About Chandra Archive Proposer Instruments & Calibration Newsletters Data Analysis HelpDesk Calibration Database NASA Archives & Centers Chandra Science Links


Long-term Schedule

This is the latest long-term schedule. Observations have been sorted into one-week intervals, taking into account solar, time, roll, and other constraints. It is our intent to follow this schedule. However, targets which are not constrained may well be moved forward or back in time to fill requirements of the short-term schedules. Targets of opportunity and any instrument or spacecraft anomalies may also cause observing times of targets to shift. This long-term schedule is our present estimate of future order of observations. Please be aware of the uncertainties.

Also notice that targets have been allotted to one-week intervals to fill only about half of real-time. This figure is significantly less than Chandra's available observing time. To achieve fully scheduled weeks, and to increase Chandra's efficiency we must allow the short-term scheduler some flexibility in target choice. This is done by reserving a pool of unconstrained targets with broad viewing windows, These targets are listed at the end of the long-term schedule, and may be scheduled at any time during the cycle to fill undersubscribed weeks.

The long-term schedule page has links to our database entries of the requested observing parameters as well as to images of the target fields of view. Observers are encouraged to review these entries and notify the Chandra Director's Office of any perceived problems. Observers may be contacted about a month prior to the detailed scheduling of their targets for final confirmation of the observing parameters. Note that the images accompanying the target pages assume a roll angle appropriate for the middle of the week to which the target has been assigned in the long-term schedule. This approximation, made for initial review purposes only, may not always respect accepted roll constraints. This will be corrected in the final scheduling process, which may also result in different guide stars than those shown in the optical image. Also, those targets allocated to the pool may be moved multiple times; the roll angles for their images are thus unlikely to correspond to the final orientation. Updates will be issued at the time of rescheduling.

If simultaneous observations with other instruments are a vital part of your program and if they were part of your peer-reviewed proposal, a time-constraint should be already applied to your target. Barring malfunctions, it will be honored. After a proposal has been reviewed and accepted, the addition of constraints, or changes in object, position or exposure time will not be honored. If you have added coordinated observations later or if only a secondary part of the science, we cannot perturb the normal scheduling to give you a definite time.

NOTE: In the text of the long-term schedule, pool targets are marked with a "P", Cool Catalog Targets (CCTs) are marked with "C", and roll and pitch angles given are for the start and end of each observation's assigned one-week interval.

Chandra X-ray Observatory Long-term Schedule

Click here for a list of changes from the last LTS.

Click here for table header definitions.

