|
|
|
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.
Click here for a list of changes from the last LTS.
Click here for table header definitions.
Segment: 29 limit: 5.29d, used 5.00d = 94.52% 01-Sep-2025 00h to 08-Sep-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201666 28339 G29-38 10.0 352.199 5.248 138.2 152.0 161.7 167.5 HRC-I - - NONE Cunningham GO 25 0 S N N N N N N Y kashyap 04/09/25 25200153 201666 31480 G29-38 10.0 352.199 5.248 138.2 152.0 161.7 167.5 HRC-I - - NONE Cunningham GO 25 0 S N N N N N N Y approval not required 25200153 201694 30655 BD+21 516 6.5 56.291 21.704 103.0 103.3 99.4 106.2 HRC-I - - NONE Ayres GO 25 0 N N N N N Y N N approval not required 25200528 201697 30647 HD 282963 6.5 56.595 24.570 103.3 103.9 98.5 105.3 HRC-I - - NONE Ayres GO 25 0 N N N N N Y N N approval not required 25200528 201705 30649 HD 282973 6.5 57.020 23.915 103.1 103.5 98.3 105.0 HRC-I - - NONE Ayres GO 25 0 N N N N N Y N N approval not required 25200528 402527 29745 AT2025ulz 10.0 237.976 30.902 268.9 274.5 75.4 71.3 ACIS-S 4 2 NONE O'Connor TOO 26 0 R N N N N N N N waaron 08/22/25 26400095 402527 31484 AT2025ulz 25.0 237.976 30.902 268.9 274.5 75.4 71.3 ACIS-S 4 2 NONE O'Connor TOO 26 0 R N N N N N N N approval not required 26400095 402527 31485 AT2025ulz 15.0 237.976 30.902 268.9 274.5 75.4 71.3 ACIS-S 4 2 NONE O'Connor TOO 26 0 R N N N N N N N approval not required 26400095 402536 P 29754 1eRASS J025933.4-120 1.0 44.889 -12.078 93.5 89.4 116.2 121.9 ACIS-S 3 0 NONE Zhao GO 26 0 N N N N N N N N swolk 10/16/24 26400131 402654 31468 GRB 250702B 40.0 284.690 -7.874 265.3 267.7 125.3 118.8 ACIS-S 4 2 NONE Eyles-Ferris DDT 26 0 R N N N N N N N malgosia 08/15/25 26409058 601615 28121 NGC1385 19.0 54.368 -24.501 91.3 86.2 107.7 112.4 ACIS-S 5 3 NONE Lehmer GO 25 0 N N N N N N N N jeanconn 10/12/23 25620364 601615 31479 NGC1385 35.0 54.368 -24.501 91.3 86.2 107.7 112.4 ACIS-S 5 3 NONE Lehmer GO 25 0 N N N N N N N N approval not required 25620364 601640 H 29645 NGC2566 14.0 124.690 -25.499 130.0 121.9 48.3 51.1 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601640 H 31482 NGC2566 20.0 124.690 -25.499 130.0 121.9 48.3 51.1 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N approval not required 25628968 601640 H 31483 NGC2566 16.0 124.690 -25.499 130.0 121.9 48.3 51.1 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N approval not required 25628968 704981 H 28609 Abell 370 30.0 39.960 -1.586 98.8 96.1 119.9 126.3 ACIS-I 4 0 NONE Bogdan GO 25 0 N N N N N N N N abogdan 09/13/23 25700214 704981 H 28628 Abell 370 30.0 39.960 -1.586 98.8 96.1 119.9 126.3 ACIS-I 4 0 NONE Bogdan GO 25 0 N N N N N N N N abogdan 09/13/23 25700214 705233 30213 WISE J2246-0526 29.0 341.531 -5.443 152.9 265.2 176.7 175.2 ACIS-S 2 0 NONE Fernández Aranda GO 26 0 N N N N N N N N malgosia 10/11/24 26700205 705233 31486 WISE J2246-0526 16.0 341.531 -5.443 152.9 265.2 176.7 175.2 ACIS-S 2 0 NONE Fernández Aranda GO 26 0 N N N N N N N N approval not required 26700205 705486 C 31477 SDSSJ095613.48+54590 15.0 149.056 54.985 14.8 22.3 47.4 51.1 ACIS-S 2 0 NONE Civano CCT 26 0 N N N N N N N N CCT - approved 20701058 705487 C 31478 SDSSJ230906.96-10083 20.0 347.279 -10.144 76.9 12.4 172.6 175.6 ACIS-S 2 0 NONE Civano CCT 26 0 N N N N N N N N CCT - approved 20701058 802153 30465 ACT-CL_J0034.4+0225 15.0 8.608 2.426 111.1 110.4 149.5 156.3 ACIS-S 5 1 NONE Hughes GO 25 0 N N N N N N N N approval not required 25800453 802183 28826 SPT-CL J2305-2248 15.1 346.298 -22.815 23.7 359.9 164.4 163.0 ACIS-I 4 0 NONE Kraft GTO 25 0 N N N N N N N N bradw 10/30/23 25800488 802183 31473 SPT-CL J2305-2248 14.0 346.298 -22.815 23.7 359.9 164.4 163.0 ACIS-I 4 0 NONE Kraft GTO 25 0 N N N N N N N N approval not required 25800488 802183 31481 SPT-CL J2305-2248 11.0 346.298 -22.815 23.7 359.9 164.4 163.0 ACIS-I 4 0 NONE Kraft GTO 25 0 N N N N N N N N approval not required 25800488 Segment: 30 limit: 4.80d, used 4.10d = 85.42% 08-Sep-2025 00h to 15-Sep-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 100231 29673 Jupiter 14.5 111.478 21.959 81.6 81.6 55.3 62.1 HRC-S - - NONE Rutala GO 26 0 Y N N N N N Y N swolk 08/05/25 26100029 100237 29679 WASP-69 20.0 315.026 -5.094 267.2 271.5 148.8 142.5 HRC-I - - NONE Levine GO 26 0 S N N N N Y N N kashyap 11/13/24 26100072 201643 30652 HD 286085 13.0 72.503 16.412 96.7 95.9 92.0 98.8 HRC-I - - NONE Ayres GO 25 0 N N N N N Y N N approval not required 25200053 300558 29800 VV Pup 40.0 123.778 -19.055 116.5 109.5 48.7 52.9 ACIS-S 6 2 HETG Rodriguez GO 26 0 N N N N N N N N nss 03/26/25 26300401 503507 28779 SN 2003gk 12.0 345.429 2.269 186.3 233.0 171.9 171.0 HRC-I - - NONE Patnaude GTO 25 0 N N N N N N N N kashyap 12/06/23 25500501 601615 28543 NGC1385 30.0 54.368 -24.501 86.2 80.6 112.4 116.9 ACIS-S 5 3 NONE Lehmer GO 25 1 N N N N N N N N jeanconn 10/12/23 25620364 601615 28544 NGC1385 30.0 54.368 -24.501 