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.

MAR3020A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     47340       CAL-ER (PER02) 2020:089:18:54:57.119   3.0   --    --  350.0000 -40.3000 154.39  47.13  69.53   
 ----     47339       CAL-ER (PER01) 2020:089:23:00:00.000   3.0   --    --  192.0000  -9.0000  32.30 173.80 126.87   
 ----     47338       CAL-ER (CAL01) 2020:090:02:00:54.460   2.0   --    --  189.3000  -0.7000 177.00 176.87 145.03   
201227    21173 0            NGC 884 2020:090:03:46:32.460  17.0 ACIS-I NONE  35.4631  57.1279 329.03  57.31 120.70 dss pspc rass
201235    22956 0             Gd 394 2020:090:08:56:36.679  60.0  HRC-S LETG 318.1834  50.0840  60.44  62.89  50.57 dss pspc rass
801867    22634 0           1321+045 2020:091:02:15:11.437  30.0 ACIS-S NONE 201.1017   4.3101 128.50 165.85 103.86 dss pspc rass
801856    21710 0 24P73B NVSS J221736+ 2020:091:11:14:49.344  10.0 ACIS-I NONE 334.3862  59.7180  47.01  61.78 108.59 dss pspc rass
201227    23202 0            NGC 884 2020:091:14:26:46.344  54.1 ACIS-I NONE  35.4642  57.1278 329.03  56.43  39.34 dss pspc rass
 ----     47337       CAL-ER (CTI03) 2020:092:06:11:22.186   2.0   --    --  189.3000  -0.7000 200.43 175.83 119.89   
 ----     47336       CAL-ER (CAL01) 2020:092:08:00:00.000   3.0   --    --  192.0000  -9.0000  15.07 175.49 174.43   
 ----     47335       CAL-ER (CAL01) 2020:092:12:00:00.000   3.0   --    --  350.0000 -40.0000 151.65  48.71 127.00   
 ----     47334       CAL-ER (CAL01) 2020:092:15:00:00.000   3.0   --    --  192.0000  -9.0000  11.82 175.68 127.09   
 ----     47333       CAL-ER (CAL01) 2020:092:17:23:51.887   2.0   --    --  189.1000   2.9000 195.33 172.01 176.36   
201227    23203 0            NGC 884 2020:092:19:16:14.112  16.0 ACIS-I NONE  35.4610  57.1280 329.03  55.65 116.31 dss pspc rass
201298    23012 0 Orion Nebula Cluster 2020:093:00:17:59.201  11.0 ACIS-S HETG  83.8158  -5.3645 251.00  72.95  88.13 dss pspc rass
703777    21482 0          Spiderweb 2020:093:03:58:08.474  35.0 ACIS-S NONE 175.1966 -26.4960 323.70 153.35  95.95 dss pspc rass
201298    23206 0 Orion Nebula Cluster 2020:093:14:18:17.737  18.0 ACIS-S HETG  83.8159  -5.3656 251.00  72.45  95.94 dss pspc rass
703777    22927 0          Spiderweb 2020:093:19:55:07.011  33.0 ACIS-S NONE 175.1979 -26.4962 323.70 153.20  95.95 dss pspc rass
503203    23209 1         J1818-1607 2020:094:05:48:53.159  30.0 ACIS-S NONE 274.5186 -16.1465 111.60  99.23 127.21 dss pspc rass
703777    23205 0          Spiderweb 2020:094:14:52:39.295  24.0 ACIS-S NONE 175.2000 -26.4966 323.70 153.04 127.21 dss pspc rass
 ----     47332       CAL-ER (CTI04) 2020:094:21:54:10.858   2.0   --    --  187.7000  -8.8000 305.00 173.71  30.92   
 ----     47331       CAL-ER (CAL01) 2020:095:00:00:00.000   3.0   --    --  193.6600 -10.7200   4.55 174.93  58.84   
 ----     47330       CAL-ER (CAL01) 2020:095:02:00:00.000   3.0   --    --  349.9000 -40.3000 149.30  50.81 124.98   
 ----     47329       CAL-ER (CAL01) 2020:095:05:00:00.000   3.0   --    --  193.8000 -10.0000   4.55 175.75 125.64   
 ----     47328       CAL-ER (PER03) 2020:095:07:30:00.000   1.0   --    --  350.0000 -40.0000 149.06  50.69 125.93   
 ----     47327       CAL-ER (CAL01) 2020:095:08:56:21.616   2.0   --    --   60.0000  -2.0000 260.13  46.96 105.14   
201270    22300 0    120751.8-043439 2020:095:12:07:19.733  24.5 ACIS-S NONE 181.9560  -4.5552 268.00 168.18 121.67 dss pspc rass
201298    23207 0 Orion Nebula Cluster 2020:095:19:32:53.321  15.0 ACIS-S HETG  83.8158  -5.3647 251.00  70.57  97.77 dss pspc rass
703739    21442 0       2M 1134-2103 2020:096:00:18:39.134  30.0 ACIS-S NONE 173.6457 -21.0439 304.03 155.05  91.19 dss pspc rass
201298    23208 0 Orion Nebula Cluster 2020:096:09:14:24.943  15.0 ACIS-S HETG  83.8158  -5.3651 251.00  70.08  91.19 dss pspc rass
601495    22957 0          H1821+643 2020:096:14:07:59.694  15.0  HRC-S LETG 275.5207  64.3271 101.01  88.34 126.36 dss pspc rass
801867    23204 0           1321+045 2020:096:18:51:23.316  26.0 ACIS-S NONE 201.1033   4.3137 139.00 167.71  80.52 dss pspc rass