Segment: 22 limit: 7.00d, used 4.82d = 68.86% 13-Jul-2020 00h to 20-Jul-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201285  H 22990 Westerlund 1 25.0 251.758 -45.861 291.9 286.4 139.0 133.5 ACIS-I 4 0 NONE Drake GO 21 0 N N N N N N jdrake 07/07/20 21200267 300463 22954 V1223 Sgr 35.0 283.760 -31.164 317.5 302.6 167.7 162.2 ACIS-S 6 2 HETG Hayashi GO 21 0 N N N N N N nss 06/08/20 21300359 300463 23318 V1223 Sgr 15.0 283.760 -31.164 317.5 302.6 167.7 162.2 ACIS-S 6 2 HETG Hayashi GO 21 0 N N N N N N split of 22954 21300359 503130 23312 G1.9+0.3 44.0 267.188 -27.167 277.5 275.4 156.2 149.6 ACIS-S 4 2 NONE Reynolds GO 20 0 N N N N N N jeanconn 06/30/20 20500542 503130 23313 G1.9+0.3 30.0 267.188 -27.167 277.5 275.4 156.2 149.6 ACIS-S 4 2 NONE Reynolds GO 20 0 N N N N N N jeanconn 06/26/20 20500542 503131 21361 N132D 31.0 81.259 -69.642 150.9 144.2 94.1 94.3 ACIS-S 5 4 NONE Plucinsky GO 20 1 N N N N N N plucinsk 02/28/19 20500554 503131 23317 N132D 44.0 81.259 -69.642 150.9 144.2 94.1 94.3 ACIS-S 5 4 NONE Plucinsky GO 20 0 N N N N N N split of 21361 20500554 590587 23257 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590588 23258 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590589 23259 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590590 23260 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590591 23261 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590592 23262 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590593 23263 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590594 23264 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 590595 23265 Cas A 2.0 350.858 58.815 127.8 133.2 86.4 90.2 ACIS-I 2 0 NONE Bogdan CAL 22 0 G N N N N Y abogdan 06/01/20 22500626 601440 21643 GLIMPSE-C01 30.0 282.207 -1.497 206.0 220.7 157.3 154.4 ACIS-I 5 1 NONE Rangelov GO 20 0 S N N N N N lduque 06/23/20 20620491 601457 22480 IC342 NW 44.9 56.576 68.143 66.1 72.6 57.5 61.1 ACIS-I 6 2 NONE Sell GO 21 1 N N N N N N lduque 05/18/20 21620200 801839 21560 H1821+643 36.0 275.488 64.343 196.0 202.7 92.9 93.0 ACIS-S 1 0 NONE Russell GO 20 0 N N N N N N zhao 05/15/19 20800481 801839 23239 H1821+643 43.0 275.488 64.343 196.0 202.7 92.9 93.0 ACIS-S 1 0 NONE Russell GO 20 1 N N N N N N zhao 07/07/20 20800481 801839 23319 H1821+643 22.0 275.488 64.343 196.0 202.7 92.9 93.0 ACIS-S 1 0 NONE Russell GO 20 0 N N N N N N split of 21560 20800481 Segment: 23 limit: 7.00d, used 4.49d = 64.14% 20-Jul-2020 00h to 27-Jul-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201329 22692 Brey 84 125.0 84.675 -69.095 147.4 140.7 93.2 93.2 ACIS-S 6 2 HETG Principe GTO 21 0 Y N N N N P nss 12/09/19 21200621 300463 22419 V1223 Sgr 50.0 283.760 -31.164 302.6 294.7 162.2 156.1 ACIS-S 6 2 HETG Hayashi GO 21 0 N N N N N N nss 06/15/20 21300359 300463 22955 V1223 Sgr 99.0 283.760 -31.164 302.6 294.7 162.2 156.1 ACIS-S 6 2 HETG Hayashi GO 21 0 N N N N N N nss 06/15/20 21300359 402178 22414 gx 5-1 20.0 270.291 -25.079 273.4 272.5 152.5 145.9 ACIS-S 2 0 HETG Nowak GO 21 0 S N N N Y Y nss 12/09/19 21400565 503207 23316 SN2012au 20.0 193.717 -10.247 246.5 245.9 78.9 72.3 ACIS-S 1 0 NONE MARGUTTI DDT 21 0 R N N N N N lduque 07/01/20 21508741 703777 22922 Spiderweb 18.7 175.201 -26.486 234.4 231.0 71.4 65.6 ACIS-S 4 0 NONE Tozzi GO 20 1 N N N N N N malgosia 01/16/20 20700463 704022 22712 SDSS J1139+4600 4.4 174.956 46.004 280.3 287.6 51.4 47.7 ACIS-S 3 2 NONE Brandt GTO 21 0 N N N N N N malgosia 11/25/19 21700600 801869  H 22636 RBS 797 50.0 146.803 76.387 329.7 337.5 57.5 58.1 ACIS-S 4 1 NONE Gitti GO 21 0 N N N N N N zhao 10/07/19 21800206 Segment: 24 limit: 7.00d, used 4.56d = 65.14% 27-Jul-2020 00h to 03-Aug-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201217 21161 EPIC 201237257 30.0 173.320 -3.402 241.9 240.7 51.1 44.4 ACIS-S 6 5 NONE Stelzer GO 20 0 N N N N N N swolk 10/31/18 20200156 300463 22420 V1223 Sgr 50.0 283.760 -31.164 294.7 290.0 156.1 149.7 ACIS-S 6 2 HETG Hayashi GO 21 0 N N N N N N nss 06/29/20 21300359 503157 22991 G32.4+0.1 50.0 282.561 -0.437 230.2 239.2 149.8 145.1 ACIS-I 5 1 NONE Reynolds GO 21 0 N N N N N P jeanconn 06/11/20 21500120 503157 22992 G32.4+0.1 50.0 282.561 -0.437 230.2 239.2 149.8 145.1 ACIS-I 5 1 NONE Reynolds GO 21 0 N N N N N P jeanconn 06/11/20 21500120 601437 22971 M12 53.0 251.809 -1.949 248.2 251.3 123.7 117.5 ACIS-S 4 1 NONE Cool GO 20 0 N N N N N N lduque 06/01/20 20620676 601441 21644 GLIMPSE-C01 30.0 282.207 -1.497 232.0 240.7 150.2 145.4 ACIS-I 5 1 NONE Rangelov GO 21 0 S N N N N N lduque 07/07/20 20620491 601442 21645 GLIMPSE-C01 30.0 282.207 -1.497 232.0 240.7 150.2 145.4 ACIS-I 5 1 NONE Rangelov GO 21 0 S N N N N N lduque 07/07/20 20620491 703989 22966 IC 750 50.0 179.718 42.722 280.8 288.3 50.2 46.5 ACIS-S 1 0 NONE Zaw GO 21 0 N N N N N N malgosia 06/24/20 21700389 801865 21719 1E0657-558 50.0 104.575 -55.942 158.6 151.8 77.4 77.3 ACIS-I 4 0 NONE Garmire GTO 20 0 N N N N N N zhao 09/27/18 20801027 Segment: 25 limit: 7.00d, used 4.11d = 58.71% 03-Aug-2020 00h to 10-Aug-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402137 22372 NGC4214 X-1 60.0 183.909 36.323 279.2 286.5 48.1 44.0 ACIS-S 3 0 NONE Soria GO 21 0 N N N P N N swolk 11/18/19 21400201 703777 22905 Spiderweb 54.0 175.201 -26.486 227.3 223.1 59.7 54.0 ACIS-S 4 0 NONE Tozzi GO 20 0 N N N N N N malgosia 01/16/20 20700463 704004 22619 TXS 2116-077 30.0 319.721 -7.541 149.0 183.2 168.4 172.1 ACIS-S 5 2 NONE Paliya GO 21 0 N N N P N N not approved 21700462 801839 22104 H1821+643 41.0 275.488 64.343 216.1 222.8 93.2 93.2 ACIS-S 1 0 NONE Russell GO 20 1 N N N N N N zhao 05/15/19 20800481 801865 23028 1E0657-558 50.0 104.575 -55.942 151.8 144.9 77.3 77.4 ACIS-I 4 0 NONE Garmire GTO 20 0 N N N N N N zhao 02/12/20 20801027 801887 22717 SPT-CLJ2205-2956 73.0 331.253 -29.934 56.3 37.5 159.5 162.3 ACIS-I 5 1 NONE McDonald GTO 21 0 N N N N N N zhao 10/16/19 21800602 901419 21653 JWST-DTDF-10 48.0 260.610 65.811 229.6 236.3 87.9 87.5 ACIS-I 6 2 NONE Maksym GO 20 0 N N N N N N kashyap 09/10/19 20900658 Segment: 26 limit: 4.64d, used 4.95d =106.68% 10-Aug-2020 00h to 17-Aug-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201344 23148 Betelgeuse 5.0 88.793 7.407 103.9 101.2 50.9 57.2 HRC-I - - NONE Kashyap DDT 22 0 S N N N N N kashyap 01/29/20 21208713 402107 21636 SDSS_J135225.80+1328 5.0 208.107 13.481 258.9 262.3 65.5 59.5 ACIS-S 3 0 NONE Snios GO 21 0 Y N N N N P swolk 03/06/19 20400376 402188 22694 PSR B1259-63 50.0 