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 ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ ------------- ---- 41026 CAL-ER (PER01) 2026:298:17:20:30.498 3.0 -- -- 159.8300 -11.8200 84.13 48.75 121.54 ---- 41025 CAL-ER (PER02) 2026:298:21:33:00.000 3.0 -- -- 82.2000 -39.9000 54.78 108.86 73.65 ---- 41024 CAL-ER (PER03) 2026:299:00:00:00.000 3.0 -- -- 16.2000 -55.5000 345.47 111.27 48.28 ---- 41023 CAL-ER (PER04) 2026:299:01:58:00.000 1.0 -- -- 32.3000 8.1000 27.01 175.30 72.43 ---- 41022 CAL-ER (PER05) 2026:299:02:53:26.670 1.0 -- -- 16.1463 8.7865 285.52 165.79 104.75 503644 31609 0 Kes 73 2026:299:04:04:06.681 15.0 ACIS-S NONE S2,S3 280.3333 -4.9364 273.50 69.55 97.52 dss pspc rass 705439 P1 31292 0 2MASX J01190583+1604 2026:299:08:51:57.030 10.0 ACIS-S NONE S2,S3 19.7743 16.0820 255.00 169.07 100.53 dss pspc rass 503644 33530 0 Kes 73 2026:299:12:16:31.585 15.0 ACIS-S NONE S2,S3 280.3333 -4.9364 279.00 69.25 100.84 dss pspc rass 705402 31677 0 SDSS J014837.63+0600 2026:299:17:07:05.891 10.0 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 320.00 172.59 112.82 dss pspc rass 402604 31074 0 4U 1626-67 2026:299:20:38:09.891 14.5 HRC-I HETG 248.0700 -67.4609 218.03 60.06 113.49 dss pspc rass 705386 31660 0 BOSS0210W 2026:300:01:20:18.068 12.0 ACIS-I NONE I0,I1,I2,I3 32.7500 0.7800 20.00 168.00 112.36 dss pspc rass ---- 41021 CAL-ER (IAT01) 2026:300:05:11:30.497 0.0 -- -- 105.6000 1.3000 77.18 105.47 90.93 601723 31224 0 PLCK G165.7+67.0 2026:300:05:43:34.132 12.5 ACIS-I NONE I0,I1,I2,I3 171.8125 42.4715 34.01 65.93 72.95 dss pspc rass ---- 41020 CAL-ER (CAL01) 2026:300:09:39:06.614 0.0 -- -- 105.6000 1.3000 77.11 105.64 72.94 705386 33531 0 BOSS0210W 2026:300:10:15:09.534 10.0 ACIS-I NONE I0,I1,I2,I3 32.7500 0.7800 20.00 167.92 90.89 dss pspc rass ---- 41019 CAL-ER (CAL01) 2026:300:13:33:01.018 0.0 -- -- 105.6000 1.3000 77.06 105.78 90.86 601723 33526 0 PLCK G165.7+67.0 2026:300:14:05:04.371 12.2 ACIS-I NONE I0,I1,I2,I3 171.8125 42.4715 34.01 66.19 72.93 dss pspc rass 601764 CCT 33524 0 UGC 03273 2026:300:17:57:19.981 10.0 ACIS-I NONE I0,I1,I2,I3 79.4350 53.5513 114.97 124.63 58.55 dss pspc rass 402629 31099 1 NGC 300 X-1 2026:300:21:36:17.426 28.7 ACIS-S NONE I2,I3,S2,S3,S4 13.7916 -37.7034 333.98 126.63 165.56 dss pspc rass ---- 41018 CAL-ER (PER06) 2026:301:06:05:55.713 3.0 -- -- 238.9000 -65.8000 212.00 55.80 70.87 ---- 41017 CAL-ER (PER07) 2026:301:07:36:51.622 3.0 -- -- 29.9700 3.5000 346.95 170.21 114.44 ---- 41016 CAL-ER (PER08) 2026:301:11:00:00.000 3.0 -- -- 233.2000 -68.9000 204.27 57.40 112.81 ---- 41015 