86.2 80.6 112.4 116.9 ACIS-S 5 3 NONE Lehmer GO 25 0 N N N N N N N N jeanconn 10/12/23 25620364 601640 H 30151 NGC2566 30.0 124.690 -25.499 121.9 114.5 51.1 54.5 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 704979 28170 WISE J025942.86-1635 35.0 44.929 -16.595 86.6 81.2 121.7 126.9 ACIS-S 2 0 NONE Chartas GO 25 0 N N N N N N N N waaron 10/30/23 25700156 704981 H 28611 Abell 370 30.0 39.960 -1.586 96.1 92.8 126.3 132.7 ACIS-I 4 0 NONE Bogdan GO 25 0 N N N N N N N N abogdan 09/13/23 25700214 705068 28259 SDSS J165243.49+3922 4.0 253.181 39.370 267.5 273.6 83.9 80.7 ACIS-S 4 0 NONE Nair GO 25 0 N N N N N N N N malgosia 10/17/23 25700326 705233 29945 WISE J2246-0526 30.0 341.531 -5.443 265.2 281.3 175.2 168.7 ACIS-S 2 0 NONE Fernández Aranda GO 26 0 N N N N N N N N malgosia 10/11/24 26700205 705233 30216 WISE J2246-0526 30.0 341.531 -5.443 265.2 281.3 175.2 168.7 ACIS-S 2 0 NONE Fernández Aranda GO 26 0 N N N N N N N N malgosia 10/11/24 26700205 802143 28682 Abell 3017 23.0 36.468 -41.918 65.3 57.5 122.8 124.9 ACIS-S 5 2 NONE Sun GO 25 0 N N N N N N N N bradw 10/20/23 25800186 890255 29625 Perseus Cluster 10.0 49.951 41.512 112.5 115.3 105.3 111.5 ACIS-I 2 0 NONE Bogdan CAL 26 0 Y N N N N N N Y abogdan 10/23/24 26800469 Segment: 31 limit: 4.73d, used 4.04d = 85.41% 15-Sep-2025 00h to 22-Sep-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 100232 29674 Jupiter 14.5 111.615 21.942 81.5 81.5 62.0 68.8 HRC-S - - NONE Rutala GO 26 0 Y N N N N N Y N swolk 08/05/25 26100029 402511 28770 M33 X-8 20.5 23.461 30.660 133.4 138.5 135.2 141.1 ACIS-S 6 2 HETG Canizares GTO 25 1 N N N N N N N N nss 09/18/23 25400509 402511 30595 M33 X-8 19.0 23.461 30.660 133.4 138.5 135.2 141.1 ACIS-S 6 2 HETG Canizares GTO 25 1 N N N N N N N N approval not required 25400509 402587 30531 4U 1626-67 30.0 248.070 -67.462 255.4 250.5 87.4 82.6 HRC-I - - HETG Schulz GTO 26 0 N N N N N N N N nss 01/03/25 26400497 503518 29803 SNR 1987A 59.0 83.867 -69.270 92.3 85.4 92.5 92.2 ACIS-S 6 2 HETG Park GO 26 0 Y Y N N N N N N nss 07/24/25 26500018 503527 29812 SGR 0501 12.0 75.278 45.276 97.4 100.1 92.9 99.2 HRC-I - - NONE Alford GO 26 0 N N N N N N N N kashyap 06/25/25 26500074 601685 29875 SDSS J082730.64+1921 15.0 126.878 19.367 75.9 76.0 47.5 54.3 ACIS-S 4 2 NONE Lehmer GO 26 1 N N N N N N N N waaron 10/16/24 26620185 704981 H 28625 Abell 370 12.7 39.960 -1.586 92.8 88.9 132.7 138.9 ACIS-I 4 0 NONE Bogdan GO 25 1 N N N N N N N N abogdan 09/13/23 25700214 704981 H 28633 Abell 370 30.0 39.960 -1.586 92.8 88.9 132.7 138.9 ACIS-I 4 0 NONE Bogdan GO 25 0 N N N N N N N N abogdan 09/13/23 25700214 705222 29934 SDSS J134009.43+4114 24.9 205.039 41.245 313.8 323.1 48.0 47.1 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N kashyap 03/11/25 26700090 705248 29960 6dFGS gJ231719.6-043 23.1 349.332 -4.628 294.4 293.4 176.4 169.6 ACIS-S 2 0 NONE Pfeifle GO 26 0 N N N N N N N N malgosia 10/28/24 26700211 705326 30509 Centaurus A 5.0 201.353 -42.999 217.0 211.0 52.9 47.9 ACIS-I 5 1 NONE Schellenberger GTO 26 0 S N N N Y Y N N bradw 10/25/24 26700490 802144 28686 A85 North 30.0 10.445 -9.113 72.5 53.6 161.3 165.6 ACIS-I 4 0 NONE Walker GO 25 0 N N N N N N N N bradw 10/19/23 25800211 890256 29626 Perseus Cluster 10.0 49.951 41.512 115.3 118.5 111.5 117.8 ACIS-I 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26800469 890257 29627 Perseus Cluster 10.0 49.951 41.512 115.3 118.5 111.5 117.8 ACIS-I 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26800469 890258 29628 Perseus Cluster 10.0 49.951 41.512 115.3 118.5 111.5 117.8 ACIS-I 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26800469 890259 29629 Perseus Cluster 10.0 49.951 41.512 115.3 118.5 111.5 117.8 ACIS-S 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26800469 890260 29630 Perseus Cluster 10.0 49.951 41.512 115.3 118.5 111.5 117.8 ACIS-S 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26800469 Segment: 32 limit: 5.19d, used 4.43d = 85.36% 22-Sep-2025 00h to 29-Sep-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402587 30491 4U 1626-67 40.0 248.070 -67.462 250.5 245.5 82.6 77.8 HRC-I - - HETG Schulz GTO 26 0 N N N N N N N N nss 01/03/25 26400497 503477 28074 XMMU J170147.3-42140 22.0 255.447 -42.235 260.5 258.1 80.4 74.0 ACIS-I 4 0 NONE Yang GO 25 1 N N N N N N N N jeanconn 11/22/23 25500393 503580 30484 SN 2017eaw 15.0 308.684 60.193 234.0 241.2 108.1 108.0 HRC-I - - NONE Patnaude GTO 26 0 N N N N N N N N kashyap 12/17/24 26500499 590774 29598 Cas A 2.0 350.858 58.815 189.3 197.0 120.4 122.4 ACIS-I 2 0 NONE Bogdan CAL 26 0 Y N N N N N N Y abogdan 10/23/24 26500467 601669 30185 WLM 30.0 0.492 -15.461 6.1 345.0 164.9 161.7 ACIS-I 6 2 NONE Lazzarini GO 26 0 N N N N N N N N waaron 11/21/24 26620010 601675 29865 AM0305-824 40.0 45.438 -82.592 46.8 40.3 95.5 93.4 ACIS-S 4 2 NONE Fruscione GO 26 0 N N N N N N N N waaron 12/07/24 26620058 601676 29866 AM2107-474 