195.699 -63.836 232.6 227.3 89.9 85.7 ACIS-I 1 0 NONE Pavlov GTO 21 0 Y N N N N N not approved 21400610 503157 22429 G32.4+0.1 50.0 282.530 -0.400 246.1 251.6 139.9 134.3 ACIS-I 5 1 NONE Reynolds GO 21 0 N N N N N P jeanconn 06/11/20 21500120 503157 22430 G32.4+0.1 50.0 282.530 -0.400 246.1 251.6 139.9 134.3 ACIS-I 5 1 NONE Reynolds GO 21 0 N N N N N P jeanconn 06/11/20 21500120 503183 22460 AT2019wxt 35.0 28.925 31.418 114.5 116.8 99.2 105.5 ACIS-S 1 0 NONE Madsen TOO 21 0 S N N N N N kashyap 04/05/20 21510455 601443 21646 GLIMPSE-C01 30.0 282.207 -1.497 247.4 252.7 140.0 134.3 ACIS-I 5 1 NONE Rangelov GO 21 0 S N N N N N not approved 20620491 703609 20608 Q 0000-263 10.0 0.845 -26.055 82.6 75.0 140.7 145.7 ACIS-S 6 3 NONE Shemmer GO 21 0 S N N N N Y malgosia 12/18/17 19700058 703933 22545 MRC 1929-397 45.0 293.349 -39.673 308.3 302.4 146.3 140.6 ACIS-S 5 1 NONE Worrall GO 21 0 N N N N N N malgosia 02/06/20 21700095 801819 21536 Abell 2345 51.0 321.853 -12.140 154.2 255.2 176.3 175.0 ACIS-I 4 0 NONE Wik GO 20 1 N N N N N P zhao 04/09/19 20800332 801878 22930 NGC 4839 95.0 194.251 27.467 271.8 277.8 51.3 46.4 ACIS-I 4 0 NONE Walker GO 21 0 N N N N N N zhao 07/07/20 21800392 Segment: 27 limit: 4.64d, used 5.07d =109.27% 17-Aug-2020 00h to 24-Aug-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201207 21137 IC 2395 70.0 130.625 -48.117 162.3 154.8 63.1 62.4 ACIS-I 4 0 NONE Getman GTO 20 0 N N N N N N swolk 10/31/18 20200315 201293 22329 GJ 358 15.0 144.939 -41.066 177.8 169.7 54.5 52.6 ACIS-S 1 0 NONE Wargelin GO 21 0 S N N N N N bradw 09/16/19 21200395 402183 22670 Swift J1858.6-0814 30.0 284.645 -8.237 259.1 262.6 138.3 132.1 ACIS-S 1 0 NONE Wijnands TOO 21 0 S N N N N N bradw 05/04/20 21400343 503189 22674 PSR J0821-4300 45.0 125.489 -43.005 155.8 148.0 59.7 59.7 ACIS-S 1 0 NONE Halpern GO 21 0 S N N P N N not approved 21500371 601496 22937 Sgr A* 50.0 266.417 -29.008 272.1 271.3 122.2 115.5 ACIS-I 4 0 NONE Baganoff GTO 21 0 N N N P N P not approved 21620612 704004 22964 TXS 2116-077 70.0 319.721 -7.541 229.4 254.5 170.9 166.2 ACIS-S 5 2 NONE Paliya GO 21 0 N N N P N N not approved 21700462 704021 22711 SDSS J1233+4512 2.6 188.358 45.206 298.7 307.6 47.4 45.5 ACIS-S 3 2 NONE Brandt GTO 21 0 N N N N N N malgosia 11/25/19 21700600 801859 21713 RXC J1313.1+4616 20.0 198.338 46.330 290.0 298.0 54.2 51.9 ACIS-I 5 1 NONE Di Gennaro GTO 20 1 N N N N N P not approved 20801009 801882 22653 SPT-CLJ2215-3537 77.0 333.767 -35.620 17.5 1.2 156.9 155.4 ACIS-I 5 1 NONE McDonald GO 21 0 N N N N N N zhao 10/15/19 21800528 801888 22718 J1315+516 10.0 198.659 51.570 293.1 301.1 56.3 54.7 ACIS-I 5 1 NONE Stroe GTO 21 0 N N N N N N zhao 10/09/19 21800611 901417 21651 JWST-DTDF-8 48.0 260.756 65.854 242.9 249.6 87.2 87.0 ACIS-I 6 2 NONE Maksym GO 20 0 N N N N N N kashyap 09/10/19 20900658 Segment: 28 limit: 4.64d, used 3.64d = 78.45% 24-Aug-2020 00h to 31-Aug-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201309 22354 Kapteyn'S Star 10.0 77.971 -45.051 108.2 101.9 87.6 90.2 ACIS-S 6 4 NONE Engle GO 21 0 N N N N N P swolk 04/24/20 21200579 402180 22416 gx 5-1 20.0 270.291 -25.079 271.1 270.8 119.0 112.3 ACIS-S 2 0 HETG Nowak GO 21 0 S N N N Y Y nss 12/09/19 21400565 503194 22703 SNR 