.27 120.37 34.93 802203 32123 0 ZwCl 0857.9+2107 2026:025:04:33:56.338 10.0 ACIS-S NONE S1,S2,S3,S4 135.1535 20.8945 102.01 172.32 81.07 dss pspc rass 705227 32116 0 NGC5728 2026:025:07:57:48.393 10.0 ACIS-S NONE S2,S3 220.5995 -17.2531 61.25 81.50 97.65 dss pspc rass ---- 41764 CAL-ER (IAT12) 2026:025:11:31:40.492 0.9 -- -- 39.5945 -24.0540 288.25 84.17 142.66 503563 TOO 29848 2 GRB260114A 2026:025:12:11:38.492 25.0 ACIS-S NONE I2,I3,S1,S2,S3 74.5979 -8.0144 298.04 121.23 37.10 dss pspc rass
Seq # NB ObsID Constr. Target Start Time SI Grat Active Chips RA Dec Roll Pitch Slew Overlays ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ ------------- ---- 41800 CAL-ER (IAT01) 2026:012:01:29:14.144 0.9 -- -- 132.8000 10.5000 56.59 158.12 84.57 890273 31412 2 A1795 2026:012:02:18:30.282 15.3 ACIS-S NONE I2,I3,S1,S2,S3 207.2196 26.5908 71.00 96.23 81.39 dss pspc rass 802203 30395 0 ZwCl 0857.9+2107 2026:012:07:04:07.602 10.0 ACIS-S NONE S1,S2,S3 135.1535 20.8945 83.62 159.80 68.05 dss pspc rass 705227 30193 0 NGC5728 2026:012:10:26:49.982 13.0 ACIS-S NONE S2,S3 220.5995 -17.2531 70.00 68.36 92.43 dss pspc rass 802203 32105 0 ZwCl 0857.9+2107 2026:012:14:39:32.582 10.0 ACIS-S NONE S1,S2,S3,S4 135.1535 20.8945 83.82 160.11 92.45 dss pspc rass 705227 32103 0 NGC5728 2026:012:18:02:14.096 13.3 ACIS-S NONE S2,S3 220.5995 -17.2531 71.00 68.67 92.36 dss pspc rass 802203 32106 0 ZwCl 0857.9+2107 2026:012:22:19:55.835 9.9 ACIS-S NONE S1,S2,S3,S4 135.1535 20.8945 84.04 160.42 92.38 dss pspc rass ---- 41799 CAL-ER (PER01) 2026:013:01:44:00.963 3.0 -- -- 240.0000 -15.0000 74.13 51.73 108.88 ---- 41798 CAL-ER (PER02) 2026:013:03:13:42.833 3.0 -- -- 135.1535 20.8945 84.26 160.63 108.89 ---- 41797 CAL-ER (PER03) 2026:013:05:00:00.000 3.0 -- -- 239.6516 -14.9042 74.07 52.22 108.54 ---- 41796 CAL-ER (PER04) 2026:013:06:30:30.330 3.0 -- -- 342.6876 -63.1555 240.78 52.59 112.52 ---- 41795 CAL-ER (PER05) 2026:013:07:49:25.624 3.0 -- -- 86.0881 -40.0496 331.20 112.96 60.40 ---- 41794 CAL-ER (PER06) 2026:013:10:20:00.000 0.9 -- -- 97.7581 20.0772 278.13 164.11 80.64 201810 30090 0 TV Cassiopeia 2026:013:12:42:56.653 37.0 ACIS-S HETG S0,S1,S2,S3,S4,S5 4.8281 59.1390 297.82 98.70 88.15 dss pspc rass 705523 CCT 32098 0 B2.1 0719+32C 2026:013:23:30:43.890 16.0 ACIS-S NONE S2,S3,S4 110.7897 32.6480 200.70 168.09 70.29 dss pspc rass 901896 31515 0 Cyg X-2 2026:014:04:39:48.890 14.5 HRC-I HETG 326.1715 38.3214 328.81 66.28 101.89 dss pspc rass 790397 31398 3 MKN421 2026:014:09:19:50.181 15.0 ACIS-S LETG S1,S2,S3,S4,S5 166.1133 38.2088 96.39 133.80 102.85 dss pspc rass 705274 29986 0 NGC 5506 2026:014:13:59:32.535 16.2 ACIS-S HETG S3 213.3120 -3.2077 57.50 81.98 63.93 dss pspc rass 601641 30156 0 NGC2775 2026:014:19:02:17.699 11.0 ACIS-S NONE I2,I3,S2,S3,S4 137.5838 7.0380 53.21 154.87 76.55 dss pspc rass 790395 31396 2 3C273 2026:014:22:32:55.876 28.0 ACIS-S HETG S1,S2,S3,S4,S5 187.2779 2.0524 68.22 108.48 53.11 dss pspc rass 705447 P1 31300 0 SDSS J081800.19+1918 2026:015:06:49:20.041 10.0 ACIS-S NONE S2,S3 124.5008 19.3028 73.93 172.43 64.06 dss pspc rass 705521 CCT 32096 0 