CAL-ER (PER09) 2026:301:13:20:00.000 3.0 -- -- 62.3012 -24.9226 40.78 132.13 86.06 ---- 41014 CAL-ER (PER15) 2026:301:14:41:16.566 1.0 -- -- 70.6346 21.1067 96.11 142.83 70.99 ---- 41013 CAL-ER (CAL01) 2026:301:15:28:44.019 1.0 -- -- 64.2526 -24.2146 43.06 131.50 68.81 ---- 41012 CAL-ER (PER10) 2026:301:16:19:06.569 3.0 -- -- 161.4000 -34.7000 101.91 50.88 81.94 ---- 41011 CAL-ER (PER11) 2026:301:18:19:39.531 1.0 -- -- 38.1700 11.0500 67.63 174.24 123.71 503700 31428 0 PSR B0833-45 2026:301:19:56:57.847 17.2 ACIS-S NONE I2,I3,S2,S3,S4 128.8361 -45.1764 76.51 76.41 101.27 dss pspc rass ---- 41010 CAL-ER (IAT02) 2026:302:01:07:52.007 0.0 -- -- 42.2300 -42.1300 10.89 123.91 59.56 705402 33533 0 SDSS J014837.63+0600 2026:302:01:38:33.656 10.2 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 320.00 170.70 66.80 dss pspc rass 402604 31502 0 4U 1626-67 2026:302:05:10:58.656 14.5 HRC-I HETG 248.0700 -67.4609 216.02 58.72 113.31 dss pspc rass 705386 33532 0 BOSS0210W 2026:302:09:52:52.192 11.0 ACIS-I NONE I0,I1,I2,I3 32.7500 0.7800 12.00 167.32 111.27 dss pspc rass ---- 41009 CAL-ER (IAT03) 2026:302:13:27:48.737 0.0 -- -- 105.6000 -2.5000 75.12 106.70 92.74 601723 33527 0 PLCK G165.7+67.0 2026:302:14:00:17.398 14.5 ACIS-I NONE I0,I1,I2,I3 171.8125 42.4715 40.00 67.75 74.82 dss pspc rass ---- 41008 CAL-ER (IAT04) 2026:302:18:39:30.239 0.9 -- -- 343.7000 39.7200 253.56 129.13 99.21 705402 31678 0 SDSS J014837.63+0600 2026:302:19:30:33.598 17.5 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 311.00 170.07 89.43 dss pspc rass 300590 CCT 33525 0 2MASS J17050868-4849 2026:303:01:04:35.158 13.8 ACIS-S NONE S2,S3,S4 256.2862 -48.8201 239.59 49.44 120.87 dss pspc rass 705402 33534 0 SDSS J014837.63+0600 2026:303:05:36:02.217 17.5 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 318.90 169.71 120.53 dss pspc rass 300590 CCT 33538 0 2MASS J17050868-4849 2026:303:11:09:59.191 13.8 ACIS-S NONE S2,S3,S4 256.2862 -48.8201 239.27 49.11 120.52 dss pspc rass 705402 31679 0 SDSS J014837.63+0600 2026:303:15:41:26.527 18.9 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 317.75 169.35 120.55 dss pspc rass ---- 41007 CAL-ER (PER12) 2026:303:21:38:51.150 3.0 -- -- 254.9000 -52.9000 234.49 50.29 119.31 ---- 41006 CAL-ER (PER13) 2026:304:01:51:00.000 3.0 -- -- 35.2000 7.6000 2.55 173.66 125.99 ---- 41005 CAL-ER (PER14) 2026:304:06:15:00.000 3.0 -- -- 179.4000 -53.8000 131.03 48.67 126.37 503700 33528 0 PSR B0833-45 2026:304:10:03:16.781 12.0 ACIS-S NONE I3,S2,S3,S4 128.8361 -45.1764 72.01 77.58 38.31 dss pspc rass ---- 41004 CAL-ER (IAT05) 2026:304:13:45:48.264 