1987A 25.0 83.867 -69.270 113.1 106.3 93.2 93.0 HRC-I - - NONE Garmire GTO 21 0 N N N N N N kashyap 09/05/19 21500616 801839 23053 H1821+643 70.0 275.488 64.343 236.3 243.0 93.1 93.0 ACIS-S 1 0 NONE Russell GO 20 0 N N N N N N not approved 20800481 801881 22652 COBRA141155.2+341510 50.0 212.980 34.253 278.1 284.8 58.9 55.2 ACIS-S 5 1 NONE Blanton GO 21 0 N N N N N N zhao 11/08/19 21800500 801881 23059 COBRA141155.2+341510 50.0 212.980 34.253 278.1 284.8 58.9 55.2 ACIS-S 5 1 NONE Blanton GO 21 0 N N N N N N zhao 11/08/19 21800500 801885 22656 SPT-CLJ2205-2956 89.0 331.253 -29.934 354.0 338.2 161.0 157.2 ACIS-I 5 1 NONE McDonald GO 21 0 N N N N N N zhao 10/15/19 21800528 Segment: 29 limit: 4.64d, used 1.89d = 40.73% 31-Aug-2020 00h to 07-Sep-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201294 22330 GJ 358 15.0 144.939 -41.066 161.3 152.6 51.4 50.8 ACIS-S 1 0 NONE Wargelin GO 21 0 S N N N N N bradw 09/16/19 21200395 201305 23050 G104.52+01.24 50.0 335.517 58.676 184.4 191.5 112.7 114.8 ACIS-I 6 2 NONE Winston GO 21 0 N N N P N N not approved 21200492 703913 22525 SDSS J101152.98+5442 30.0 152.971 54.702 9.1 17.0 46.5 49.8 ACIS-S 3 2 NONE Ruan GO 21 0 N N N N N N malgosia 08/20/19 21700036 703987 22601 J1429+5447 30.0 217.467 54.788 292.3 299.8 64.9 63.8 ACIS-S 5 2 NONE Siemiginowska GO 21 0 N N N N N N malgosia 08/21/19 21700383 801880 22651 Abell1838 38.0 210.000 41.058 291.6 299.5 55.0 52.6 ACIS-I 4 0 NONE AKAMATSU GO 21 0 N N N N N N zhao 10/02/19 21800475 Segment: 30 limit: 4.64d, used 1.48d = 31.90% 07-Sep-2020 00h to 14-Sep-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201315 22658 XI BOO 5.0 222.848 19.100 275.4 281.2 56.8 51.9 HRC-I - - NONE AYRES GO 21 0 S N N N N Y kashyap 09/11/19 21200230 703924 22536 Cygnus A-2 60.0 299.868 40.734 233.6 240.8 117.0 115.1 HRC-I - - NONE Snios GO 21 0 N N N N N P kashyap 09/06/19 21700073 704025 22715 Centaurus A 5.0 201.365 -43.019 222.5 217.3 58.6 53.3 ACIS-I 6 2 NONE Kraft GTO 21 0 N N N N N P not approved 21700617 801898 22872 eMACSJ1353.7+4329 38.0 208.434 43.485 302.6 311.0 52.8 51.4 ACIS-I 4 0 NONE Ebeling GO 21 0 N N N N N N not approved 21800648 801899 22873 eMACSJ1527.6+2044 20.0 231.925 20.745 272.9 278.2 65.4 60.6 ACIS-I 4 0 NONE Ebeling GO 21 0 N N N N N N not approved 21800648 Segment: 31 limit: 4.64d, used 1.12d = 24.14% 14-Sep-2020 00h to 21-Sep-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503153 22425 SNR 1987A 97.0 83.867 -69.270 92.7 85.9 92.5 92.2 ACIS-S 6 2 HETG Park GO 21 0 Y Y N N N P not approved 21500082 Segment: 32 limit: 4.64d, used 1.34d = 28.88% 21-Sep-2020 00h to 28-Sep-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 291544 22751 ArLac 5.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291545 22752 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291546 22753 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291547 22754 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291548 22755 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291549 22756 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291550 22757 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291551 22758 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291552 22759 