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.

JUL1320A


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
503131    21361 0              N132D 2020:195:01:01:22.520  31.4 ACIS-S NONE  81.3209 -69.6395 160.06  94.11  77.41 dss pspc rass
 ----     47062       CAL-ER (CTI01) 2020:195:10:19:00.495   3.0   --    --  293.0000 -26.0000   0.97 175.75  83.33   
 ----     47061       CAL-ER (PER02) 2020:195:12:45:00.000   1.0   --    --   99.0000 -24.0000 162.30  47.74 128.60   
 ----     47060       CAL-ER (PER03) 2020:195:14:30:00.000   1.0   --    --  295.0000 -26.0000  22.73 175.40 127.69   
 ----     47059       CAL-ER (PER04) 2020:195:16:15:00.000   3.0   --    --  294.5000 -13.8000 171.03 171.96 148.66   
601457    22480 0           IC342 NW 2020:195:21:07:48.600  45.0 ACIS-I NONE  56.5829  68.1237  66.70  57.81 114.67 dss pspc rass
590587    23257 2              Cas A 2020:196:09:59:27.227   2.0 ACIS-I NONE 350.8631  58.8275 128.68  87.00  29.21 dss pspc rass
590588    23258 1              Cas A 2020:196:10:41:17.227   2.0 ACIS-I NONE 350.8227  58.8535 128.74  87.02   0.04 dss pspc rass
590589    23259 1              Cas A 2020:196:11:23:07.227   2.0 ACIS-I NONE 350.7822  58.8795 128.80  87.04   0.04 dss pspc rass
590590    23260 1              Cas A 2020:196:12:04:57.227   2.0 ACIS-I NONE 350.8627  58.8276 128.75  87.05   0.07 dss pspc rass
590591    23261 1              Cas A 2020:196:12:46:47.227   2.0 ACIS-I NONE 350.8222  58.8536 128.81  87.07   0.04 dss pspc rass
590592    23262 1              Cas A 2020:196:13:28:37.227   2.0 ACIS-I NONE 350.7815  58.8796 128.86  87.09   0.04 dss pspc rass
590593    23263 1              Cas A 2020:196:14:10:27.227   2.0 ACIS-I NONE 350.8621  58.8277 128.82  87.10   0.07 dss pspc rass
590594    23264 1              Cas A 2020:196:14:52:17.227   2.0 ACIS-I NONE 350.8214  58.8537 128.88  87.12   0.04 dss pspc rass
590595    23265 1              Cas A 2020:196:15:34:07.227   2.0 ACIS-I NONE 350.7806  58.8797 128.93  87.14   0.04 dss pspc rass
601440    21643 1        GLIMPSE-C01 2020:196:16:41:51.593  30.0 ACIS-I NONE 282.2464  -1.4718 201.00 156.81  85.08 dss pspc rass
801839    21560 0          H1821+643 2020:197:01:32:41.148  36.0 ACIS-S NONE 275.4937  64.3530 184.00  92.91  68.97 dss pspc rass
503130    23312 0           G1.9+0.3 2020:197:12:13:52.860  44.0 ACIS-S NONE 267.1781 -27.1477 268.00 154.03 115.63 dss pspc rass
 ----     47058       CAL-ER (CTI02) 2020:198:00:46:15.287   3.0   --    --  290.0000 -23.0000 286.80 174.59  22.88   
 ----     47057       CAL-ER (PER05) 2020:198:03:00:00.000   3.0   --    --  303.0000 -19.0000 109.94 172.72 178.47   
 ----     47056       CAL-ER (PER01) 2020:198:05:00:00.000   3.0   --    --   66.0000  17.0000 103.59  46.99 126.22   
 ----     47055       CAL-ER (CAL01) 2020:198:07:00:00.000   1.0   --    --  303.0000 -19.0000 110.21 172.86 126.23   
 ----     47054       CAL-ER (CAL01) 2020:198:08:30:00.000   1.0   --    --   52.0000  14.0000 106.85  60.91 112.51   
 ----     47053       CAL-ER (PER07) 2020:198:10:00:00.000   3.0   --    --  150.0000 -15.0000 223.48  49.35 140.34   
 ----     47052       CAL-ER (CTI04) 2020:198:11:50:44.862   2.0   --    --  150.0000 -15.0000 223.43  49.29   0.05   
300463    22954 0          V1223 Sgr 2020:198:13:46:10.862  35.0 ACIS-S HETG 283.7342 -31.1530 307.99 165.17 115.95 dss pspc rass
503131    23317 0              N132D 2020:199:00:06:07.325  43.6 ACIS-S NONE  81.3293 -69.6392 160.07  94.20  94.98 dss pspc rass
300463    23318 0          V1223 Sgr 2020:199:12:49:06.787  15.0 ACIS-S HETG 283.7357 -31.1537 307.99 164.38  94.98 dss pspc rass
201285    22990 0       Westerlund 1 2020:199:17:29:14.387  25.0 ACIS-I NONE 251.7370 -45.8487 288.24 135.48  28.76 dss pspc rass
801839    23319 0          H1821+643 2020:200:01:11:45.478  22.4 ACIS-S NONE 275.4941  64.3531 183.99  92.97 136.58 dss pspc rass
503130    23313 0           G1.9+0.3 2020:200:08:06:29.190  30.0 ACIS-S NONE 267.1780 -27.1475 268.00 151.36 115.63 dss pspc rass
 ----     47051       CAL-ER (CTI05) 2020:200:16:50:38.242   3.0   --    --  292.0000 -19.0000 251.14 173.84  35.91   
 ----     47050       CAL-ER (CAL01) 2020:200:19:00:00.000   2.0   --    --  303.0000 -19.0000 113.96 175.23 140.95   
 ----     47049       CAL-ER (CAL01) 2020:200:20:45:00.000   3.0   --    --   62.0000  17.0000 103.69  53.23 122.71   
 ----     47048       CAL-ER (CAL01) 2020:200:23:30:00.000   3.0   --    --  303.0000 -19.0000 114.48 175.38 122.74   
 ----     47047       CAL-ER (PER06) 2020:201:02:00:00.000   3.0   --    --  293.6000 -15.5000 220.96 172.86 109.56   
801839    23239 0          H1821+643 2020:201:04:12:44.040  43.0 ACIS-S NONE 275.4959  64.3536 183.99  92.96  91.53 dss pspc rass


