Chandra X-Ray Observatory
	(CXC)

Short-term Schedule

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.

SEP2820C


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     46916       CAL-ER (PER01) 2020:272:05:30:14.454  16.0   --    --    0.0000   6.0000 231.28 173.79  57.33   
 ----     46915       CAL-ER (PER14) 2020:272:10:24:38.239   1.0   --    --    5.0000  30.0000 180.01 152.17  55.03   
 ----     46914       CAL-ER (PER03) 2020:272:11:20:35.609   1.0   --    --   32.0000  -6.0000  73.87 151.86 107.05   
 ----     46913       CAL-ER (CTI01) 2020:272:13:07:16.789   3.0   --    --  136.7000 -17.7000 102.44  49.92 102.05   
704254    24662 0            Mrk 279 2020:272:16:18:57.785  32.0 ACIS-S HETG 208.1937  69.3066 338.07  73.27 120.06 dss pspc rass
291544    24644 3              ArLac 2020:273:01:39:59.578  10.2  HRC-I NONE 332.1784  45.7624 224.05 127.78  57.88 dss pspc rass
704127 P1 23715 0            NGC7674 2020:273:04:56:55.577   2.0 ACIS-S NONE 351.9856   8.8023 245.96 165.00  51.07 dss pspc rass
704003    22618 0            PS16dtm 2020:273:06:21:52.782  20.0 ACIS-S NONE  29.5266  -0.8949  81.77 155.96 162.54 dss pspc rass
704121 P1 23709 0        KUG0003+199 2020:273:12:35:26.313   2.0 ACIS-S NONE   1.6007  20.2180 194.15 161.90 111.26 dss pspc rass
704254    24665 0            Mrk 279 2020:273:13:43:56.113  23.0 ACIS-S HETG 208.1974  69.3066 338.06  73.52  88.49 dss pspc rass
704220    23808 0             NGC678 2020:273:20:42:57.551  39.0 ACIS-S NONE  27.3774  21.9904 136.99 151.90  90.86 dss pspc rass
704254    24666 0            Mrk 279 2020:274:08:08:38.989  23.0 ACIS-S HETG 208.1984  69.3067 338.06  73.72  90.86 dss pspc rass
704220    24668 0             NGC678 2020:274:15:07:40.427  11.1 ACIS-S NONE  27.3770  21.9905 136.99 152.61  90.86 dss pspc rass
 ----     46912       CAL-ER (CTI02) 2020:274:18:39:16.620   1.0   --    --   10.0000   3.4000  95.93 177.13  51.17   
 ----     46911       CAL-ER (PER02) 2020:274:19:37:07.191   3.0   --    --    5.2000   6.3000 211.80 176.25 115.54   
 ----     46910       CAL-ER (PER04) 2020:274:21:45:00.000   1.0   --    --    9.0000   5.9000 147.83 176.74  63.66   
 ----     46909       CAL-ER (PER05) 2020:274:22:45:00.000   2.0   --    --   80.0000  70.0000 105.27  98.81  78.82   
 ----     46908       CAL-ER (PER12) 2020:274:23:51:19.644   1.0   --    --    9.0000   5.9000 148.64 176.79  78.72   
 ----     46907       CAL-ER (PER08) 2020:275:02:40:00.000   1.0   --    --  145.0000  30.0000  58.24  52.39 125.11   
 ----     46906       CAL-ER (CTI06) 2020:275:04:36:10.863   3.0   --    --  188.0000 -55.8000 180.65  52.56 132.84   
704243    23831 0         J0038-1527 2020:275:07:45:09.178  26.0 ACIS-S NONE   9.6259 -15.4664 356.99 161.13 108.84 dss pspc rass
704002    22617 0         SPT0348-62 2020:275:15:27:37.024  49.0 ACIS-I NONE  57.2536 -62.3713  53.00 104.38  61.34 dss pspc rass
704243    24669 0         J0038-1527 2020:276:05:33:24.876  27.0 ACIS-S NONE   9.6282 -15.4655 356.99 160.82  61.34 dss pspc rass
402178    22414 2             gx 5-1 2020:276:13:41:59.377  20.0 ACIS-S HETG 270.2848 -25.0559 257.00  80.74 103.84 dss pspc rass
704243    24276 0         J0038-1527 2020:276:19:53:53.879  23.0 ACIS-S NONE   9.6282 -15.4655 356.99 160.61 103.84 dss pspc rass
704141 P1 23729 0             KAZ320 2020:277:03:02:00.489   2.0 ACIS-S NONE 344.8926  24.9413 232.16 148.60 131.75 dss pspc rass
704254    24667 0            Mrk 279 2020:277:04:09:15.966  22.7 ACIS-S HETG 208.1975  69.3067 338.06  74.48  82.91 dss pspc rass
 ----     46905       CAL-ER (CTI04) 2020:277:10:56:13.476   3.0   --    --  145.0000  30.0000  59.17  54.59  59.30   
 ----     46904       CAL-ER (PER09) 2020:277:15:45:00.000   3.0   --    --   12.4000   6.9000 135.53 176.21 121.49   
 ----     46903       CAL-ER (PER13) 2020:277:18:00:00.000   1.0   --    --  145.2000  25.3000  62.15  52.39 124.10   
 ----     46902       CAL-ER (CTI05) 2020:277:20:03:19.288   3.0   --    --  188.1000 -56.8000 177.76  52.55 125.49   
704243    24275 0         J0038-1527 2020:277:23:14:17.662  25.0 ACIS-S NONE   9.6277 -15.4657 356.99 160.21 107.76 dss pspc rass
201285    22316 0       Westerlund 1 2020:278:06:48:45.599  40.0 ACIS-I NONE 251.7469 -45.8331 245.00  67.20 100.35 dss pspc rass


