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.
Seq # NB ObsID Constr. Target Start Time SI Grat RA Dec Roll Pitch Slew Overlays ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- -------- -------- ------ ------ ------ ------------- 201835 CCT 30739 0 Gaia DR2 31682651966 2025:020:01:40:05.922 11.0 ACIS-S NONE 109.5102 16.5596 288.96 167.52 126.24 dss pspc rass 402494 28040 0 1eRASS J002222.5-533 2025:020:05:24:06.428 11.0 ACIS-S NONE 5.5858 -53.6260 260.89 58.16 113.29 dss pspc rass 601711 CCT 30738 0 SDSS J074231.56+1633 2025:020:09:08:44.292 11.0 ACIS-I NONE 115.6143 16.5674 300.05 172.62 116.09 dss pspc rass 402494 30740 0 1eRASS J002222.5-533 2025:020:12:53:21.704 11.0 ACIS-S NONE 5.5850 -53.6240 260.55 58.02 116.06 dss pspc rass 201582 28497 2 Orion Nebula Cluster 2025:020:16:29:41.582 16.0 ACIS-I NONE 83.8010 -5.3839 304.80 134.05 78.74 dss pspc rass 503481 28515 1 PS15bva KISS15s 2025:020:21:21:38.582 14.9 ACIS-S NONE 47.1106 -0.8213 306.00 103.01 37.05 dss pspc rass ---- 42758 CAL-ER (PER01) 2025:021:02:01:13.256 3.0 -- -- 115.7800 20.2400 269.01 173.08 73.72 ---- 42757 CAL-ER (PER02) 2025:021:06:40:00.000 3.0 -- -- 30.0000 42.0000 287.15 100.79 80.01 ---- 42756 CAL-ER (PER03) 2025:021:08:20:00.000 0.9 -- -- 30.0000 42.0000 287.18 100.72 0.03 ---- 42755 CAL-ER (PER04) 2025:021:09:02:00.000 0.9 -- -- 30.0000 42.0000 287.20 100.69 0.02 ---- 42754 CAL-ER (PER05) 2025:021:09:50:00.000 0.9 -- -- 8.8000 -8.5000 288.04 63.97 54.41 704981 28640 0 Abell 370 2025:021:12:09:54.048 29.0 ACIS-I NONE 39.9459 -1.5745 285.00 95.43 32.29 dss pspc rass ---- 42753 CAL-ER (IAT01) 2025:021:20:43:43.912 0.9 -- -- 105.0000 21.0000 269.55 162.17 67.49 802203 30382 0 ZwCl 0857.9+2107 2025:021:21:51:36.143 11.0 ACIS-S NONE 135.1638 20.8736 93.92 169.52 165.09 dss pspc rass 601682 29872 0 SDSS J160732.86+1612 2025:022:01:32:37.979 10.0 ACIS-S NONE 241.8962 16.2126 61.79 71.00 99.89 dss pspc rass ---- 42752 CAL-ER (IAT02) 2025:022:05:11:00.587 0.9 -- -- 48.4309 -2.5430 278.00 102.33 162.95 704981 30744 0 Abell 370 2025:022:05:42:14.035 20.0 ACIS-I NONE 39.9466 -1.5754 285.00 94.70 11.23 dss pspc rass ---- 42751 CAL-ER (IAT03) 2025:022:11:48:04.578 0.9 -- -- 115.0000 20.0000 269.62 170.92 76.54 802203 30386 0 ZwCl 0857.9+2107 2025:022:12:56:29.033 11.0 ACIS-S NONE 135.1641 20.8742 95.17 170.11 167.51 dss pspc rass 601682 30745 0 SDSS J160732.86+1612 2025:022:16:37:29.720 10.0 ACIS-S NONE 