MAR2320B


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
291565    22772 3              ArLac 2020:083:01:29:09.805   5.0  HRC-I NONE 332.1594  45.7224  39.75  52.02 114.30 dss pspc rass
291569    22776 2              ArLac 2020:083:03:04:33.860   1.0  HRC-I NONE 332.1296  45.7503  35.03  52.06   4.74 dss pspc rass
291570    22777 2              ArLac 2020:083:03:29:43.860   1.0  HRC-I NONE 332.0904  45.7312  35.06  52.06   0.03 dss pspc rass
291572    22779 2              ArLac 2020:083:03:54:53.860   1.0  HRC-I NONE 332.2234  45.7148  34.96  51.99   0.09 dss pspc rass
291577    22784 2              ArLac 2020:083:04:27:26.455   1.0  HRC-I NONE 332.0654  45.6483  47.07  52.01  12.00 dss pspc rass
291566    22773 2              ArLac 2020:083:04:57:33.541   1.0  HRC-I NONE 332.1228  45.7008  40.03  52.03   7.00 dss pspc rass
291567    22774 2              ArLac 2020:083:05:22:43.541   1.0  HRC-I NONE 332.1900  45.6967  39.99  52.00   0.05 dss pspc rass
291568    22775 2              ArLac 2020:083:05:47:53.541   1.0  HRC-I NONE 332.1959  45.7436  39.98  52.03   0.05 dss pspc rass
291571    22778 2              ArLac 2020:083:06:13:03.541   1.0  HRC-I NONE 332.1535  45.6752  40.01  52.00   0.07 dss pspc rass
291573    22780 2              ArLac 2020:083:06:38:13.541   1.0  HRC-I NONE 332.1652  45.7691  40.00  52.07   0.09 dss pspc rass
291574    22781 2              ArLac 2020:083:07:03:23.541   1.0  HRC-I NONE 332.0979  45.7732  40.05  52.10   0.05 dss pspc rass
291575    22782 2              ArLac 2020:083:07:28:33.541   1.0  HRC-I NONE 332.0671  45.7987  40.07  52.14   0.03 dss pspc rass
291576    22783 2              ArLac 2020:083:07:53:43.541   1.0  HRC-I NONE 332.0862  45.6792  40.06  52.04   0.12 dss pspc rass
291578    22785 2              ArLac 2020:083:08:18:53.541   1.0  HRC-I NONE 332.2206  45.6710  39.96  51.97   0.09 dss pspc rass
291579    22786 2              ArLac 2020:083:08:44:03.541   1.0  HRC-I NONE 332.2513  45.6455  39.94  51.94   0.03 dss pspc rass
291580    22787 2              ArLac 2020:083:09:09:13.541   1.0  HRC-I NONE 332.2325  45.7649  39.96  52.04   0.12 dss pspc rass
291581    22788 2              ArLac 2020:083:09:34:23.541   1.0  HRC-I NONE 332.2691  45.7863  39.93  52.04   0.03 dss pspc rass
291582    22789 2              ArLac 2020:083:09:59:33.541   1.0  HRC-I NONE 332.1888  45.9569  39.99  52.21   0.18 dss pspc rass
291583    22790 2              ArLac 2020:083:10:24:43.541   1.0  HRC-I NONE 331.8228  45.7421  40.25  52.21   0.33 dss pspc rass
291584    22791 2              ArLac 2020:083:10:49:53.541   1.0  HRC-I NONE 332.1300  45.4873  40.03  51.88   0.33 dss pspc rass
291585    22792 2              ArLac 2020:083:11:15:03.541   1.0  HRC-I NONE 332.4955  45.7011  39.77  51.88   0.33 dss pspc rass
703828    21700 0                M87 2020:083:12:12:31.577   5.0  HRC-I NONE 187.7276  12.3947 159.93 165.59 113.85 dss pspc rass
 ----     47359       CAL-ER (IAT01) 2020:083:14:28:24.811   0.0   --    --  181.1781 -16.3633 353.41 164.75 166.74   
703777    23069 0          Spiderweb 2020:083:14:46:31.416  20.0 ACIS-S NONE 175.1998 -26.4967 339.00 153.65  16.80 dss pspc rass
503152    22424 2          SNR 1987A 2020:083:20:49:59.963  37.3  HRC-S LETG  83.8424 -69.2501 263.98  87.95  65.89 dss pspc rass
 ----     47358       CAL-ER (CTI01) 2020:084:07:46:14.777   1.0   --    --  181.7000  -5.4000 334.72 175.70  88.01   
 ----     47357       CAL-ER (PER17) 2020:084:08:45:44.106   3.0   --    --  193.3000  -0.2000  97.85 170.18 122.95   
