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.

FEB2017A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
601288    19331 0           NGC 4382 2017:051:06:07:20.259  22.6 ACIS-S NONE 186.3578  18.2132  99.00 147.51  14.41 dss pspc rass
401853    18985 1            Aql X-1 2017:051:13:02:43.081  20.0 ACIS-S NONE 287.8208   0.5613  74.55  47.16 100.71 dss pspc rass
703423    19626 1        QJ0158-4325 2017:051:19:24:02.721  35.0 ACIS-S NONE  29.6671 -43.3947 253.16  57.85 146.22 dss pspc rass
401810    18617 1           Vela X-1 2017:052:05:39:09.843  45.1 ACIS-S HETG 135.4977 -40.5522 326.98 125.90  73.28 dss pspc rass
 ----     P2301       CAL-ER (50292) 2017:052:18:48:00.000   0.3   --    --  149.1221 -13.2241 345.79 155.68  32.26   
 ----     P2302       CAL-ER (50291) 2017:053:02:00:00.000   0.3   --    --    5.7619 -53.7203 220.74  49.79 106.18   
 ----     P2303       CAL-ER (50290) 2017:053:03:29:08.209   0.3   --    --  142.0000 -10.0000 326.25 155.77 106.37   
 ----     P2304       CAL-ER (50289) 2017:053:06:43:56.983   0.3   --    --  347.0000 -60.0000 194.69  50.54 107.52   
401884    19717 2       GRS 1915+105 2017:053:08:17:23.496  25.0 ACIS-S HETG 288.7998  10.9230  67.22  51.08 120.52 dss pspc rass
601288    20012 0           NGC 4382 2017:053:15:51:22.605  26.4 ACIS-S NONE 186.3575  18.2136  99.00 149.40  98.18 dss pspc rass
401810    19953 1           Vela X-1 2017:053:23:55:40.571  72.0 ACIS-S HETG 135.4967 -40.5521 326.98 125.97 133.35 dss pspc rass
601288    20013 0           NGC 4382 2017:054:20:40:58.536  32.0 ACIS-S NONE 186.3571  18.2141  99.00 150.30 133.35 dss pspc rass
401841 P1 18973 0    IGR J19294+1327 2017:055:06:12:10.364   5.0 ACIS-I NONE 292.3766  13.4324  65.17  50.20 100.64 dss pspc rass
401846 P1 18978 0    IGR J20413+3210 2017:055:07:58:08.029   5.0 ACIS-I NONE 310.3757  32.2010  36.47  49.02  32.89 dss pspc rass
 ----     P2401       CAL-ER (50287) 2017:055:10:15:00.000   0.3   --    --  162.0000  34.0000 169.51 155.07 107.62   
 ----     P2402       CAL-ER (50286) 2017:055:11:42:45.280   0.3   --    --  133.0000   8.0000 275.09 155.65 100.13   
 ----     P2403       CAL-ER (50285) 2017:055:13:11:21.890   0.3   --    --   30.0000  -9.0000 274.84  51.62 104.00   
 ----     P2404       CAL-ER (50284) 2017:055:16:00:00.000   0.3   --    --  299.3097  27.0413  51.11  52.07 138.73   
 ----     P2405       CAL-ER (50283) 2017:055:22:05:25.367   0.3   --    --  290.0000  12.0000  68.17  52.25  22.24   
601288    20014 0           NGC 4382 2017:055:23:51:50.384  52.5 ACIS-S NONE 186.3577  18.2133  99.00 151.16  98.99 dss pspc rass
703464    19990 0 SDSS J140737.16+4428 2017:056:14:51:45.216  30.0 ACIS-S NONE 211.9298  44.4660 110.90 122.10  42.29 dss pspc rass
801618    18300 0     MOO J1155+3901 2017:056:23:37:02.216  34.0 ACIS-I NONE 178.9219  39.0498 146.01 144.95  28.06 dss pspc rass
703242    19784 0            Mrk 273 2017:057:09:28:59.216  34.0 ACIS-S NONE 206.2130  55.8731 119.97 120.33  25.28 dss pspc rass
401837 P1 18969 0    IGR J20310+3835 2017:057:19:25:32.661   5.0 ACIS-I NONE 307.7222  38.5422  39.42  55.74  64.76 dss pspc rass
801698 P1 19761 0   SPT-CLJ0001-5440 2017:057:21:41:09.122  14.0 ACIS-I NONE   0.3908 -54.6663 207.40  48.97 165.48 dss pspc rass
 ----     P2501       CAL-ER (50281) 2017:058:02:29:00.000   0.1   --    --  151.0000 -14.5000 338.01 155.39 106.50   