241.8962 16.2128 62.21 71.50 99.80 dss pspc rass 802203 30389 0 ZwCl 0857.9+2107 2025:022:20:01:49.541 10.0 ACIS-S NONE 135.1650 20.8732 95.84 170.39 99.74 dss pspc rass 601682 30746 0 SDSS J160732.86+1612 2025:022:23:26:09.609 11.0 ACIS-S NONE 241.8961 16.2116 62.40 71.72 99.76 dss pspc rass 802203 30384 0 ZwCl 0857.9+2107 2025:023:03:07:08.767 10.4 ACIS-S NONE 135.1660 20.8724 96.57 170.66 99.69 dss pspc rass ---- 42750 CAL-ER (IAT04) 2025:023:06:52:42.901 0.9 -- -- 115.0000 20.0000 268.78 170.13 165.31 601614 28541 0 NGC1300 2025:023:07:42:06.206 17.0 ACIS-S NONE 49.9131 -19.4172 305.00 96.34 81.92 dss pspc rass 704981 28615 0 Abell 370 2025:023:12:50:43.206 14.8 ACIS-I NONE 39.9451 -1.5737 285.00 93.45 27.20 dss pspc rass ---- 42749 CAL-ER (PER08) 2025:023:17:27:32.257 3.0 -- -- 106.3052 19.1747 273.83 161.49 68.31 ---- 42748 CAL-ER (PER09) 2025:023:18:43:26.351 3.0 -- -- 113.7750 31.1400 225.88 163.87 46.71 ---- 42747 CAL-ER (PER10) 2025:023:23:00:00.000 0.9 -- -- 30.0000 42.0000 288.46 98.38 65.74 ---- 42746 CAL-ER (CAL01) 2025:023:23:48:00.000 0.9 -- -- 30.0000 42.0000 288.47 98.35 0.02 ---- 42745 CAL-ER (PER11) 2025:024:00:30:00.000 0.9 -- -- 30.0000 42.0000 288.49 98.32 0.02 ---- 42744 CAL-ER (PER12) 2025:024:02:00:00.000 3.0 -- -- 348.2104 28.8122 314.87 62.83 36.12 705109 28657 0 Mrk 34 2025:024:04:22:42.835 23.0 ACIS-S NONE 158.5810 60.0219 136.39 133.23 91.40 dss pspc rass 705350 CCT 30736 0 SDSSJ081652.88+24161 2025:024:11:12:58.520 10.0 ACIS-S NONE 124.2428 24.2825 189.99 174.42 51.43 dss pspc rass 503558 29843 0 PSR J2021+4026 2025:024:14:40:52.606 14.5 ACIS-I NONE 305.3638 40.4359 354.01 59.62 115.81 dss pspc rass ---- 42743 CAL-ER (IAT05) 2025:024:19:07:45.058 0.9 -- -- 8.6300 58.1670 296.00 92.35 43.58 705351 CCT 30737 0 SDSSJ074840.52+15445 2025:024:20:01:52.299 15.0 ACIS-S NONE 117.1569 15.7715 276.00 169.93 103.22 dss pspc rass 503481 30742 1 PS15bva KISS15s 2025:025:00:43:37.226 17.0 ACIS-S NONE 47.1100 -0.8204 305.00 98.98 73.12 dss pspc rass 201582 30741 2 Orion Nebula Cluster 2025:025:05:52:14.226 15.0 ACIS-I NONE 83.8005 -5.3856 310.00 130.50 37.02 dss pspc rass ---- 42742 CAL-ER (IAT06) 2025:025:10:27:55.480 0.9 -- -- 48.4490 -2.5600 278.00 99.27 45.74 601614 30743 0 NGC1300 2025:025:11:01:29.520 12.5 ACIS-S NONE 49.9120 -19.4142 275.50 94.57 17.14 dss pspc rass 201706 29454 1 TW Hya 2025:025:15:09:19.983 5.0 ACIS-S NONE 165.4519 -34.7253 39.70 