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291553 22760 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291554 22761 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291555 22762 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291556 22763 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291557 22764 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291558 22765 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291559 22766 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291560 22767 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291561 22768 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291562 22769 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291563 22770 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 291564 22771 ArLac 1.0 332.170 45.742 214.3 223.1 128.2 127.9 HRC-I - - NONE Kashyap CAL 21 0 G N N Y N N rpete 01/27/20 21200641 402149 22384 3FGL J1528.3-5836 13.0 232.073 -58.587 237.5 232.7 72.5 67.4 ACIS-S 6 4 NONE Bogdanov GO 21 0 S N N N N N swolk 11/15/19 21400291 704002 22616 SPT0348-62 50.0 57.175 -62.348 61.9 54.8 104.5 104.5 ACIS-I 5 1 NONE Noordeh GO 21 0 N N N N N N not approved 21700445 801891 22721 ZwCl1447.2+2619 30.0 222.368 26.120 293.9 302.1 49.3 46.0 ACIS-I 5 1 NONE Forman GTO 21 1 N N N N N P zhao 04/13/20 21800623 Segment: 33 limit: 4.64d, used 0.58d = 12.50% 28-Sep-2020 00h to 05-Oct-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 704002 22617 SPT0348-62 50.0 57.175 -62.348 54.8 47.7 104.5 104.3 ACIS-I 5 1 NONE Noordeh GO 21 0 N N N N N N not approved 21700445 Segment: 34 limit: 4.64d, used 2.06d = 44.40% 05-Oct-2020 00h to 12-Oct-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201295 22331 GJ 358 15.0 144.939 -41.066 118.5 110.7 54.9 57.4 ACIS-S 1 0 NONE Wargelin GO 21 0 S N N N N N bradw 09/16/19 21200395 402158 22393 A0620-00 20.0 95.688 0.346 85.2 82.4 95.4 101.8 ACIS-I 4 0 NONE Bailyn GO 21 0 N N N N Y N not approved 21400356 703941 22553 MCG -5-23-16 60.0 146.917 -30.949 113.0 105.5 49.0 52.7 ACIS-S 6 2 HETG Zoghbi GO 21 0 S N N N N N hermanm 10/17/19 21700145 703971 22585 NGC 205 84.0 10.092 41.685 181.7 193.0 143.1 145.2 ACIS-S 3 2 NONE Strader GO 21 0 N N N N Y N malgosia 01/16/20 21700277 Segment: 35 limit: 4.64d, used 0.69d = 14.87% 12-Oct-2020 00h to 19-Oct-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 703942 22554 MCG -5-23-16 60.0 146.917 -30.949 105.5 98.6 52.7 56.8 ACIS-S 6 2 HETG Zoghbi GO 21 0 S N N N N N hermanm 10/17/19 21700145 Segment: 36 limit: 4.64d, used 1.10d = 23.71% 19-Oct-2020 00h to 26-Oct-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402191 22699 IGR J16318-4848 75.0 247.951 -48.817 238.4 233.2 53.2 47.5 ACIS-S 6 2 HETG Pradhan GTO 21 0 N N N N P P nss 04/17/20 21400619 704003 22618 PS16dtm 20.0 29.520 -0.873 26.2 355.0 167.8 166.5 ACIS-S 4 0 NONE Blanchard GO 21 0 P N N N N N malgosia 11/14/19 21700450 Segment: 37 limit: 4.64d, used 2.33d = 50.22% 26-Oct-2020 00h to 02-Nov-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503184 22461 AT2019wxt 35.0 28.925 31.418 185.4 207.3 161.0 161.6 ACIS-S 1 0 NONE Madsen TOO 21 0 S N N N N N kashyap 04/05/20 21510455 703612 20611 BR 0351-1034 10.0 58.445 -10.422 50.9 39.8 144.1 147.3 ACIS-S 