30.0 317.630 -47.509 309.8 305.4 120.9 115.2 ACIS-S 4 2 NONE Fruscione GO 26 0 N N N N N N N N waaron 12/07/24 26620058 601679 29869 SDSS J003710.56-0927 13.0 9.294 -9.457 49.5 19.5 166.3 167.6 ACIS-S 4 2 NONE Lehmer GO 26 0 N N N N N N N N waaron 10/16/24 26620185 704981 H 28589 Abell 370 30.0 39.960 -1.586 88.9 83.8 138.9 145.0 ACIS-I 4 0 NONE Bogdan GO 25 0 N N N N N N N N abogdan 09/13/23 25700214 705147 29108 WISEA J232742.89+483 5.0 351.929 48.588 189.2 198.0 130.6 132.3 ACIS-S 2 0 NONE Lacy GO 25 0 N N N N N N N N malgosia 12/16/23 25700532 705215 P 29927 SDSS J011441.96+0349 14.1 18.675 3.821 101.8 96.2 159.8 166.4 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N kashyap 03/11/25 26700090 705243 29955 WISE J010050.09-0242 23.4 15.209 -2.705 82.4 63.7 163.5 168.8 ACIS-S 3 0 NONE Pfeifle GO 26 0 N N N N N N N N malgosia 10/28/24 26700211 705257 29969 SDSS J005855.46+0100 23.4 14.731 1.005 95.2 82.3 164.1 170.4 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N malgosia 11/19/24 26700222 705258 P 29970 SDSS J011207.48-0059 11.4 18.031 -0.999 88.5 75.7 160.9 166.7 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N malgosia 11/19/24 26700222 705488 31487 NEXUS 40.0 268.479 65.200 270.2 277.0 89.4 89.3 ACIS-I 6 2 NONE Zhao DDT 26 0 R N N N N Y N N kashyap 08/27/25 26709063 802154 30564 A1550 20.0 187.243 47.622 348.7 357.3 47.7 49.9 ACIS-I 4 0 NONE Simionescu GTO 25 1 N N N N N N N N approval not required 25800470 802231 30489 PSZ2G085.23+39.42 25.0 251.622 56.483 284.3 291.2 80.2 79.2 ACIS-I 4 0 NONE Rajpurohit GTO 26 0 N N N N N N N N bradw 11/01/24 26800498 Segment: 33 limit: 4.70d, used 4.07d = 86.60% 29-Sep-2025 00h to 06-Oct-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 291763 29531 Vega 2.0 279.237 38.786 269.2 275.3 94.6 91.4 HRC-I - - NONE Kashyap CAL 26 0 Y N N Y N N N N rpete 10/04/24 26200474 291764 29532 Vega 2.0 279.237 38.786 269.2 275.3 94.6 91.4 HRC-S - - NONE Kashyap CAL 26 0 Y N N Y N N N N rpete 10/04/24 26200474 291765 29533 Vega 1.0 279.237 38.786 269.2 275.3 94.6 91.4 HRC-S - - NONE Kashyap CAL 26 0 Y N N Y N N N N rpete 10/04/24 26200474 402491 28037 SMC 2857 21.0 14.417 -71.988 9.6 3.0 105.5 103.0 ACIS-S 4 2 NONE Ludwig GO 25 2 N N N N N N N N swolk 10/30/23 25400397 402528 29746 AT2025ulz 50.0 237.976 30.902 293.4 300.6 60.1 57.0 ACIS-S 4 2 NONE O'Connor TOO 26 0 S N N N N N N N waaron 08/22/25 26400095 503518 30116 SNR 1987A 30.0 83.867 -69.270 78.6 71.7 91.8 91.5 ACIS-S 6 2 HETG Park GO 26 0 Y Y N N N N N N nss 07/24/25 26500018 590775 29599 Cas A 2.0 350.858 58.815 197.0 205.0 122.4 123.9 ACIS-I 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26500467 590776 29600 Cas A 2.0 350.858 58.815 197.0 205.0 122.4 123.9 ACIS-I 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26500467 590777 29601 Cas A 2.0 350.858 58.815 197.0 205.0 122.4 123.9 ACIS-I 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26500467 590778 29602 Cas A 2.0 350.858 58.815 197.0 205.0 122.4 123.9 ACIS-S 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26500467 590779 29603 Cas A 2.0 350.858 58.815 197.0 205.0 122.4 123.9 ACIS-S 2 0 NONE Bogdan CAL 26 0 G N N N N N N Y abogdan 10/23/24 26500467 601591 28097 UM 351 25.0 24.594 1.901 88.6 76.3 160.6 166.6 ACIS-S 5 3 NONE Irwin GO 25 1 N N N N N N N N jeanconn 12/18/23 25620199 601669 29859 WLM 57.0 0.492 -15.461 345.0 331.1 161.7 156.8 ACIS-I 6 2 NONE Lazzarini GO 26 0 N N N N N N N N waaron 11/21/24 26620010 601714 30851 II Zw 40 100.0 88.928 3.392 88.1 85.6 96.4 102.8 ACIS-I 4 0 NONE Oskinova GO 26 0 N N N N N N P N waaron 03/17/25 27620014 802116 28670 NGC410 30.0 17.745 33.152 156.5 167.0 147.0 151.3 ACIS-S 4 1 NONE O'Sullivan GO 25 0 N N N N N N N N bradw 10/16/23 25800020 901864 28136 IGR J17598-2236 5.0 269.950 -22.600 270.1 270.2 84.3 77.4 ACIS-S 2 0 NONE Chakraborty GO 25 0 N N N N N N N N dj 10/27/23 25910434 901886 30542 CMZ Molecular Cloud 20.0 266.550 -28.889 267.8 267.1 81.3 74.5 ACIS-I 4 0 NONE Vikhlinin GTO 26 0 N N N N N N N N dj 08/25/25 26910495 Segment: 34 limit: 4.70d, used 4.03d = 85.74% 06-Oct-2025 00h to 13-Oct-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503454 28051 PSR J2229+6114 40.0 337.272 61.236 219.5 227.4 118.2 118.6 ACIS-I 4 0 NONE Halpern GO 25 0 N N N N N N N N jeanconn 11/27/23 25500048 503557 29842 PSR J2017+3625 30.0 304.483 36.419 260.1 266.4 111.4 107.8 ACIS-I 4 0 NONE Romani GO 26 0 N N N N N N N N jeanconn 10/17/24 26500294 503584 30493 1E 161348-5055.1 30.0 244.401 -51.040 242.5 238.1 63.5 57.8 ACIS-S 2 0 NONE Garmire GTO 26 0 S N N Y N Y N Y jeanconn 11/07/24 26500496 601635 H 29640 NGC1546 55.0 63.652 -56.061 54.7 47.5 105.6 106.0 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601640 H 30153 NGC2566 30.0 124.690 -25.499 95.6 90.2 67.0 71.7 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 704981 H 28605 Abell 370 30.0 39.960 -1.586 76.8 66.9 150.8 156.2 ACIS-I 