115.59 108.03 dss pspc rass 802203 30385 0 ZwCl 0857.9+2107 2025:025:17:07:36.266 10.0 ACIS-S NONE 135.1661 20.8748 100.00 173.00 87.47 dss pspc rass ---- 42741 CAL-ER (IAT07) 2025:025:20:30:07.929 0.9 -- -- 133.5030 -6.0890 11.80 154.50 91.62 201658 27998 2 HD 16673 2025:025:21:26:47.488 13.0 HRC-I NONE 40.0400 -9.4384 278.00 88.68 114.64 dss pspc rass 802215 P1 30033 0 SPT-CL J1221-3010 2025:026:01:48:16.920 11.4 ACIS-S NONE 185.3981 -30.1729 55.90 106.48 131.96 dss pspc rass 802203 30387 0 ZwCl 0857.9+2107 2025:026:05:33:18.585 10.3 ACIS-S NONE 135.1684 20.8770 107.66 173.42 87.87 dss pspc rass ---- 42740 CAL-ER (PER13) 2025:026:08:54:19.319 3.0 -- -- 201.7690 46.0405 88.46 114.98 62.53
Seq # NB ObsID Constr. Target Start Time SI Grat RA Dec Roll Pitch Slew Overlays ------ --- ----- ------- -------------------- --------------------- ----- ------ ---- -------- -------- ------ ------ ------ ------------- 704958 28565 0 PSO J170.8326+20.208 2025:015:06:56:55.528 30.0 ACIS-S NONE 170.8374 20.1835 78.80 129.85 34.19 dss pspc rass 705251 P1 29963 0 SDSS J131012.35+1656 2025:015:15:38:06.528 10.4 ACIS-S NONE 197.5542 16.9117 72.04 104.87 25.58 dss pspc rass ---- 42779 CAL-ER (PER08) 2025:015:19:02:40.485 3.0 -- -- 121.6465 22.0771 104.19 176.01 71.07 ---- 42778 CAL-ER (PER10) 2025:015:20:32:41.941 3.0 -- -- 115.4996 23.6283 216.84 176.77 110.36 ---- 42777 CAL-ER (PER09) 2025:016:00:58:00.000 1.1 -- -- 55.7000 49.0000 263.42 123.86 53.36 ---- 42776 CAL-ER (CAL01) 2025:016:01:19:41.000 2.4 -- -- 55.7000 49.0000 263.43 123.85 0.01 ---- 42775 CAL-ER (CAL01) 2025:016:02:08:11.000 0.9 -- -- 55.7000 49.0000 263.46 123.82 0.03 ---- 42774 CAL-ER (PER11) 2025:016:02:56:22.094 0.9 -- -- 329.7528 14.4579 317.83 47.28 76.51 ---- 42773 CAL-ER (CAL01) 2025:016:04:45:00.000 0.9 -- -- 351.0575 -34.0399 268.67 48.33 73.40 601614 28539 0 NGC1300 2025:016:05:40:51.226 25.5 ACIS-S NONE 49.9134 -19.4172 302.00 102.11 54.01 dss pspc rass ---- 42772 CAL-ER (CAL01) 2025:016:13:09:25.947 0.0 -- -- 106.7210 -21.7189 344.32 135.88 56.60 802201 30733 0 Abell 795 2025:016:13:46:08.600 11.5 ACIS-S NONE 141.0314 14.1718 69.42 157.39 93.87 dss pspc rass ---- 42771 CAL-ER (IAT02) 2025:016:17:25:53.724 0.9 -- -- 194.0393 -6.8149 67.11 100.94 56.63 705118 28846 0 Abell 370 2025:016:18:33:49.418 28.0 ACIS-I NONE 39.9481 -1.5737 277.50 100.04 165.35 dss pspc rass ---- 42770 CAL-ER (CAL01) 2025:017:02:49:53.710 0.0 -- -- 