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.

JUN2617B


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     49984       CAL-ER (P7002) 2017:177:03:02:31.427   1.0   --    --  301.4000 -30.8000  78.97 155.31 108.11   
 ----     49983       CAL-ER (P7003) 2017:177:09:00:00.000   6.0   --    --    2.0000 -24.0000 110.44 101.96  53.61   
 ----     49982       CAL-ER (P7004) 2017:177:11:15:00.000   1.0   --    --  301.4000 -30.8000  78.60 155.61  53.62   
 ----     49981       CAL-ER (P7005) 2017:177:13:37:43.412   1.0   --    --  267.0000   0.0000 198.60 155.30 133.79   
502683    19033 1          SN2017egm 2017:177:15:25:20.477  24.0 ACIS-S NONE 154.7562  46.4735 274.83  52.43 105.52 dss pspc rass
790307    19867 3              3C273 2017:177:22:38:11.077  27.3 ACIS-S HETG 187.2767   2.0751 246.66  90.58  54.22 dss pspc rass
703431    19634 1      SDSS1004+4112 2017:178:06:45:18.677  36.3 ACIS-S NONE 151.1279  41.2311 273.78  48.97  52.32 dss pspc rass
703311 P1 19462 0 J164710.66+210514.5 2017:178:17:24:26.586  23.9 ACIS-S NONE 251.8077  21.1056 209.88 129.50  83.84 dss pspc rass
790304    19864 3             MKN421 2017:179:00:34:41.585  54.7 ACIS-S LETG 166.1098  38.2524 261.00  59.99  73.87 dss pspc rass
 ----     49979       CAL-ER (P7101) 2017:179:16:37:15.201   1.0   --    --  265.0000 -14.0000 230.25 164.95 105.52   
 ----     49978       CAL-ER (P7102) 2017:179:22:04:00.000   1.0   --    --  304.0000 -31.0000  78.03 155.48 168.55   
 ----     49977       CAL-ER (P7103) 2017:180:00:27:00.000   6.7   --    --    2.0000 -24.0000 109.42 104.27  51.42   
 ----     49976       CAL-ER (P7104) 2017:180:02:50:00.000   1.0   --    --  304.0000 -31.0000  77.78 155.65  51.43   
 ----     49975       CAL-ER (P7105) 2017:180:04:38:30.698   1.0   --    --  267.0000  -1.0000 206.00 155.32 142.52   
790305    19865 2             MKN421 2017:180:06:17:59.698  55.5 ACIS-S LETG 166.1103  38.2536 260.00  59.01  99.49 dss pspc rass
201144    18951 1          HD 153919 2017:180:22:24:01.873  58.5 ACIS-S HETG 255.9654 -37.8281 289.99 155.52 114.91 dss pspc rass
790306    19866 2             MKN421 2017:181:15:20:13.880  54.6 ACIS-S LETG 166.1140  38.2550 256.00  57.95 115.65 dss pspc rass
 ----     49973       CAL-ER (P7201) 2017:182:07:21:27.310   1.0   --    --  264.0000 -14.0000 237.05 162.13 105.15   
 ----     49972       CAL-ER (P7202) 2017:182:12:00:00.000   1.0   --    --  305.8000 -32.8000  72.98 155.68 178.56   
 ----     49971       CAL-ER (P7203) 2017:182:15:57:00.000   7.0   --    --    2.0000 -24.0000 108.37 106.58  50.08   
 ----     49970       CAL-ER (P7204) 2017:182:18:30:00.000   1.0   --    --  306.0000 -33.0000  72.39 155.67  49.98   
 ----     49969       CAL-ER (P7205) 2017:182:19:45:00.000   1.0   --    --  254.4000 -21.7000 261.78 155.59 148.37   
 ----     49968       CAL-ER (P7206) 2017:182:20:42:56.744   1.0   --    --  189.6000   3.6500 231.25  87.44  70.46   
601344    19387 0           NGC 4536 2017:182:22:33:24.344  15.0 ACIS-S NONE 188.6177   2.2116 231.25  87.02   1.74 dss pspc rass
 ----     49967       CAL-ER (I9014) 2017:183:02:52:57.799   1.0   --    --  189.6000   3.6500 231.25  87.19   1.74   
300396    19014 0           NGC 6752 2017:183:03:49:55.870 100.0 ACIS-S NONE 287.6856 -59.9967   6.97 142.72 114.61 dss pspc rass