4 0 NONE Bogdan GO 25 0 N N N N N N N N abogdan 09/13/23 25700214 704981 H 28626 Abell 370 30.0 39.960 -1.586 76.8 66.9 150.8 156.2 ACIS-I 4 0 NONE Bogdan GO 25 0 N N N N N N N N abogdan 09/13/23 25700214 705255 P 29967 SDSS J015634.87-0110 19.9 29.144 -1.184 70.5 51.4 161.3 165.8 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N malgosia 11/19/24 26700222 705276 29988 NGC 3516 36.0 166.698 72.569 25.2 31.3 79.2 82.7 ACIS-S 2 0 HETG Miller GO 26 0 N N N N N N N N hermanm 04/30/25 26700317 802135 28320 PSZ2G302.85-88.63 6.0 12.862 -28.498 2.4 351.4 146.5 143.5 ACIS-I 5 1 NONE McDonald GO 25 0 N N N N N N N N bradw 09/08/23 25800174 802153 28723 ACT-CL_J0034.4+0225 34.5 8.608 2.426 311.6 299.5 176.1 169.3 ACIS-S 5 1 NONE Hughes GO 25 0 N N N N N N N N bradw 11/02/23 25800453 901878 29904 IGR J07141+0146 5.0 108.547 1.744 84.8 82.3 83.2 89.7 ACIS-I 4 0 NONE Chakraborty GO 26 1 N N N N N N N N dj 12/03/24 26910413 Segment: 35 limit: 5.18d, used 4.30d = 83.01% 13-Oct-2025 00h to 20-Oct-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201810 30088 TV Cassiopeia 30.0 4.828 59.139 196.5 205.1 127.5 128.9 ACIS-S 6 2 HETG Yang GO 26 0 N N N N N N N N nss 02/21/25 26200417 201814 30515 WR 11 20.0 122.383 -47.337 95.4 88.8 74.6 77.2 ACIS-S 6 2 HETG Gunderson GTO 26 0 S N Y N N Y P N nss 01/05/25 26200484 201815 30516 WR 11 20.0 122.383 -47.337 95.4 88.8 74.6 77.2 ACIS-S 6 2 HETG Gunderson GTO 26 0 S N Y N N Y P N nss 01/05/25 26200484 201816 30517 WR 11 20.0 122.383 -47.337 95.4 88.8 74.6 77.2 ACIS-S 6 2 HETG Gunderson GTO 26 0 S N Y N N Y P N nss 01/05/25 26200484 291766 29534 Vega 1.0 279.237 38.786 281.4 287.5 88.0 84.8 HRC-S - - NONE Kashyap CAL 26 0 Y N N Y N N N N rpete 10/04/24 26200474 291767 29535 Vega 1.0 279.237 38.786 281.4 287.5 88.0 84.8 HRC-S - - NONE Kashyap CAL 26 0 Y N N Y N N N N rpete 10/04/24 26200474 503551 30729 PSR J1418-6058 16.0 214.678 -60.968 200.4 192.9 54.8 51.3 ACIS-I 4 0 NONE Romani GO 26 2 N N N N N N N N jeanconn 03/14/25 26500294 503559 29844 PSR J1957+5033 29.0 299.410 50.556 266.0 272.8 103.1 101.0 ACIS-I 4 0 NONE Romani GO 26 0 N N N N N N N N jeanconn 10/17/24 26500308 601666 H 30184 IC5273 30.0 344.861 -37.703 318.5 313.9 125.1 119.4 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601667 H 29672 NGC7456 22.0 345.543 -39.569 320.1 315.3 124.1 118.5 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601672 29862 AM0126-525 40.0 22.105 -52.636 4.7 357.4 119.6 117.1 ACIS-S 4 2 NONE Fruscione GO 26 0 N N N N N N N N waaron 12/07/24 26620058 601686 P 29876 Mrk 247 18.0 198.652 54.798 359.2 6.3 62.4 65.2 ACIS-S 4 2 NONE Lehmer GO 26 0 N N N N N N N N waaron 10/16/24 26620185 705254 29966 SDSS J014137.22-0914 23.8 25.404 -9.244 23.9 2.8 161.6 160.5 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N malgosia 11/19/24 26700222 705306 P 30018 PS16dtm 20.0 29.520 -0.873 53.3 24.3 165.7 167.8 ACIS-S 2 0 NONE Blanchard GO 26 0 Y N N N N N N N bradw 10/10/24 26700454 802205 30410 MACS J0018.5+1626 30.0 4.639 16.443 237.5 254.6 164.3 159.7 ACIS-I 4 0 NONE Sayers GO 26 0 N N N N N N N N bradw 11/12/24 26800149 802205 30415 MACS J0018.5+1626 30.0 4.639 16.443 237.5 254.6 164.3 159.7 ACIS-I 4 0 NONE Sayers GO 26 0 N N N N N N N N bradw 11/12/24 26800149 802210 30028 SPT-CLJ0421-4845 20.0 65.321 -48.761 50.9 43.6 110.0 110.9 ACIS-I 4 0 NONE Floyd GO 26 0 N N N N N N N Y bradw 11/10/24 26800279 Segment: 36 limit: 4.69d, used 3.83d = 81.66% 20-Oct-2025 00h to 27-Oct-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201810 30086 TV Cassiopeia 30.0 4.828 59.139 205.1 214.1 128.9 129.6 ACIS-S 6 2 HETG Yang GO 26 0 N N N N N N N N nss 02/21/25 26200417 201817 30518 WR 11 20.0 122.383 -47.337 88.8 82.2 77.2 79.9 ACIS-S 6 2 HETG Gunderson GTO 26 0 S N Y N N Y P N nss 01/05/25 26200484 201818 30519 WR 11 20.0 122.383 -47.337 88.8 82.2 77.2 79.9 ACIS-S 6 2 HETG Gunderson GTO 26 0 S N Y N N Y P N nss 01/05/25 26200484 402588 30533 Cygnus X-2 30.0 326.172 38.321 257.8 264.6 121.0 117.4 ACIS-S 2 0 HETG Psaradaki GTO 26 0 N N N N N N N N approval not required 26400494 601635 H 30147 NGC1546 30.0 63.652 -56.061 40.4 33.1 106.2 106.1 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601643 H 29648 NGC3137 49.0 152.281 -29.064 100.1 93.6 52.2 56.8 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 705305 30233 [vD2023]1 30.0 40.440 -8.351 40.9 23.8 155.6 157.0 ACIS-I 4 0 NONE Tremblay GO 26 0 N N N N N N N N bradw 11/07/24 26700422 705305 30236 [vD2023]1 30.0 40.440 -8.351 40.9 23.8 155.6 157.0 ACIS-I 4 0 NONE Tremblay GO 26 0 N N N N N N N N bradw 11/07/24 26700422 802205 30411 MACS J0018.5+1626 30.0 4.639 16.443 254.6 265.2 159.7 154.1 ACIS-I 4 0 NONE Sayers GO 26 0 N N N N N N N N bradw 11/12/24 26800149 802237 30538 1RXS J021649.0+70355 30.0 34.204 70.598 169.0 176.5 119.3 122.1 ACIS-I 4 0 NONE Tumer GTO 26 0 N N N N N N N N bradw 11/18/24 26800482 802237 30539 1RXS J021649.0+70355 