6 3 NONE Shemmer GO 21 0 S N N N N Y malgosia 12/18/17 19700058 703943 22555 MCG -5-23-16 60.0 146.917 -30.949 92.3 86.6 61.2 66.0 ACIS-S 6 2 HETG Zoghbi GO 21 0 S N N N N N hermanm 10/17/19 21700145 801870 22639 PSZ2 G141.77+14.19 26.0 70.275 68.221 134.8 141.6 118.7 122.6 ACIS-S 5 1 NONE Bartalucci GO 21 1 N N N N N N zhao 10/03/19 21800208 801904 23157 XLSSC 105 70.0 38.402 -5.508 22.9 2.5 160.4 159.7 ACIS-I 6 2 NONE Eckert GO 22 0 N N N N N N zhao 02/05/20 22800002 Segment: 40 limit: 4.64d, used 1.06d = 22.84% 16-Nov-2020 00h to 23-Nov-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 291535 22742 HZ43 2.0 199.090 29.098 37.2 42.6 57.3 62.6 HRC-I - - LETG Kashyap CAL 21 0 Y N N Y N N kashyap 04/20/20 21200637 402184 22671 Swift J1858.6-0814 30.0 284.645 -8.237 287.4 290.5 52.5 45.8 ACIS-S 1 0 NONE Wijnands TOO 21 0 S N N N N N bradw 05/04/20 21400343 703944 22556 MCG -5-23-16 60.0 146.917 -30.949 76.2 71.4 76.1 81.3 ACIS-S 6 2 HETG Zoghbi GO 21 0 S N N N N N hermanm 10/17/19 21700145 Segment: 41 limit: 4.64d, used 0.23d = 4.96% 23-Nov-2020 00h to 30-Nov-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 291542 22749 HZ43 20.0 199.090 29.098 42.6 47.3 62.6 68.2 HRC-S - - LETG Drake CAL 21 0 Y N N Y N N jdrake 10/21/19 21200640 Segment: 42 limit: 4.64d, used 0.65d = 14.01% 30-Nov-2020 00h to 07-Dec-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 801900 22874 eMACSJ1823.1+7822 22.0 275.846 78.387 332.2 339.4 101.5 101.8 ACIS-I 4 0 NONE Ebeling GO 21 0 N Y N N N N not approved 21800648 890173 22829 A1795 15.0 207.220 26.591 41.9 47.0 61.4 66.9 ACIS-S 5 1 NONE Bogdan CAL 21 0 Y N N Y N N abogdan 10/21/19 21800632 890174 22830 A1795 20.0 207.220 26.591 41.9 47.0 61.4 66.9 ACIS-I 5 1 NONE Bogdan CAL 21 0 Y N N Y N N abogdan 10/21/19 21800632 Segment: 43 limit: 4.64d, used 1.74d = 37.50% 07-Dec-2020 00h to 14-Dec-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503192 22677 GW170817 100.0 197.450 -23.381 78.9 76.2 51.7 58.5 ACIS-S 1 0 NONE MARGUTTI GO 21 0 Y N N N Y P not approved 21510449 704002 22976 SPT0348-62 50.0 57.175 -62.348 344.5 337.6 93.9 92.2 ACIS-I 5 1 NONE Noordeh GO 21 0 N N N N N N not approved 21700445 Segment: 44 limit: 4.64d, used 0.58d = 12.50% 14-Dec-2020 00h to 21-Dec-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 704002 22974 SPT0348-62 50.0 57.175 -62.348 337.6 330.7 92.2 90.4 ACIS-I 5 1 NONE Noordeh GO 21 0 N N N N N N not approved 21700445 Segment: 45 limit: 4.64d, used 0.58d = 12.50% 21-Dec-2020 00h to 28-Dec-2020 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 704002 22975 SPT0348-62 50.0 57.175 -62.348 330.7 323.8 90.4 88.6 ACIS-I 5 1 NONE Noordeh GO 21 0 N N N N N N not approved 21700445 Segment: 60 limit: 4.64d, used 0.42d = 9.05% 05-Apr-2021 00h to 12-Apr-2021 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503151 22423 HESS J1731-347 36.0 263.012 -34.757 82.7 81.1 110.8 117.5 ACIS-I 5 1 NONE Doroshenko GO 21 0 N Y N N N N jeanconn 02/13/20 21500044 Segment: 66 limit: 4.64d, used 0.52d = 11.21% 17-May-2021 00h to 24-May-2021 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 601458 22481 IC342 SW 45.0 56.576 68.049 356.7 5.6 48.8 47.4 ACIS-I 6 2 NONE Sell GO 21 0 N N N N N N lduque 08/12/19 21620200