SEP2120A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     46937       CAL-ER (PER01) 2020:264:07:35:32.463   3.0   --    --  131.7675 -13.1257 103.65  47.70 157.68   
 ----     46936       CAL-ER (PER04) 2020:264:09:07:43.423   3.0   --    --   10.4865  -1.8352  86.26 167.27 120.07   
 ----     46935       CAL-ER (PER02) 2020:264:10:22:42.026   1.0   --    --    7.7219 -11.2047  44.47 165.79  42.56   
 ----     46934       CAL-ER (CTI01) 2020:264:14:52:58.622   3.0   --    --    7.0000  10.0000 139.91 165.90  97.21   
402282    24651 0      AT2019wey/SRG 2020:264:17:59:11.891  25.0 ACIS-S HETG  68.8745  55.3589 106.44 100.10  66.18 dss pspc rass
 ----     46933       CAL-ER (IAT03) 2020:265:01:30:24.620   0.9   --    --  282.9434  36.3284 260.68 101.30  85.70   
801917    24277 0         Abell 2495 2020:265:02:14:48.370  21.0 ACIS-S NONE 342.5838  10.9258 240.00 160.48  59.46 dss pspc rass
901417    21651 0        JWST-DTDF-8 2020:265:08:38:27.346  20.0 ACIS-I NONE 260.7305  65.8703 272.02  86.28  81.67 dss pspc rass
801917    24279 0         Abell 2495 2020:265:14:45:26.327  18.0 ACIS-S NONE 342.5837  10.9251 240.00 160.23  81.67 dss pspc rass
901417    24655 0        JWST-DTDF-8 2020:265:20:19:05.304  14.0 ACIS-I NONE 260.7311  65.8698 272.02  86.28  81.67 dss pspc rass
 ----     46932       CAL-ER (IAT01) 2020:266:00:33:16.336   0.9   --    --  267.5141  40.1262 270.88  88.51  26.40   
201366    24257 0             G29-38 2020:266:01:23:01.944  25.0 ACIS-S NONE 352.1982   5.2700 245.00 171.03  83.60 dss pspc rass
 ----     46931       CAL-ER (CAL01) 2020:266:08:53:46.203   0.9   --    --  267.4931  40.1452 271.21  88.33  83.57   
901417    24656 0        JWST-DTDF-8 2020:266:09:30:18.808  14.3 ACIS-I NONE 260.7301  65.8705 272.02  86.27  26.43 dss pspc rass
 ----     46930       CAL-ER (CTI02) 2020:266:13:52:49.907  20.0   --    --  206.9913  42.4659 322.62  48.95  37.72   
 ----     46929       CAL-ER (PER12) 2020:266:20:07:33.091   1.0   --    --  356.4560  14.6457 193.74 164.95 116.49   
 ----     46928       CAL-ER (PER06) 2020:266:21:07:50.643   6.0   --    --   18.0515  -7.5445  67.96 160.50 126.57   
 ----     46927       CAL-ER (PER05) 2020:266:23:28:05.139  15.0   --    --  135.4170 -23.9817 112.27  49.48 111.34   
 ----     46926       CAL-ER (PER07) 2020:267:04:19:30.833   3.0   --    --   12.9780  -5.5883  66.17 166.09 116.68   
 ----     46925       CAL-ER (CTI03) 2020:267:06:10:48.669   3.0   --    --    7.7062  -9.9138  36.48 167.54  29.74   
704002    22616 0         SPT0348-62 2020:267:09:21:44.773  48.0 ACIS-I NONE  57.2540 -62.3691  52.06 104.51  65.62 dss pspc rass
503246 P1 23571 0          SN 2009em 2020:267:23:12:15.780  12.0 ACIS-S NONE   8.6771  -8.4189  41.28 168.25  67.58 dss pspc rass