30.0 34.204 70.598 169.0 176.5 119.3 122.1 ACIS-I 4 0 NONE Tumer GTO 26 0 N N N N N N N N bradw 11/18/24 26800482 Segment: 37 limit: 4.84d, used 3.89d = 80.37% 27-Oct-2025 00h to 03-Nov-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402575 29793 IC 10 X-1 30.0 5.121 59.281 213.7 222.8 129.5 129.5 ACIS-S 6 4 NONE Laycock GO 26 0 N N Y N N N N N not approved 26400357 402597 30505 Vela X-1 15.0 135.529 -40.555 89.4 83.2 70.9 74.7 ACIS-S 5 2 HETG Huenemoerder GTO 26 0 N N Y N N N N N hermanm 12/02/24 26400492 503531 30122 Cassiopeia A 30.0 350.871 58.820 230.3 238.8 125.0 124.1 ACIS-S 2 0 NONE Yamada GO 26 0 N N N N N N N N jeanconn 11/15/24 26500140 503560 29845 PSR J2055+2539 30.0 313.954 25.666 276.3 281.1 106.9 101.7 ACIS-I 4 0 NONE Romani GO 26 0 N N N N N N N N jeanconn 10/17/24 26500308 601634 H 30146 IC1954 30.0 52.881 -51.905 23.1 15.5 112.7 111.9 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601639 H 29644 NGC2283 28.0 101.471 -18.212 71.3 66.3 104.1 109.2 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601646 H 29651 NGC3596 36.0 168.776 14.787 58.9 60.7 50.1 57.0 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601683 29873 SDSS J023749.52-0925 23.0 39.456 -9.432 20.6 3.4 156.4 155.6 ACIS-S 4 2 NONE Lehmer GO 26 0 N N N N N N N N waaron 10/16/24 26620185 705264 29976 SDSS J130557.09+3250 22.7 196.489 32.837 19.5 26.7 47.6 52.0 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N malgosia 11/19/24 26700222 705305 30229 [vD2023]1 30.0 40.440 -8.351 23.8 6.0 157.0 156.6 ACIS-I 4 0 NONE Tremblay GO 26 0 N N N N N N N N bradw 11/07/24 26700422 705305 30230 [vD2023]1 30.0 40.440 -8.351 23.8 6.0 157.0 156.6 ACIS-I 4 0 NONE Tremblay GO 26 0 N N N N N N N N bradw 11/07/24 26700422 802200 H 30370 Perseus cluster E 30.0 50.060 41.509 144.7 155.0 146.8 151.4 ACIS-I 5 1 NONE Fabian CLP 25 0 N N N N N N N Y bradw 11/14/24 25808977 Segment: 38 limit: 5.11d, used 4.08d = 79.84% 03-Nov-2025 00h to 10-Nov-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 291762 29530 HZ43 2.0 199.090 29.098 25.0 31.7 47.7 52.5 HRC-I - - LETG Kashyap CAL 26 0 Y N N Y N N N N kashyap 04/14/25 26200472 291769 29537 HZ43 20.0 199.090 29.098 25.0 31.7 47.7 52.5 HRC-S - - LETG Kashyap CAL 26 0 Y N N N N N N N kashyap 04/14/25 26200475 300558 30099 VV Pup 30.0 123.778 -19.055 74.5 70.2 89.0 94.5 ACIS-S 6 2 HETG Rodriguez GO 26 0 N N N N N N N N nss 03/26/25 26300401 503540 29825 SN 1986J 15.0 35.631 42.332 184.9 200.2 152.5 153.5 ACIS-S 4 2 NONE Dwarkadas GO 26 0 S N N N N Y N N jeanconn 11/01/24 26500236 601631 H 30141 NGC0685 28.2 26.928 -52.762 348.5 341.9 111.6 108.5 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601644 H 29649 NGC3239 23.0 156.270 17.164 65.9 66.7 68.8 75.7 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601645 H 29650 NGC3511 34.0 165.849 -23.087 89.7 84.6 49.7 55.4 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601666 H 29671 IC5273 47.0 344.861 -37.703 305.9 302.3 107.5 101.4 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601684 29874 SDSS J131603.91+2922 23.0 199.016 29.382 25.0 31.6 48.0 52.7 ACIS-S 4 2 NONE Lehmer GO 26 0 N N N N N N N N waaron 10/16/24 26620185 705214 29926 SDSS J022226.11-0857 24.8 35.609 -8.950 354.4 340.5 156.0 152.4 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N kashyap 03/11/25 26700090 802196 H 30315 Perseus cluster 30.0 49.951 41.512 155.2 168.5 151.5 155.2 ACIS-I 5 1 NONE Fabian CLP 25 0 N N N N N N N Y bradw 11/14/24 25808977 802211 30029 SPT-CLJ0446-4606 25.0 71.732 -46.101 35.3 27.8 111.8 112.3 ACIS-I 4 0 NONE Floyd GO 26 0 N N N N N N N Y bradw 11/10/24 26800279 802230 30488 PSZ2G144.99-24.64 50.0 37.189 34.027 182.3 204.1 160.9 161.7 ACIS-I 4 0 NONE Rajpurohit GTO 26 0 N N N N N N N N bradw 11/01/24 26800498 Segment: 39 limit: 4.77d, used 3.92d = 82.18% 10-Nov-2025 00h to 17-Nov-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 601634 H 29639 IC1954 52.0 52.881 -51.905 8.2 0.8 110.7 109.2 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601647 H 30161 NGC3626 30.0 170.016 18.357 60.0 61.8 64.6 71.4 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601647 H 30162 NGC3626 30.0 170.016 18.357 60.0 61.8 64.6 71.4 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601706 30496 NGC 1140 34.0 43.640 -10.029 357.3 344.0 152.9 149.9 ACIS-S 2 0 NONE Monson GTO 26 0 N N N N N N N N waaron 11/18/24 26620493 705224 29936 NGC 1358 30.0 53.415 -5.090 20.6 3.1 156.3 155.9 ACIS-S 5 1 NONE Marchesi GO 26 0 S N N N N Y Y N kashyap 03/31/25 26700102 705273 29985 MCG-5-23-16 32.0 146.917 -30.949 80.9 75.9 71.2 76.4 ACIS-S 1 0 HETG Miller GO 26 0 N N N N N N N N hermanm 04/30/25 26700317 705279 30224 NGC 4051 20.0 180.790 44.531 43.9 48.8 73.5 78.8 ACIS-S 2 0 HETG Miller GO 26 0 N N N N N N N N hermanm 04/30/25 26700317 802196 H 29631 Perseus cluster 50.0 49.951 41.512 168.5 185.2 155.2 157.3 ACIS-I 5 1 NONE Fabian CLP 25 0 N N