0.0 -- -- 59.8000 -36.0700 29.16 124.77 51.86 705409 31696 0 CHQ J0210+0050 2026:304:14:13:07.311 10.0 ACIS-I NONE I0,I1,I2,I3 32.5000 0.8400 354.00 166.37 51.60 dss pspc rass ---- 41003 CAL-ER (CAL01) 2026:304:17:22:14.208 0.0 -- -- 59.8000 -36.0700 28.99 124.77 51.52 503700 33529 0 PSR B0833-45 2026:304:17:49:33.233 19.0 ACIS-S NONE I3,S2,S3,S4 128.8361 -45.1764 76.01 77.71 51.60 dss pspc rass ---- 41002 CAL-ER (IAT06) 2026:304:23:28:41.169 0.0 -- -- 59.8000 -36.0700 28.68 124.78 51.60 705409 33536 0 CHQ J0210+0050 2026:304:23:55:28.002 17.7 ACIS-I NONE I0,I1,I2,I3 32.5000 0.8400 359.00 166.15 49.17 dss pspc rass 300589 CCT 33523 0 MASTER J1743-5530 2026:305:05:30:53.449 14.0 ACIS-S NONE S2,S3,S4 265.9255 -55.5018 243.24 56.08 112.16 dss pspc rass 705402 31685 0 SDSS J014837.63+0600 2026:305:10:04:44.478 18.0 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 313.97 167.74 112.58 dss pspc rass 300589 CCT 33537 0 MASTER J1743-5530 2026:305:15:45:15.239 13.5 ACIS-S NONE S2,S3,S4 265.9255 -55.5018 242.92 55.76 112.56 dss pspc rass 705402 33535 0 SDSS J014837.63+0600 2026:305:20:10:46.663 18.0 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 313.20 167.36 112.61 dss pspc rass
Seq # NB ObsID Constr. Target Start Time SI Grat Active Chips RA Dec Roll Pitch Slew Overlays ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- ----------------- -------- -------- ------ ------ ------ ------------- ---- 41054 CAL-ER (IAT01) 2026:292:00:24:02.806 0.0 -- -- 20.8000 -54.5000 357.17 115.65 94.23 705409 31701 0 CHQ J0210+0050 2026:292:00:55:39.488 11.0 ACIS-I NONE I0,I1,I2,I3 32.5000 0.8400 48.37 167.24 70.93 dss pspc rass 201888 31541 0 WR21a 2026:292:04:38:41.851 13.5 ACIS-S HETG S1,S2,S3,S4 156.4855 -57.8121 123.50 59.81 108.93 dss pspc rass 705409 33521 0 CHQ J0210+0050 2026:292:09:03:24.207 11.0 ACIS-I NONE I0,I1,I2,I3 32.5000 0.8400 48.37 167.37 108.93 dss pspc rass 201888 31542 0 WR21a 2026:292:12:46:27.098 13.0 ACIS-S HETG S1,S2,S3,S4 156.4855 -57.8121 123.13 59.85 108.97 dss pspc rass 705409 33522 0 CHQ J0210+0050 2026:292:17:02:49.979 11.0 ACIS-I NONE I0,I1,I2,I3 32.5000 0.8400 48.37 167.50 108.97 dss pspc rass 201888 33516 0 WR21a 2026:292:20:45:53.402 13.5 ACIS-S HETG S1,S2,S3,S4 156.4855 -57.8121 122.75 59.89 109.01 dss pspc rass ---- 41053 CAL-ER (IAT02) 2026:293:00:55:52.837 0.0 -- -- 310.0282 -59.3952 288.60 89.07 62.96 503825 DDT 33449 0 SN 2016coi 2026:293:01:30:15.626 20.5 ACIS-S NONE S2,S3 329.7672 18.1863 269.25 126.64 83.38 dss pspc rass ---- 41052 CAL-ER (PER01) 2026:293:07:38:30.389 3.0 -- -- 20.7664 10.7315 