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.

JUL1618B


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
601424    20749 0      Bania Clump 2 2018:197:11:38:01.012  41.0 ACIS-I NONE 267.9157 -26.2744 274.99 154.31  45.29 dss pspc rass
801768 P1 20569 0     SDSSJ1138+2754 2018:197:23:40:15.345   8.2 ACIS-I NONE 174.5222  27.8753 263.34  53.13 105.33 dss pspc rass
 ----     49110       CAL-ER (CTI04) 2018:198:02:35:02.399   2.0   --    --  272.4735 -11.4471 243.60 155.30 102.28   
 ----     49109       CAL-ER (CTI01) 2018:198:03:57:33.107  28.0   --    --  313.8413 -40.6177  52.00 155.52 151.55   
 ----     49108       CAL-ER (PER06) 2018:198:12:24:22.194   3.0   --    --   73.5654  -1.6884 120.97  47.84 110.93   
 ----     49107       CAL-ER (PER02) 2018:198:13:59:23.171   1.0   --    --  151.3670  63.7702 314.78  48.49 132.82   
 ----     49106       CAL-ER (CTI05) 2018:198:15:27:25.087   3.0   --    --  293.5401   2.7771 187.16 155.86 107.83   
801762    20557 0         Abell 2146 2018:198:17:15:03.106  50.0 ACIS-I NONE 238.9198  66.3708 234.13  82.45  74.43 dss pspc rass
801809    21064 0 PSZ2 G218.59+71.31 2018:199:07:38:11.113  10.0 ACIS-I NONE 172.4298  23.7928 260.02  50.67  64.35 dss pspc rass
503023    20330 1     PSR J1809-1917 2018:199:11:04:00.842  33.0 ACIS-I NONE 272.4254 -19.2770 251.00 156.41 106.48 dss pspc rass
801762    21130 0         Abell 2146 2018:199:20:50:32.846  33.0 ACIS-I NONE 238.9193  66.3698 234.13  82.29  94.65 dss pspc rass
503023    21126 1     PSR J1809-1917 2018:200:06:37:04.852  40.5 ACIS-I NONE 272.4254 -19.2771 251.00 155.64  94.65 dss pspc rass
 ----     49105       CAL-ER (CTI10) 2018:200:18:23:45.753   1.0   --    --  296.3447   3.9307 185.52 155.17  75.42   
 ----     49104       CAL-ER (CTI06) 2018:200:19:29:10.474  30.0   --    --  317.2293 -39.3087  45.68 155.69 149.60   
 ----     49103       CAL-ER (CAL01) 2018:201:04:43:17.814   1.0   --    --  286.9004   1.2818 208.11 154.90 173.80   
 ----     49102       CAL-ER (CAL01) 2018:201:05:39:25.702   1.0   --    --  156.9236  59.5488 308.79  47.14 107.84   
 ----     49101       CAL-ER (CTI07) 2018:201:07:00:10.534   3.0   --    --  156.9236  59.5488 308.86  47.13   0.07   
801742    20940 0 SpARCS104922.6+56403 2018:201:08:45:48.534  53.0 ACIS-I NONE 162.2986  56.6621 301.04  47.81   5.20 dss pspc rass
 ----     49100       CAL-ER (IAT02) 2018:202:00:10:04.064   0.9   --    --  286.9526  -6.9226 221.72 161.40 114.41   
601424    21127 0      Bania Clump 2 2018:202:00:55:28.959  38.0 ACIS-I NONE 267.9138 -26.2716 274.99 150.00  64.04 dss pspc rass
 ----     49099       CAL-ER (CAL01) 2018:202:11:59:13.581   0.9   --    --  283.8106  -0.3002 218.10 154.06  67.10   
801742    21129 0 SpARCS104922.6+56403 2018:202:12:54:11.609  48.5 ACIS-I NONE 162.2975  56.6625 301.04  47.47 107.03 dss pspc rass
 ----     49098       CAL-ER (CAL01) 2018:203:03:03:24.816   0.9   --    --  288.1572  -6.0102 220.26 160.91 114.24   
601424    21128 0      Bania Clump 2 2018:203:03:49:17.269  20.7 ACIS-I NONE 267.9136 -26.2712 274.99 148.93  66.11 dss pspc rass