N N N N N Y bradw 11/14/24 25808977 802196 H 30301 Perseus cluster 30.0 49.951 41.512 168.5 185.2 155.2 157.3 ACIS-I 5 1 NONE Fabian CLP 25 0 N N N N N N N Y bradw 11/14/24 25808977 802201 30377 Abell 795 30.0 141.022 14.173 72.0 71.8 88.5 95.5 ACIS-S 4 2 NONE UBERTOSI GO 26 0 N N N N N N N N bradw 10/29/24 26800045 Segment: 40 limit: 5.03d, used 1.00d = 19.88% 17-Nov-2025 00h to 24-Nov-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503497 30105 PSR J1101-6101 30.0 165.438 -61.028 101.1 93.6 62.3 64.5 ACIS-I 4 0 NONE Kargaltsev GO 26 0 Y N N N N N N N approval not required 25500121 601705 29895 VV 114 17.0 16.947 -17.507 314.9 310.6 129.8 123.7 HRC-I - - NONE Kuczek GO 26 0 N N N N N N N N kashyap 07/06/25 26620288 705242 29954 WISE J121857.42+1035 27.1 184.739 10.598 57.9 59.9 55.2 62.1 ACIS-S 3 0 NONE Pfeifle GO 26 0 Y N N N N N N N malgosia 10/28/24 26700211 802216 30034 ACT-CL J2317.7-3648 12.0 349.433 -36.812 301.8 298.2 98.8 92.7 ACIS-S 3 0 NONE Flores GO 26 0 N N N N N N N N bradw 10/10/24 26800300 Segment: 41 limit: 5.03d, used 0.69d = 13.72% 24-Nov-2025 00h to 01-Dec-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402596 30504 Vela X-1 15.0 135.529 -40.555 65.7 59.9 86.7 90.9 ACIS-S 5 2 HETG Huenemoerder GTO 26 0 N N Y N N N N N hermanm 12/02/24 26400492 503579 30543 SN 2012au 15.0 193.717 -10.247 71.3 70.3 45.1 52.1 HRC-I - - NONE Patnaude GTO 26 0 N N N N N N N N kashyap 12/17/24 26500499 705225 29937 NGC 1358 30.0 53.415 -5.090 347.2 334.4 153.8 150.1 ACIS-S 5 1 NONE Marchesi GO 26 0 S N N N N Y Y N kashyap 03/31/25 26700102 Segment: 42 limit: 4.84d, used 1.86d = 38.43% 01-Dec-2025 00h to 08-Dec-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201574 26967 XI BOO 5.0 222.848 19.100 31.0 37.9 47.1 52.0 HRC-I - - NONE Ayres GO 26 0 S N N N N Y N N kashyap 10/15/22 24200057 201820 30521 zeta Tau 50.0 84.411 21.143 84.6 78.5 163.7 170.7 ACIS-S 6 2 HETG Gunderson GTO 26 0 N N Y N N N N N nss 06/12/25 26200483 291773 29541 ArLac 5.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 Y N N Y N N N N not approved 26200479 291774 29542 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291775 29543 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291776 29544 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291777 29545 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291778 29546 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291779 29547 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291780 29548 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291781 29549 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291782 29550 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291783 29551 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291784 29552 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291785 29553 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291786 29554 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291787 29555 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291788 29556 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291789 29557 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291790 29558 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291791 29559 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291792 29560 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 291793 29561 ArLac 1.0 332.170 45.743 288.7 294.5 102.3 98.0 HRC-I - - NONE Jerius CAL 26 0 G N N Y N N N N not approved 26200479 402584 30050 EXO 0748-676 30.0 117.140 -67.752 46.0 38.9 83.2 84.2 ACIS-S 3 1 NONE Homan TOO 26 0 S N N N N Y N N malgosia 05/01/25 26400303 503503 28359 GW170817 30.0 197.450 -23.381 81.9 78.7 45.4 52.1 ACIS-S 5 3 NONE Troja GO 26 1 Y N N N N N N N jeanconn 11/27/23 25510368 705244 29956 SDSS J101756.75+3448 22.3 154.487 34.814 73.1 76.1 104.1 110.6 ACIS-S 2 0 NONE Pfeifle GO 26 0 N N N N N N N N malgosia 10/28/24 26700211 Segment: 43 limit: 5.19d, used 0.47d = 9.06% 08-Dec-2025 00h to 15-Dec-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503503 30111 GW170817 30.0 197.450 -23.381 78.7 76.0 52.1 58.9 ACIS-S 5 3 NONE Troja GO 26 0 Y N N N N N N N approval not required 25510368 705283 29995 ASASSN-14ko 10.0 81.326 -46.006 6.8 359.2 111.0 110.7 ACIS-S 4 0 NONE Auchettl GO 26 0 Y N N N N Y N N malgosia 04/07/25 26700325 Segment: 44 limit: 4.91d, used 0.52d = 10.59% 15-Dec-2025 00h to 22-Dec-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402591 30499 Vela X-1 15.0 135.529 -40.555 48.3 42.3 99.2 103.2 ACIS-S 5 2 HETG Huenemoerder GTO 26 0 N N Y N N N N N hermanm 12/02/24 26400492 503503 30115 GW170817 30.0 197.450 -23.381 76.0 73.7 58.9 65.7 ACIS-S 5 3 NONE Troja GO 26 0 Y N N N N N N N approval not required 25510368 Segment: 45 limit: 4.86d, used 1.19d = 24.49% 22-Dec-2025 00h to 29-Dec-2025 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402598 30506 Vela X-1 15.0 135.529 -40.555 42.3 36.1 103.2 