263.06 176.19 50.32 ---- 41051 CAL-ER (PER04) 2026:293:09:12:23.688 3.0 -- -- 252.2623 -0.1431 283.66 48.39 127.75 ---- 41050 CAL-ER (CAL01) 2026:293:10:46:17.062 3.0 -- -- 20.7664 10.7316 263.89 176.07 127.75 ---- 41049 CAL-ER (PER03) 2026:293:12:24:04.866 3.0 -- -- 28.4685 12.1772 117.10 175.95 145.34 ---- 41048 CAL-ER (PER02) 2026:293:15:00:00.000 3.0 -- -- 78.9153 45.7499 109.96 122.15 57.37 ---- 41047 CAL-ER (PER05) 2026:293:18:00:00.000 3.0 -- -- 206.0969 38.1960 358.63 48.61 83.69 201854 31525 0 V444 Cyg 2026:293:20:51:12.706 30.0 ACIS-S HETG S1,S2,S3,S4 304.8851 38.7317 272.23 104.06 74.15 dss pspc rass ---- 41046 CAL-ER (IAT03) 2026:294:05:38:28.260 0.0 -- -- 355.2595 -3.1137 294.92 146.93 73.17 705402 31255 0 SDSS J014837.63+0600 2026:294:06:13:30.313 10.0 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 15.00 175.10 86.33 dss pspc rass ---- 41045 CAL-ER (IAT04) 2026:294:09:20:50.151 0.0 -- -- 15.1509 -16.5517 338.45 150.87 43.39 901895 31466 0 CMZ Molecular Cloud 2026:294:09:58:34.394 15.0 ACIS-I NONE I0,I1,I2,I3 266.5505 -28.8887 265.43 59.46 98.49 dss pspc rass ---- 41044 CAL-ER (CAL01) 2026:294:14:41:27.120 0.0 -- -- 15.1509 -16.5517 338.13 150.73 98.45 705402 31676 0 SDSS J014837.63+0600 2026:294:15:07:00.970 10.0 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 14.96 175.07 43.61 dss pspc rass ---- 41043 CAL-ER (CAL01) 2026:294:18:14:26.142 0.0 -- -- 15.1509 -16.5517 337.92 150.63 43.78 901895 33514 0 CMZ Molecular Cloud 2026:294:18:52:09.604 15.0 ACIS-I NONE I0,I1,I2,I3 266.5505 -28.8887 265.39 59.10 98.43 dss pspc rass ---- 41042 CAL-ER (CAL01) 2026:294:23:35:01.558 0.0 -- -- 15.1509 -16.5517 337.60 150.48 98.40 705402 31691 0 SDSS J014837.63+0600 2026:295:00:00:41.695 10.0 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 15.00 175.02 44.08 dss pspc rass ---- 41041 CAL-ER (CAL01) 2026:295:03:08:13.177 0.0 -- -- 15.1509 -16.5517 337.38 150.39 44.25 901895 33515 0 CMZ Molecular Cloud 2026:295:03:45:55.886 12.0 ACIS-I NONE I0,I1,I2,I3 266.5505 -28.8887 265.34 58.74 98.38 dss pspc rass ---- 41040 CAL-ER (CAL01) 2026:295:07:38:47.174 0.0 -- -- 15.1509 -16.5517 337.11 150.27 98.35 705402 33519 0 SDSS J014837.63+0600 2026:295:08:04:32.647 10.0 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 15.00 174.95 44.47 dss pspc rass 201888 33517 0 WR21a 2026:295:11:32:21.023 16.5 ACIS-S HETG S1,S2,S3,S4 156.4855 -57.8121 119.77 60.18 115.38 dss pspc rass 705402 33520 0 SDSS J014837.63+0600 2026:295:16:48:29.395 20.4 ACIS-I NONE I0,I1,I2,I3 27.1568 6.0056 15.00 174.87 115.38 dss pspc rass ---- 41039 CAL-ER (PER07) 