 ----     49097       CAL-ER (CTI09) 2018:203:10:10:10.479   3.0   --    --  293.5450   3.0508 198.12 155.41  89.34   


JUL0918A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     49136       CAL-ER (PER01) 2018:190:06:50:26.680   2.0   --    --  262.0000  44.0000 205.64 109.41  36.11   
 ----     49135       CAL-ER (PER02) 2018:190:08:30:00.000   2.0   --    --  163.0000   6.9000 247.43  54.85  92.46   
 ----     49134       CAL-ER (PER03) 2018:190:10:00:00.000   1.0   --    --   75.0000 -39.0000 146.99  68.84 110.30   
 ----     49133       CAL-ER (PER04) 2018:190:11:15:00.000   1.0   --    --  318.6000 -37.7000  68.06 149.88  84.20   
 ----     49132       CAL-ER (DFC_I) 2018:190:12:15:00.000   0.9   --    --  318.7408 -37.4933  68.49 149.88   0.42   
 ----     49131       CAL-ER (DC_T0) 2018:190:12:34:30.000   0.9   --    --  318.7408 -37.4933  68.47 149.89   0.02   
 ----     49130       CAL-ER (DFC_0) 2018:190:12:58:00.000   0.9   --    --  318.7408 -37.4933  68.45 149.90   0.02   
 ----     49129       CAL-ER (DC_T1) 2018:190:13:17:30.000   0.9   --    --  318.7469 -37.5263  68.39 149.89   0.08   
 ----     49128       CAL-ER (DFC_1) 2018:190:13:41:00.000   0.9   --    --  318.7408 -37.4933  68.41 149.91   0.04   
 ----     49127       CAL-ER (DC_T2) 2018:190:14:00:30.000   0.9   --    --  318.6992 -37.4982  68.33 149.95   0.06   
 ----     49126       CAL-ER (DFC_2) 2018:190:14:24:00.000   0.9   --    --  318.7408 -37.4933  68.36 149.93   0.03   
 ----     49125       CAL-ER (DC_T3) 2018:190:14:43:30.000   0.9   --    --  318.7347 -37.4603  68.39 149.96   0.05   
 ----     49124       CAL-ER (DFC_3) 2018:190:15:07:00.000   0.9   --    --  318.7408 -37.4933  68.32 149.95   0.08   
 ----     49123       CAL-ER (DC_T4) 2018:190:15:26:30.000   0.9   --    --  318.7824 -37.4885  68.35 149.93   0.03   
 ----     49122       CAL-ER (DFC_4) 2018:190:15:50:00.000   0.9   --    --  318.7408 -37.4933  68.27 149.97   0.06   
 ----     49121       CAL-ER (CAL01) 2018:190:17:05:34.540   2.0   --    --  279.4000   0.1000 201.25 155.84 150.25   
901397    19781 0 Bootes extended Cy18 2018:190:18:53:55.307  25.0 ACIS-I NONE 217.2129  34.9197 241.35  91.35  69.66 dss pspc rass
502687    19037 0     PSR J1048+2339 2018:191:02:17:52.307  23.0 ACIS-S NONE 162.1743  23.6848 260.51  48.67  49.56 dss pspc rass
201184    20167 0               vB 8 2018:191:09:17:47.923  10.6  HRC-S NONE 253.9290  -8.3053 243.71 143.26  94.92 dss pspc rass
402007    20738 0         4U 1907+09 2018:191:12:44:32.786  28.7 ACIS-S HETG 287.4254   9.8423 188.70 147.91  65.61 dss pspc rass
801762    20556 0         Abell 2146 2018:191:21:15:00.386  35.4 ACIS-I NONE 238.9193  66.3695 234.13  83.62  66.01 dss pspc rass
402007    21123 0         4U 1907+09 2018:192:07:34:30.483  42.3 ACIS-S HETG 287.4245   9.8417 188.70 147.95  66.01 dss pspc rass
 ----     49120       CAL-ER (CTI01) 2018:192:19:56:55.425   3.0   --    --  116.1000  70.1000 353.40  48.16  99.88   