107.1 ACIS-S 5 2 HETG Huenemoerder GTO 26 0 N N Y N N N N N hermanm 12/02/24 26400492 503541 29826 SN 1986J 15.0 35.631 42.332 265.0 270.2 131.6 125.7 ACIS-S 4 2 NONE Dwarkadas GO 26 0 S N N N N Y N N jeanconn 11/01/24 26500236 601652 H 29657 NGC4536 34.0 188.613 2.188 66.0 66.7 82.9 90.0 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 705284 29996 ASASSN-14ko 40.0 81.326 -46.006 351.6 344.1 110.1 109.1 ACIS-S 4 0 NONE Auchettl GO 26 0 S N N N N Y N N malgosia 04/07/25 26700325 Segment: 46 limit: 5.28d, used 1.63d = 30.87% 29-Dec-2025 00h to 05-Jan-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 601652 H 30169 NGC4536 30.0 188.613 2.188 66.7 67.4 90.0 97.1 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 705226 29938 NGC 1358 30.0 53.415 -5.090 305.2 300.9 128.3 122.1 ACIS-S 5 1 NONE Marchesi GO 26 0 S N N N N Y Y N kashyap 03/31/25 26700102 705287 29999 2MASX J01110461-4558 50.0 17.769 -45.979 293.3 287.8 80.0 75.4 ACIS-S 4 0 NONE Lin GO 26 0 S N N N N Y N N malgosia 03/31/25 26700329 705287 30226 2MASX J01110461-4558 30.0 17.769 -45.979 293.3 287.8 80.0 75.4 ACIS-S 4 0 NONE Lin GO 26 0 S N N N N Y N N malgosia 03/31/25 26700329 Segment: 47 limit: 4.88d, used 0.70d = 14.34% 05-Jan-2026 00h to 12-Jan-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503548 29833 SN2025sei 50.0 267.248 25.496 21.6 30.2 51.3 53.5 ACIS-S 2 0 NONE Chornock TOO 26 0 S N N N N Y N N malgosia 08/12/25 26500247 705285 29997 ASASSN-14ko 10.0 81.326 -46.006 336.7 329.4 107.9 106.3 ACIS-S 4 0 NONE Auchettl GO 26 0 S N N N N Y N N malgosia 04/07/25 26700325 Segment: 49 limit: 5.28d, used 0.35d = 6.63% 19-Jan-2026 00h to 26-Jan-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503497 30107 PSR J1101-6101 30.0 165.438 -61.028 41.3 35.3 90.9 94.6 ACIS-I 4 0 NONE Kargaltsev GO 26 0 Y N N N N N N N approval not required 25500121 Segment: 51 limit: 4.82d, used 0.16d = 3.32% 02-Feb-2026 00h to 09-Feb-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 705286 29998 ASASSN-14ko 14.0 81.326 -46.006 308.3 301.5 100.4 98.1 ACIS-S 4 0 NONE Auchettl GO 26 0 S N N N N Y N N malgosia 04/07/25 26700325 Segment: 52 limit: 5.25d, used 0.81d = 15.43% 09-Feb-2026 00h to 16-Feb-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402579 29797 Cir X-1 55.0 230.171 -57.167 80.1 75.7 78.6 84.2 ACIS-S 4 0 HETG Schulz GO 26 0 N N Y N N N N N nss 06/12/25 26400427 503542 29827 SN 1986J 15.0 35.631 42.332 292.1 295.3 88.2 81.9 ACIS-S 4 2 NONE Dwarkadas GO 26 0 S N N N N Y N N jeanconn 11/01/24 26500236 Segment: 58 limit: 5.14d, used 0.17d = 3.31% 23-Mar-2026 00h to 30-Mar-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503543 29828 SN 1986J 15.0 35.631 42.332 314.6 320.2 51.5 45.9 ACIS-S 4 2 NONE Dwarkadas GO 26 0 S N N N N Y N N jeanconn 11/01/24 26500236 Segment: 63 limit: 5.28d, used 0.64d = 12.12% 27-Apr-2026 00h to 04-May-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201568 26961 WR 25 55.0 161.043 -59.720 296.5 288.8 119.9 118.7 ACIS-S 6 2 HETG Huenemoerder GO 26 0 N N Y N N N N N nss 10/17/22 24200045 Segment: 71 limit: 4.91d, used 0.17d = 3.46% 22-Jun-2026 00h to 29-Jun-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503544 29829 SN 1986J 15.0 35.631 42.332 85.0 90.0 48.6 54.1 ACIS-S 4 2 NONE Dwarkadas GO 26 0 S N N N N Y N N jeanconn 11/01/24 26500236 Segment: 79 limit: 4.72d, used 0.17d = 3.60% 17-Aug-2026 00h to 24-Aug-2026 00h (UT) seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 503545 29830 SN 1986J 15.0 35.631 42.332 113.8 116.9 95.3 101.3 ACIS-S 4 2 NONE Dwarkadas GO 26 0 S N N N N Y N N jeanconn 11/01/24 26500236seq# obs name time RA dec Roll Range Pitch Range SI R O grat observer Type AO OR# TC RC PC UC PU SC Mlt CRem Approved Proposal# ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 402541 P 29759 1eRASS J112950.4+354 2.2 172.460 35.784 0.0 0.0 0.0 0.0 ACIS-S 3 0 NONE Zhao GO 26 0 N N N N N N N N swolk 10/16/24 26400131 402542 P 29760 1eRASS J120806.9+291 1.9 182.029 29.286 0.0 0.0 0.0 0.0 ACIS-S 3 0 NONE Zhao GO 26 1 N N N N N N N N swolk 10/16/24 26400131 503552 P 29837 PSR J1459-6053 30.0 224.876 -60.889 0.0 0.0 0.0 0.0 ACIS-I 4 0 NONE Romani GO 26 0 N N N N N N N N jeanconn 10/17/24 26500294 601641 H 30156 NGC2775 30.0 137.584 7.038 0.0 0.0 0.0 0.0 ACIS-S 5 1 NONE Mathur CLP 25 0 N N N N N N N N bradw 11/18/24 25628968 601657 H 29662 NGC4689 32.0 191.940 13.763 0.0 0.0 0.0 0.0 ACIS-S 4 0 NONE Mathur CLP 25 0 N N N N N N N N bradw 12/22/24 25628968 601671 P 29861 AM0322-374 25.0 50.978 -37.510 0.0 0.0 0.0 0.0 ACIS-S 4 2 NONE Fruscione GO 26 0 N N N N N N N N waaron 12/07/24 26620058 601691 P 29881 SDSS J122558.56+0428 23.0 186.494 4.474 0.0 0.0 0.0 0.0 ACIS-S 4 2 NONE Lehmer GO 26 0 N N N N N N N N waaron 10/16/24 26620185 601692 P 29882 SDSS J125354.49+2624 27.0 193.477 26.410 0.0 0.0 0.0 0.0 ACIS-S 4 2 NONE Lehmer GO 26 0 N N N N N N N N waaron 10/16/24 26620185 601693 P 29883 SDSS