Pool Targets

seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC Mlt CRem Approved Propsal # ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 601470  P 22493 J132751.6+480805.3 16.0 201.965 48.135 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601475  P 22498 J141646.5+144235.1 18.0 214.194 14.710 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601478  P 22501 J101815.1+462623.9 21.0 154.563 46.440 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601480  P 22503 J112509.5+584700.8 21.0 171.289 58.784 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601483  P 22506 J092429.9+514301.2 23.0 141.124 51.717 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601486  P 22509 J114306.5+680717.8 23.0 175.777 68.122 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601487  P 22510 J081420.8+575008.0 23.0 123.587 57.836 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601488  P 22511 J155440.0+413846.9 23.0 238.667 41.646 0.0 0.0 0.0 0.0 ACIS-S 6 3 NONE Lehmer GO 21 0 N N N N N N lduque 08/06/19 21620380 601494  P 22517 J092055 21.0 140.229 52.569 0.0 0.0 0.0 0.0 ACIS-S 4 0 NONE Berg GO 21 0 N N N N N N lduque 08/12/19 21620471 703922  P 22534 SDSS J1407+2418 17.6 211.793 24.315 0.0 0.0 0.0 0.0 ACIS-S 3 2 NONE Brandt GO 21 0 N N N N N N malgosia 08/21/19 21700052 703961  P 22574 F2M1151+5359 18.0 177.850 53.999 0.0 0.0 0.0 0.0 ACIS-S 4 3 NONE Glikman GO 21 0 N N N N N N malgosia 08/21/19 21700216 704009  P 22625 3CR 86 20.0 51.831 55.341 0.0 0.0 0.0 0.0 ACIS-S 4 2 NONE Massaro GO 21 0 N N N N N N malgosia 08/21/19 21700585 704012  P 22628 3CR 137 20.0 79.886 50.909 0.0 0.0 0.0 0.0 ACIS-S 4 2 NONE Massaro GO 21 0 N N N N N N malgosia 08/21/19 21700585

LTS changes

seq# obsid target SI grat observer old LTS bin new LTS bin ------------------------------------------------------------------------------------------------
703777 21481 Spiderweb ACIS-S NONE Tozzi 27-Jul-2020 --> unscheduled 402177 22413 gx 5-1 ACIS-S HETG Nowak 13-Jul-2020 --> unscheduled 402179 22415 gx 5-1 ACIS-S HETG Nowak 27-Jul-2020 --> unscheduled 402181 22417 sct X-1 ACIS-I NONE Bozzo 13-Jul-2020 --> unscheduled 201285  H 22990 Westerlund 1 ACIS-I NONE Drake unscheduled --> 13-Jul-2020 801839 23239 H1821+643 ACIS-S NONE Russell 03-Aug-2020 --> 13-Jul-2020 201344 23148 Betelgeuse HRC-I NONE Kashyap (not in lts) --> 10-Aug-2020 503131 23317 N132D ACIS-S NONE Plucinsky (not in lts) --> 13-Jul-2020 300463 23318 V1223 Sgr ACIS-S HETG Hayashi (not in lts) --> 13-Jul-2020 801839 23319 H1821+643 ACIS-S NONE Russell (not in lts) --> 13-Jul-2020

TABLE HEADERS:

ColumnDefinition
seq#Sequence number
obsObservation ID
nameTarget name
timeApproved time (ksec.)
RARight ascension (deg., J2000)
decDeclination (deg., J2000)
Roll rangeRoll angles at start and end of two-week bin
Pitch rangePitch angles at start and end of two-week bin
SIScience Instrument
RRequested chip count (ACIS only)
OOptional chip count (ACIS only)
gratGrating
observerObserver
TypeObservation type (GO, GTO, TOO, DDT, CAL)
AOCycle (announcement of opportunity) number
OR#Number of times displaced from a previous short-term schedule
TCTime constraint
RCRoll constraint
PCPhase constraint
UCUninterrupt constraint
MltMultiple telescopes (coordination constraint)
CRemConstraint in remarks
ApprovedFlight approval status
Propsal #Proposal number

Possible constraint flags are (Y)es, (P)reference, (N)o. Time constraints may have (S)eries flags for monitoring observations.



Last modified: 07/07/20





The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory.
60 Garden Street, Cambridge, MA 02138 USA.    Email: cxcweb@head.cfa.harvard.edu
Smithsonian Institution, Copyright © 1998-2004. All rights reserved.