 ----     47356       CAL-ER (PER16) 2020:084:11:00:00.000   3.0   --    --  315.0000  15.0000  79.11  49.83 120.70   
 ----     47355       CAL-ER (PER18) 2020:084:13:00:00.000   3.0   --    --  193.3000  -0.2000  98.52 170.33 120.68   
 ----     47354       CAL-ER (PER20) 2020:084:17:00:00.000   3.0   --    --  182.0000   5.2000 195.51 172.85  97.11   
 ----     47353       CAL-ER (CTI02) 2020:084:18:53:51.343   3.0   --    --    0.0000  51.0000   5.25  49.40 124.24   
704032    23107 0 PSO J047.4479+27.299 2020:084:20:50:22.360  27.0 ACIS-S NONE  47.4271  27.3149 294.06  48.73  57.56 dss pspc rass
201235    21181 0             Gd 394 2020:085:04:55:09.028  49.7  HRC-S LETG 318.1800  50.0836  54.76  62.04  86.75 dss pspc rass
601462    22485 0         M87 Halo 3 2020:085:19:22:14.678  26.0 ACIS-S NONE 187.6556  12.4972 169.29 165.17 104.67 dss pspc rass
703606    20605 1      PSS 1326+0743 2020:086:03:03:26.212   5.0 ACIS-S NONE 201.5674   7.7168 113.00 160.91  55.62 dss pspc rass
703990    22604 2             Sgr A* 2020:086:05:00:32.924  33.0 ACIS-S NONE 266.4265 -29.0302  85.00  98.83  82.25 dss pspc rass
 ----     47352       CAL-ER (IAT02) 2020:086:14:38:41.962   0.0   --    --  206.2700 -14.9700  60.26 156.08  56.93   
703777    23201 0          Spiderweb 2020:086:15:11:23.248  28.0 ACIS-S NONE 175.2023 -26.4966 339.00 153.90  75.77 dss pspc rass
 ----     47351       CAL-ER (CTI03) 2020:086:23:32:24.119   6.0   --    --  180.2000  -1.7000 261.42 174.19  82.14   
 ----     47350       CAL-ER (PER07) 2020:087:01:40:07.254   3.0   --    --  131.4000  20.3000 253.38 121.78  54.99   
 ----     47349       CAL-ER (PER08) 2020:087:04:30:00.000   4.0   --    --  237.8000  -2.5000  91.42 128.40 155.24   
 ----     47348       CAL-ER (PER09) 2020:087:06:02:46.424   1.0   --    --  190.6000  -2.2000  96.47 175.59  47.66   
 ----     47347       CAL-ER (PER10) 2020:087:07:01:49.372   3.0   --    --  182.3000   2.5000 217.24 173.46 120.97   
 ----     47346       CAL-ER (PER11) 2020:087:09:28:00.000   1.0   --    --  184.2000  28.4000 184.16 148.79  41.42   
 ----     47345       CAL-ER (PER12) 2020:087:10:22:30.384   0.1   --    --    0.0000  51.0000   8.53  48.55 100.53   
 ----     47344       CAL-ER (CTI04) 2020:087:10:32:40.384   2.0   --    --  360.0000  51.0000   8.54  48.54   0.01   
601429    23037 0            NGC4438 2020:087:12:18:34.285  20.0 ACIS-S NONE 186.9421  13.0102 170.99 164.20 115.78 dss pspc rass
601449    22951 0          H1821+643 2020:087:18:24:47.991  25.0  HRC-S LETG 275.5146  64.3251  92.32  87.93  78.28 dss pspc rass
601429    23200 0            NGC4438 2020:088:01:54:21.701  26.0 ACIS-S NONE 186.9417  13.0101 170.99 164.01  78.28 dss pspc rass
703911    23018 0          PSO167-13 2020:088:09:51:18.723  10.0 ACIS-S NONE 167.6226 -13.4809 295.00 157.96 126.53 dss pspc rass
503152    23198 2          SNR 1987A 2020:088:13:11:48.299  48.0  HRC-S LETG  83.8432 -69.2508 263.98  88.19  82.47 dss pspc rass
703911    23199 0          PSO167-13 2020:089:03:05:37.874  41.1 ACIS-S NONE 167.6246 -13.4825 295.00 157.54  82.47 dss pspc rass
 ----     47343       CAL-ER (CTI05) 2020:089:14:50:31.294   1.0   --    --  186.3000  -5.6000 314.42 177.13  25.76   
 ----     47342       CAL-ER (PER13) 2020:089:15:48:57.420   1.0   --    --  190.8000  -5.1000  73.00 177.17 118.21   
 ----     47341       CAL-ER (PER14) 2020:089:16:48:47.944   3.0   --    --  315.0000   1.0000  93.77  53.44 124.54   


Previous weeks' short-term schedules.

Last modified: 03/27/20



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