FEB1517A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
703306    19457 2                M87 2017:046:11:50:40.376   5.0 ACIS-S NONE 187.7145  12.3701  87.00 142.20  25.00 dss pspc rass
300399    19017 0             YZ Cnc 2017:046:14:00:14.770  25.0  HRC-S LETG 122.7344  28.1617 243.00 150.95 138.33 dss pspc rass
601371 P1 19414 0           NGC 4312 2017:046:21:42:16.238   8.0 ACIS-S NONE 185.6412  15.5180  90.17 144.71 134.36 dss pspc rass
703242    18178 0            Mrk 273 2017:047:00:24:27.206  31.0 ACIS-S NONE 206.2115  55.8737 119.97 118.62  60.07 dss pspc rass
703307    19458 2                M87 2017:047:09:30:34.812   5.0 ACIS-S NONE 187.7149  12.3692  87.00 143.02  62.82 dss pspc rass
 ----     P2101       CAL-ER (50303) 2017:047:11:30:17.186   0.3   --    --  170.7524  33.1141 132.72 151.77  46.55   
 ----     P2102       CAL-ER (50302) 2017:047:12:38:21.508   0.9   --    --  172.2896  24.6957 116.49 155.50  17.67   
 ----     P2103       CAL-ER (50301) 2017:047:15:38:21.540   0.3   --    --  145.0000  66.0000 186.16 126.08  65.25   
 ----     P2104       CAL-ER (50300) 2017:047:23:44:31.645   0.3   --    --  107.0000  11.0000 275.95 137.47  85.02   
703408    19560 1           Mrk 1018 2017:048:01:48:25.826  51.0 ACIS-S NONE  31.5527  -0.2747 283.59  61.65  75.78 dss pspc rass
601276 P1 19319 0            NGC2672 2017:048:16:36:17.664  11.5 ACIS-S NONE 132.3384  19.0955 250.95 160.53 100.64 dss pspc rass
201110    18917 1        WD 1145+017 2017:048:20:42:33.502  10.5 ACIS-S NONE 177.1412   1.4622  66.87 152.33 175.94 dss pspc rass
201137 P1 18944 0 2MASS J11505787+4822 2017:049:00:12:01.849   3.0 ACIS-S NONE 177.7607  48.3680 140.09 137.32  85.38 dss pspc rass
801595    20010 0       Coma cluster 2017:049:01:27:18.849  59.0 ACIS-I NONE 194.6649  28.0620 102.99 136.51  35.65 dss pspc rass
703242    19783 0            Mrk 273 2017:049:18:15:55.849  32.2 ACIS-S NONE 206.2109  55.8739 119.97 119.17  38.09 dss pspc rass
 ----     P2201       CAL-ER (50298) 2017:050:03:47:42.214   3.0   --    --  164.2254  33.8398 151.81 155.06  36.18   
 ----     P2202       CAL-ER (50297) 2017:050:05:14:16.474   0.7   --    --  304.0000  43.0000  32.66  60.24  94.82   
 ----     P2203       CAL-ER (50296) 2017:050:07:47:56.849   2.0   --    --  156.5000  35.0000 170.75 155.99  96.78   
 ----     P2204       CAL-ER (50295) 2017:050:13:40:11.534   0.1   --    --  145.2217  43.3634 194.03 147.12  20.12   
 ----     P2205       CAL-ER (50294) 2017:050:14:33:17.259   0.3   --    --  174.5757  25.6844 115.00 154.94  68.05   
801595    20011 0       Coma cluster 2017:050:17:11:14.259  45.0 ACIS-I NONE 194.6656  28.0613 102.99 137.59  18.28 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 02/17/17



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