JUN1917A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
291360    19843 2               Vega 2017:170:05:50:37.168   1.0  HRC-S NONE 279.0513  38.8252 168.33 116.90  95.20 dss pspc rass
201114    18921 0    IRDC G35.4-0.33 2017:170:06:32:34.168  56.0 ACIS-I NONE 284.3140   2.1294 151.00 149.83  39.98 dss pspc rass
291358    19841 2               Vega 2017:170:22:30:19.305   2.0  HRC-I NONE 279.2604  38.7915 168.85 117.00  40.15 dss pspc rass
401810    19952 1           Vela X-1 2017:170:23:53:51.801  55.5 ACIS-S HETG 135.5393 -40.5321 223.50  77.43 156.19 dss pspc rass
401850 P1 18982 0    IGR J16482-2959 2017:171:15:54:23.494   5.1 ACIS-I NONE 252.1288 -30.0079 289.35 163.40  90.13 dss pspc rass
 ----     49999       CAL-ER (P6801) 2017:171:17:48:29.630   0.3   --    --  247.5634 -37.2049 300.35 156.83  15.78   
 ----     49998       CAL-ER (P6802) 2017:171:19:14:52.309   0.7   --    --  119.0000 -35.0000 210.10  64.85  93.95   
 ----     49997       CAL-ER (P6803) 2017:171:21:50:38.414   0.3   --    --  261.5893 -47.4254 342.58 155.21  91.21   
 ----     49996       CAL-ER (P6804) 2017:171:23:10:06.804   0.4   --    --  300.0000 -40.0000  66.40 149.47  62.88   
 ----     49995       CAL-ER (P6805) 2017:172:00:52:26.513   0.3   --    --   54.5043 -25.4175 142.27  59.51  90.73   
 ----     49994       CAL-ER (P6806) 2017:172:02:17:58.931   0.3   --    --  300.1388 -40.7636  65.21 149.16  90.18   
 ----     49993       CAL-ER (P6807) 2017:172:06:11:48.682   0.2   --    --  268.6000   4.8000 182.39 151.75 133.98   
801656    20104 0           NGC 6338 2017:172:07:59:24.316  15.0 ACIS-S NONE 258.8140  57.4257 203.03  98.61  55.12 dss pspc rass
703374 P1 19526 0            Mrk 504 2017:172:12:30:45.260   5.6 ACIS-S NONE 255.2969  29.4243 206.99 125.27  28.15 dss pspc rass
201114    20100 0    IRDC G35.4-0.33 2017:172:14:33:05.514  43.9 ACIS-I NONE 284.3129   2.1294 151.00 151.00  60.77 dss pspc rass
703407 P1 19559 0 SDSSJ234145.51-00464 2017:173:03:18:01.008   3.5 ACIS-S NONE 355.4566  -0.7923 113.41  95.17  78.94 dss pspc rass
790293    19853 3             MKN421 2017:173:05:04:32.219  15.0 ACIS-S HETG 166.1057  38.2303 259.30  64.59 147.09 dss pspc rass
790294    19854 2             MKN421 2017:173:09:43:22.819  10.0 ACIS-S LETG 166.1111  38.2530 259.43  64.44   0.13 dss pspc rass
790295    19855 2             MKN421 2017:173:12:41:36.114  10.0  HRC-S LETG 166.1049  38.2270 259.49  64.34   0.07 dss pspc rass
790296    19856 2             MKN421 2017:173:15:41:07.808  10.0 ACIS-S LETG 166.1111  38.2527 259.57  64.24   0.09 dss pspc rass
790297    19857 2             MKN421 2017:173:18:39:21.103  10.0  HRC-S LETG 166.1049  38.2267 259.63  64.14   0.06 dss pspc rass
790298    19858 2             MKN421 2017:173:21:38:52.797  10.0 ACIS-S LETG 166.1111  38.2523 259.71  64.04   0.08 dss pspc rass
790299    19859 2             MKN421 2017:174:00:37:06.091  10.0  HRC-S LETG 166.1050  38.2263 259.77  63.94   0.06 dss pspc rass
790300    19860 2             MKN421 2017:174:03:57:21.691  15.3 ACIS-S HETG 166.1059  38.2290 259.83  63.83   0.07 dss pspc rass
 ----     49991       CAL-ER (P6901) 2017:174:09:00:02.230   0.8   --    --  240.3277 -25.9223 268.10 151.16  95.98   
 ----     49990       CAL-ER (P6902) 2017:174:11:53:20.467   0.1   --    --  305.6000 -29.1000  87.17 149.57 150.34   
 ----     49989       CAL-ER (ECT69) 2017:174:17:30:04.996   0.6   --    --  342.0000  29.0000 120.30  94.99  74.49   
 ----     49988       CAL-ER (P6904) 2017:174:19:32:18.698   0.3   --    --  307.0731 -17.7885 105.82 147.22  60.28   
 ----     49987       CAL-ER (P6905) 2017:174:22:17:23.754   0.2   --    --  262.0000 -48.0000 337.34 153.99 109.80   
300400    19711 0             AR Sco 2017:174:23:52:58.483  26.0 ACIS-I NONE 245.4375 -22.8759 263.38 154.97  69.46 dss pspc rass
291359    19842 2               Vega 2017:175:07:47:25.297   2.0  HRC-S NONE 279.2612  38.7881 158.98 117.56 115.26 dss pspc rass
801656    18892 0           NGC 6338 2017:175:08:48:02.297  12.0 ACIS-S NONE 258.8150  57.4263 203.02  98.32  36.45 dss pspc rass
201114    20101 0    IRDC G35.4-0.33 2017:175:12:38:51.264  35.0 ACIS-I NONE 284.3138   2.1294 151.00 152.32  68.92 dss pspc rass
401886    19719 2       GRS 1915+105 2017:175:22:38:57.864  25.0 ACIS-S HETG 288.8219  10.9470 156.69 142.63  11.67 dss pspc rass
291361    19844 2               Vega 2017:176:05:58:07.923   1.0  HRC-S NONE 278.7273  38.8306 175.07 117.66  32.40 dss pspc rass
401894    20098 0     MAXI J0911-655 2017:176:07:07:27.251  30.0  HRC-S NONE 138.0261 -64.8494 219.80  94.46 167.20 dss pspc rass
601315 P1 19358 0           NGC 5383 2017:176:16:09:42.922   5.0 ACIS-S NONE 209.2745  41.8676 236.42  91.31 120.43 dss pspc rass
291362    19845 2               Vega 2017:176:18:00:11.367   1.0  HRC-S NONE 279.7893  38.8233 183.65 117.63  52.38 dss pspc rass
201114    20102 0    IRDC G35.4-0.33 2017:176:18:44:08.367  17.0 ACIS-I NONE 284.3125   2.1295 151.00 152.80  47.85 dss pspc rass
 ----     49985       CAL-ER (P7001) 2017:177:00:33:05.154   0.3   --    --  248.6080 -43.0046 303.90 150.80 168.31   


Previous weeks' short-term schedules.

Last modified: 06/23/17



Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email:   cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2017. All rights reserved.