SDSSJ161649.37-00425 2026:015:10:18:02.240 10.0 ACIS-S NONE S2,S3 244.2057 -0.7140 64.48 55.22 119.42 dss pspc rass 705447 32107 0 SDSS J081800.19+1918 2026:015:13:46:44.479 9.9 ACIS-S NONE S2,S3 124.5008 19.3028 73.90 172.72 119.42 dss pspc rass ---- 41793 CAL-ER (PER07) 2026:015:17:10:27.989 3.0 -- -- 115.7181 18.1037 336.05 176.71 100.93 ---- 41792 CAL-ER (PER08) 2026:015:19:30:00.000 3.0 -- -- 341.5901 -57.1321 240.74 48.37 128.39 ---- 41791 CAL-ER (PER09) 2026:015:21:55:00.000 3.0 -- -- 115.7181 18.1037 332.68 176.67 128.34 ---- 41790 CAL-ER (PER10) 2026:015:23:16:46.963 3.0 -- -- 75.4066 -45.3795 320.05 103.39 73.27 ---- 41789 CAL-ER (PER11) 2026:016:02:00:00.000 0.9 -- -- 348.8445 -13.9225 285.93 49.24 79.40 ---- 41788 CAL-ER (PER12) 2026:016:03:04:44.753 0.9 -- -- 255.8770 6.6120 54.90 49.40 151.03 890272 31411 2 A1795 2026:016:04:51:30.666 20.0 ACIS-I NONE I0,I1,I2,I3,S2 207.2196 26.5908 71.22 99.62 50.34 dss pspc rass 601641 32101 0 NGC2775 2026:016:10:57:59.610 11.0 ACIS-S NONE I2,I3,S2,S3,S4 137.5838 7.0380 51.69 156.44 79.42 dss pspc rass 705227 32104 0 NGC5728 2026:016:14:35:54.373 10.0 ACIS-S NONE S2,S3 220.5995 -17.2531 70.00 72.62 85.86 dss pspc rass 802207 30421 0 Abell 2255 2026:016:17:57:39.349 38.0 ACIS-I NONE I0,I1,I2,I3 258.2085 64.0529 30.01 90.49 88.12 dss pspc rass ---- 41787 CAL-ER (IAT02) 2026:017:04:56:01.802 0.0 -- -- 169.9697 30.8334 89.56 133.26 63.18 601641 32102 0 NGC2775 2026:017:05:25:40.804 10.0 ACIS-S NONE I3,S2,S3,S4 137.5838 7.0380 50.88 157.16 62.10 dss pspc rass 402596 30504 1 Vela X-1 2026:017:08:40:35.185 15.0 ACIS-S HETG S1,S2,S3,S4,S5 135.5286 -40.5547 17.36 116.70 57.33 dss pspc rass 705522 CCT 32097 0 SDSSJ080755.62+05563 2026:017:13:17:27.771 10.0 ACIS-S NONE S2,S3 121.9818 5.9439 355.00 164.90 51.19 dss pspc rass 705299 30011 0 GAMA2258819 2026:017:16:44:22.311 19.0 ACIS-S NONE S2,S3 30.8741 -9.4915 280.00 88.11 111.34 dss pspc rass 705524 CCT 32099 0 SDSSJ081010.69+07333 2026:017:22:41:48.443 10.0 ACIS-S NONE S2,S3 122.5445 7.5603 357.00 166.55 113.71 dss pspc rass ---- 41786 CAL-ER (IAT03) 2026:018:01:56:05.727 0.0 -- -- 169.8510 -13.8255 55.93 119.85 74.80 705274 32100 0 NGC 5506 2026:018:02:21:49.876 20.3 ACIS-S HETG S3 213.3120 -3.2077 67.00 85.49 44.38 dss pspc rass ---- 41785 CAL-ER (PER13) 2026:018:08:36:33.993 3.0 -- -- 123.5325 20.9826 96.02 176.66 91.48 ---- 41784 CAL-ER (PER14) 2026:018:10:14:34.850 3.0 -- -- 116.0494 22.3688 245.04 175.87 146.31 ---- 41783 CAL-ER (PER15) 2026:018:11:48:22.697 3.0 -- -- 343.0235 3.5152 301.63 48.47 127.34 ---- 41782 CAL-ER (PER16) 2026:018:14:15:00.000 3.0 -- -- 35.4000 41.8000 282.40 107.26 60.41 ---- 41781 CAL-ER (PER17) 2026:018:17:30:00.000 0.9 -- -- 116.0494 22.3687 246.04 175.56 69.59 ---- 41780 CAL-ER (PER18) 2026:018:18:29:28.797 0.9 -- -- 343.0235 3.5152 301.73 48.19 127.33 ---- 41779 CAL-ER (PER19) 2026:018:19:29:06.547 0.9 -- -- 255.8770 6.6120 57.14 51.52 128.01 790397 32108 3 MKN421 2026:018:20:42:29.632 15.0 ACIS-S LETG S1,S2,S3,S4,S5 166.1133 38.2088 100.96 137.02 85.72 dss pspc rass
Previous weeks' short-term schedules.
Last modified: 01/16/26