 ----     49119       CAL-ER (CAL01) 2018:192:22:00:00.000   3.0   --    --   88.0000 -21.0000 151.23  48.49 153.45   
 ----     49118       CAL-ER (CAL01) 2018:193:01:00:00.000   3.0   --    --  297.5000 -35.0000  25.39 165.85 117.43   
 ----     49117       CAL-ER (CAL01) 2018:193:06:00:00.000   1.0   --    --   88.0000 -21.0000 150.85  48.61 117.43   
 ----     49116       CAL-ER (PER05) 2018:193:07:20:00.000   1.0   --    --  116.2000  70.1000 353.86  48.20 152.86   
 ----     49115       CAL-ER (CTI02) 2018:193:08:39:27.033   2.0   --    --  295.3000   1.9000 170.98 155.81 108.05   
402007    21124 0         4U 1907+09 2018:193:10:19:50.045  40.0 ACIS-S HETG 287.4267   9.8432 188.70 147.95  20.23 dss pspc rass
790309    20710 3             MKN421 2018:193:22:05:55.327  15.0 ACIS-S HETG 166.0990  38.2287 273.30  48.93 107.65 dss pspc rass
790310    20711 2             MKN421 2018:194:02:44:45.927  10.0 ACIS-S LETG 166.0970  38.2521 273.47  48.79   0.18 dss pspc rass
790311    20712 2             MKN421 2018:194:05:43:00.727  10.0  HRC-S LETG 166.0988  38.2259 273.57  48.70   0.10 dss pspc rass
790312    20713 2             MKN421 2018:194:08:42:33.927  10.0 ACIS-S LETG 166.0966  38.2523 273.70  48.61   0.13 dss pspc rass
790313    20714 2             MKN421 2018:194:11:40:48.727  10.0  HRC-S LETG 166.0985  38.2261 273.78  48.52   0.09 dss pspc rass
790314    20715 2             MKN421 2018:194:14:40:21.927  10.0 ACIS-S LETG 166.0963  38.2524 273.91  48.43   0.13 dss pspc rass
790315    20716 2             MKN421 2018:194:17:38:36.727  10.0  HRC-S LETG 166.0983  38.2262 273.99  48.34   0.08 dss pspc rass
790316    20717 2             MKN421 2018:194:20:58:09.327  15.0 ACIS-S HETG 166.0981  38.2294 274.09  48.24   0.10 dss pspc rass
402007    21125 0         4U 1907+09 2018:195:01:47:35.389  34.0 ACIS-S HETG 287.4278   9.8440 188.70 147.97 107.70 dss pspc rass
 ----     49114       CAL-ER (CAL01) 2018:195:11:52:15.350   1.0   --    --  115.5000  70.0000 357.52  48.35  99.96   
 ----     49113       CAL-ER (CAL01) 2018:195:13:15:00.000   1.0   --    --   88.0000 -21.0000 148.13  49.43 148.91   
 ----     49112       CAL-ER (CAL01) 2018:195:14:30:00.000   3.0   --    --  301.0000 -45.0000  17.00 155.89 107.64   
 ----     49111       CAL-ER (CTI03) 2018:196:00:14:37.548   2.0   --    --  278.7000  -2.4000 216.65 155.70 153.11   
901383    19676 0              CDWFS 2018:196:02:02:23.923  25.0 ACIS-I NONE 218.5902  35.0462 244.23  88.82  67.87 dss pspc rass
401879    19602 1       MXB 1659-298 2018:196:09:32:13.242  32.0 ACIS-S NONE 255.5139 -29.9260 274.26 144.14  79.45 dss pspc rass
703484 P1 20379 0      VHSJ2141-4816 2018:196:19:03:55.890   9.0 ACIS-S NONE 325.3467 -48.3049  53.05 143.73 102.95 dss pspc rass
401927 P1 20200 0    IGR J18017-3542 2018:196:22:09:12.760   5.0 ACIS-I NONE 270.3516 -35.6274 293.99 154.25  89.02 dss pspc rass
100158    18303 1            Jupiter 2018:196:23:59:05.660  40.4  HRC-I NONE 220.9884 -14.7763 261.00 109.91  49.72 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 07/13/18



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