201366    24256 0             G29-38 2020:268:03:22:29.053  15.0 ACIS-S NONE 352.1982   5.2702 245.00 169.92 156.25 dss pspc rass
801839    24639 0          H1821+643 2020:268:08:07:35.495  34.0 ACIS-S NONE 275.4681  64.3488 258.02  92.36  88.23 dss pspc rass
201366    24658 0             G29-38 2020:268:18:09:21.942  15.0 ACIS-S NONE 352.1982   5.2698 245.00 169.52  88.23 dss pspc rass
801819    24629 0         Abell 2345 2020:268:22:46:51.528  12.0 ACIS-I NONE 321.8398 -12.1272 285.00 138.20  53.97 dss pspc rass
402149    22384 1  3FGL J1528.3-5836 2020:269:02:40:15.883  13.0 ACIS-S NONE 232.0799 -58.5658 234.88  69.62  80.58 dss pspc rass
801819    24660 0         Abell 2345 2020:269:06:50:20.236  16.1 ACIS-I NONE 321.8401 -12.1275 285.00 137.86  80.58 dss pspc rass
 ----     46924       CAL-ER (CTI04) 2020:269:11:44:56.589   7.0   --    --  355.5899  -8.6380 324.76 168.19  46.93   
 ----     46923       CAL-ER (PER09) 2020:269:14:15:29.546   9.0   --    --  265.3197 -60.2926 264.31  85.53  82.72   
 ----     46922       CAL-ER (PER10) 2020:269:17:20:17.840   3.0   --    --  358.7253  -5.5420 329.88 172.32  86.87   
 ----     46921       CAL-ER (CTI05) 2020:269:18:54:25.550   3.0   --    --  359.0370  10.2594 201.56 170.21 128.83   
 ----     46920       CAL-ER (CTI06) 2020:269:20:27:08.655   3.0   --    --  206.2744  41.5264 327.26  47.75 122.48   
 ----     46919       CAL-ER (CAL01) 2020:269:21:37:51.334   3.0   --    --  206.2744  41.5264 327.32  47.75   0.06   
 ----     46918       CAL-ER (PER11) 2020:269:23:02:11.237   1.0   --    --  133.7425  22.2373  70.47  53.21  84.74   
801891    22721 0    ZwCl1447.2+2619 2020:270:00:48:49.334  28.0 ACIS-I NONE 222.3725  26.0833 299.39  46.93 112.39 dss pspc rass
801917    24659 0         Abell 2495 2020:270:09:15:41.058  10.0 ACIS-S NONE 342.5838  10.9263 240.00 157.48 111.13 dss pspc rass
801839    24641 0          H1821+643 2020:270:12:34:44.237  25.0 ACIS-S NONE 275.4679  64.3492 258.02  92.27  75.99 dss pspc rass
201366    23379 0             G29-38 2020:270:20:06:30.681  26.5 ACIS-S NONE 352.1982   5.2704 245.00 168.10  88.23 dss pspc rass
704178 P1 23766 0     SDSSJ1550+0806 2020:271:04:08:57.050  17.3 ACIS-S NONE 237.7275   8.1336 277.97  54.62 113.73 dss pspc rass
201366    24657 0             G29-38 2020:271:09:38:03.413  26.0 ACIS-S NONE 352.1982   5.2721 245.00 167.67 113.73 dss pspc rass
801839    24661 0          H1821+643 2020:271:17:26:29.859  10.0 ACIS-S NONE 275.4669  64.3509 258.02  92.22  88.23 dss pspc rass
801819    21536 0         Abell 2345 2020:271:20:50:15.125  20.0 ACIS-I NONE 321.8382 -12.1254 285.00 135.34  97.15 dss pspc rass
 ----     46917       CAL-ER (CTI07) 2020:272:02:43:57.996   3.0   --    --  344.0000  -4.0000 285.96 158.41  23.48   


Previous weeks' short-term schedules.

Last modified: 09/25/20



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