106.7210 -21.7189 343.50 135.81 82.82 601641 30155 0 NGC2775 2025:017:03:22:16.710 13.4 ACIS-S NONE 137.5928 7.0368 50.70 157.32 74.40 dss pspc rass 705265 P1 29977 0 SDSS J145138.27+0903 2025:017:07:40:58.521 13.5 ACIS-S NONE 222.9079 9.0397 69.00 80.58 89.39 dss pspc rass 601641 30731 0 NGC2775 2025:017:12:00:16.858 13.4 ACIS-S NONE 137.5928 7.0394 66.00 157.65 85.80 dss pspc rass 705211 P1 29923 0 SDSS J160158.51+4705 2025:017:16:22:03.607 13.4 ACIS-S NONE 240.4852 47.0757 53.53 86.07 103.26 dss pspc rass 201650 27990 2 HD 75332 2025:017:20:50:06.107 12.1 HRC-I NONE 132.6527 33.2794 134.46 162.96 76.89 dss pspc rass ---- 42769 CAL-ER (IAT03) 2025:018:00:35:19.528 0.0 -- -- 176.5637 17.1210 76.66 126.53 56.51 901884 P1 29910 0 IGR J15550-4306 2025:018:01:09:35.560 5.5 ACIS-I NONE 238.7841 -43.1018 93.59 55.21 82.88 dss pspc rass 601660 29665 0 NGC4781 2025:018:03:08:07.201 24.7 ACIS-S NONE 193.6081 -10.5366 66.29 101.28 51.12 dss pspc rass ---- 42768 CAL-ER (PER12) 2025:018:10:31:41.512 3.0 -- -- 124.1299 20.0331 81.40 176.40 75.25 ---- 42767 CAL-ER (CAL01) 2025:018:12:10:57.849 3.0 -- -- 115.4996 23.6283 236.51 174.49 151.98 ---- 42766 CAL-ER (PER13) 2025:018:16:30:00.000 0.9 -- -- 38.4000 40.8000 281.06 108.95 65.40 ---- 42765 CAL-ER (CAL01) 2025:018:16:49:41.000 2.4 -- -- 38.4000 40.8000 281.07 108.93 0.01 ---- 42764 CAL-ER (CAL01) 2025:018:17:38:11.000 0.9 -- -- 38.4000 40.8000 281.09 108.90 0.02 ---- 42763 CAL-ER (CAL01) 2025:018:18:23:54.414 2.0 -- -- 115.4996 23.6283 237.54 174.23 65.43 ---- 42762 CAL-ER (CAL01) 2025:018:19:40:56.608 0.9 -- -- 331.5000 16.5000 319.64 47.71 126.91 704981 28592 0 Abell 370 2025:018:22:50:28.364 35.0 ACIS-I NONE 39.9474 -1.5727 277.50 97.92 75.95 dss pspc rass ---- 42761 CAL-ER (CAL01) 2025:019:09:26:02.972 0.9 -- -- 194.0393 -6.8149 67.07 103.66 165.35 802203 30021 0 ZwCl 0857.9+2107 2025:019:10:11:48.050 11.4 ACIS-S NONE 135.1621 20.8733 89.89 167.12 65.56 dss pspc rass ---- 42760 CAL-ER (CAL01) 2025:019:13:51:52.145 0.9 -- -- 194.0393 -6.8149 67.07 103.84 65.56 704981 28618 0 Abell 370 2025:019:14:59:47.713 20.0 ACIS-I NONE 39.9484 -1.5742 277.50 97.25 165.34 dss pspc rass ---- 42759 CAL-ER (CAL01) 2025:019:21:25:28.634 0.9 -- -- 192.4709 -5.8806 66.95 105.96 165.82 601641 30732 0 NGC2775 2025:019:22:09:52.753 10.0 ACIS-S NONE 137.5927 7.0363 47.40 159.88 59.48 dss pspc rass
Previous weeks' short-term schedules.
Last modified: 01/17/25