2026:295:23:12:22.808 3.0 -- -- 172.4316 -49.3395 131.02 47.71 127.92 ---- 41038 CAL-ER (PER09) 2026:296:00:37:52.294 3.0 -- -- 254.7126 -29.6744 257.62 47.81 89.96 ---- 41037 CAL-ER (PER08) 2026:296:05:30:00.000 3.0 -- -- 338.7677 -18.2777 297.86 123.67 76.07 ---- 41036 CAL-ER (PER10) 2026:296:09:00:00.000 0.9 -- -- 69.5264 56.9003 127.49 124.24 147.33 ---- 41035 CAL-ER (PER12) 2026:296:09:39:17.032 0.9 -- -- 142.9966 59.6273 62.41 87.53 36.75 ---- 41034 CAL-ER (PER11) 2026:296:11:10:00.000 0.9 -- -- 28.1168 13.7300 168.35 177.60 91.09 503827 DDT 33478 3 SN2026sqf 2026:296:12:13:47.411 10.0 ACIS-S NONE S2,S3 159.6998 53.5095 48.47 76.60 101.88 dss pspc rass ---- 41033 CAL-ER (IAT05) 2026:296:15:28:28.390 0.0 -- -- 78.2824 12.2176 85.31 130.64 76.57 705385 31238 0 BOSS0210E 2026:296:16:02:26.023 19.0 ACIS-I NONE I0,I1,I2,I3 32.2000 1.0000 22.37 168.65 81.50 dss pspc rass ---- 41032 CAL-ER (CAL01) 2026:296:22:01:17.010 0.9 -- -- 167.9000 -47.2000 123.22 49.01 120.07 705383 31650 0 [ZCA2021] BOSS1244 N 2026:296:23:00:36.533 14.0 ACIS-I NONE I0,I1,I2,I3 191.0800 36.0800 21.88 50.26 126.64 dss pspc rass ---- 41031 CAL-ER (CAL01) 2026:297:03:36:44.400 0.9 -- -- 30.7000 18.0000 159.21 173.21 122.84 705385 33512 0 BOSS0210E 2026:297:04:38:57.501 15.0 ACIS-I NONE I0,I1,I2,I3 32.2000 1.0000 19.77 168.64 139.66 dss pspc rass ---- 41030 CAL-ER (CAL01) 2026:297:09:31:09.663 0.9 -- -- 167.9000 -47.2000 122.62 49.12 120.16 705383 33518 0 [ZCA2021] BOSS1244 N 2026:297:10:30:20.058 14.0 ACIS-I NONE I0,I1,I2,I3 191.0800 36.0800 22.34 50.56 125.95 dss pspc rass ---- 41029 CAL-ER (CAL01) 2026:297:15:06:27.913 0.9 -- -- 30.7000 18.0000 162.30 173.51 122.84 705385 33513 0 BOSS0210E 2026:297:16:09:52.841 14.0 ACIS-I NONE I0,I1,I2,I3 32.2000 1.0000 17.41 168.63 145.04 dss pspc rass ---- 41028 CAL-ER (IAT06) 2026:297:20:27:57.162 0.0 -- -- 76.2284 -11.9672 64.78 127.31 61.82 503612 P1 31134 0 1eRASS J101111.1+083 2026:297:21:01:19.727 15.0 ACIS-S NONE I2,I3,S2,S3,S4 152.7954 8.5577 70.70 59.41 78.87 dss pspc rass 202003 CCT 33511 0 Gaia DR2 76117304500 2026:298:01:51:49.783 10.3 ACIS-S NONE S2,S3 36.6401 15.3735 113.92 171.91 112.50 dss pspc rass 705426 P1 31279 0 SDSS J100207.03+1630 2026:298:05:22:52.896 17.0 ACIS-S NONE S1,S2,S3,S4 150.5292 16.5135 63.00 64.66 107.48 dss pspc rass 705695 CCT 33510 0 QSOB0229+200 2026:298:10:45:07.651 10.7 ACIS-S NONE S2,S3 38.2025 20.2881 132.97 168.25 105.36 dss pspc rass ---- 41027 CAL-ER (PER13) 2026:298:14:08:00.996 3.0 -- -- 39.9165 12.7789 92.70 169.91 40.49
Previous weeks' short-term schedules.
Last modified: 10/23/26