J152322.13+1241 28.0 230.842 12.693 0.0 0.0 0.0 0.0 ACIS-S 4 2 NONE Lehmer GO 26 0 N N N N N N N N waaron 10/16/24 26620185 601698 P 29888 NGVS J124352.48+1125 20.0 190.968 11.426 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Dage GO 26 0 N N N N N N N N waaron 10/25/24 26620188 601699 P 29889 NGVS J122636.42+1255 20.0 186.652 12.920 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Dage GO 26 0 N N N N N N N N waaron 10/25/24 26620188 705200 P 29912 SDSS J162501.98+4309 30.0 246.258 43.159 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Li GO 26 0 N N N N N N N N not approved 26700041 705220 P 29932 SDSS J155007.62+2728 18.8 237.533 27.471 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N kashyap 03/11/25 26700090 705221 P 29933 SDSS J134234.31+1913 6.0 205.643 19.227 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N kashyap 03/11/25 26700090 705223 P 29935 SDSS J161517.25+3058 17.2 243.822 30.976 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Foord GO 26 0 N N N N N N N N kashyap 03/11/25 26700090 705232 P 30212 8C 1435+638 23.4 219.191 63.611 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Ighina GO 26 0 N N N N N N N N malgosia 10/11/24 26700199 705247 P 29959 2MASS J09270013+1900 16.0 141.750 19.008 0.0 0.0 0.0 0.0 ACIS-S 3 0 NONE Pfeifle GO 26 0 N N N N N N N N malgosia 11/19/24 26700211 705250 P 29962 AKARI-IRC-V1 J175700 30.0 269.251 59.133 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Chen GO 26 0 N N N N N N N N malgosia 03/24/25 26700215 705270 P 29982 IIZW083 27.0 306.733 -2.278 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE CAGLAR GO 26 0 N N N N N N N N malgosia 03/24/25 26700302 705275 P 29987 NGC 2110 28.0 88.047 -7.456 0.0 0.0 0.0 0.0 ACIS-S 2 0 HETG Miller GO 26 0 N N N N N N N N hermanm 04/30/25 26700317 705299 P 30011 GAMA2258819 18.0 30.874 -9.491 0.0 0.0 0.0 0.0 ACIS-S 2 0 NONE Reines GO 26 0 N N N N N N N N malgosia 02/10/25 26700402 Pool Targets
seq# obsid target SI grat observer old LTS bin new LTS bin ------------------------------------------------------------------------------------------------ 503454 28051 PSR J2229+6114 ACIS-I NONE Halpern 22-Sep-2025 --> 06-Oct-2025 402536 P 29754 1eRASS J025933.4-120 ACIS-S NONE Zhao unscheduled --> 01-Sep-2025 601674 29864 AM0425-421 ACIS-S NONE Fruscione 06-Oct-2025 --> unscheduled 601677 29867 AM1006-380 ACIS-S NONE Fruscione 29-Sep-2025 --> unscheduled 601688 29878 SDSS J141525.26+0456 ACIS-S NONE Lehmer 01-Sep-2025 --> unscheduled 705207 29919 SDSS J143154.09+2156 ACIS-S NONE Foord 01-Sep-2025 --> unscheduled 402527 29745 AT2025ulz ACIS-S NONE O'Connor (not in lts) --> 01-Sep-2025 402528 29746 AT2025ulz ACIS-S NONE O'Connor (not in lts) --> 29-Sep-2025 802183 31473 SPT-CL J2305-2248 ACIS-I NONE Kraft (not in lts) --> 01-Sep-2025 705486 C 31477 SDSSJ095613.48+54590 ACIS-S NONE Civano (not in lts) --> 01-Sep-2025 705487 C 31478 SDSSJ230906.96-10083 ACIS-S NONE Civano (not in lts) --> 01-Sep-2025 601615 31479 NGC1385 ACIS-S NONE Lehmer (not in lts) --> 01-Sep-2025 201666 31480 G29-38 HRC-I NONE Cunningham (not in lts) --> 01-Sep-2025 802183 31481 SPT-CL J2305-2248 ACIS-I NONE Kraft (not in lts) --> 01-Sep-2025 601640 H 31482 NGC2566 ACIS-S NONE Mathur (not in lts) --> 01-Sep-2025 601640 H 31483 NGC2566 ACIS-S NONE Mathur (not in lts) --> 01-Sep-2025 402527 31484 AT2025ulz ACIS-S NONE O'Connor (not in lts) --> 01-Sep-2025 402527 31485 AT2025ulz ACIS-S NONE O'Connor (not in lts) --> 01-Sep-2025 705233 31486 WISE J2246-0526 ACIS-S NONE Fernández Aranda (not in lts) --> 01-Sep-2025 705488 31487 NEXUS ACIS-I NONE Zhao (not in lts) --> 22-Sep-2025 LTS changes
| Column | Definition |
|---|---|
seq# | Sequence number |
obs | Observation ID |
name | Target name |
time | Approved time (ksec.) |
RA | Right ascension (deg., J2000) |
dec | Declination (deg., J2000) |
Roll range | Roll angles at start and end of two-week bin |
Pitch range | Pitch angles at start and end of two-week bin |
SI | Science Instrument |
R | Requested chip count (ACIS only) |
O | Optional chip count (ACIS only) |
grat | Grating |
observer | Observer |
Type | Observation type (GO, GTO, TOO, DDT, CAL) |
AO | Cycle (announcement of opportunity) number |
OR# | Number of times displaced from a previous short-term schedule |
TC | Time constraint |
RC | Roll constraint |
PC | Phase constraint |
UC | Uninterrupt constraint |
PU | Pointing update constraint |
SC | Split interval constraint |
Mlt | Multiple telescopes (coordination constraint) |
CRem | Constraint in remarks |
Approved | Flight approval status |
Proposal # | Proposal number |
Possible constraint flags are (Y)es, (P)reference, (N)o. Time constraints may have (S)eries flags for monitoring observations, (G)roup flags for grouped observations, or (R)esponse window flags for TOOs and DDTs.
Last modified: 08/27/25
 |
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. |