JUL0620B


Seq #     ObsID Constr.    Target              Start        Time   SI   Grat    RA       Dec    Roll   Pitch   Slew
----------------------------------------------------------------------------------------------------------------------------
 ----     47081       CAL-ER (PER05) 2020:187:15:37:11.651   3.0   --    --   54.0000 -54.0000 134.21  88.35  75.12   
 ----     47080       CAL-ER (PER01) 2020:187:16:58:02.020   0.1   --    --  175.0000 -45.0000 240.19  92.86  69.03   
 ----     47079       CAL-ER (PER06) 2020:187:17:34:40.771   3.0   --    --  282.0000 -25.0000 308.68 176.40  83.91   
 ----     47078       CAL-ER (PER07) 2020:187:18:50:45.885   3.0   --    --  280.0000 -22.0000 260.44 175.23  47.56   
 ----     47077       CAL-ER (PER02) 2020:187:20:30:00.000   0.9   --    --  283.0000 -25.0000 318.82 176.96  57.31   
 ----     47076       CAL-ER (PER10) 2020:187:21:28:30.141   0.1   --    --  145.0000 -15.0000 226.72  54.21 122.94   
 ----     47075       CAL-ER (CTI01) 2020:187:22:20:53.584   0.3   --    --  164.2000  25.1000 259.44  53.52  55.59   
790344    22820 2             MKN421 2020:187:22:53:08.232   7.5 ACIS-S HETG 166.1002  38.2313 269.01  53.71  16.92 dss pspc rass
790345    22821 1             MKN421 2020:188:01:26:58.832   5.0 ACIS-S LETG 166.1007  38.2547 269.01  53.63   0.02 dss pspc rass
790346    22822 1             MKN421 2020:188:03:01:53.632   5.0  HRC-S LETG 166.0999  38.2283 269.01  53.58   0.03 dss pspc rass
790347    22823 1             MKN421 2020:188:04:38:06.832   5.0 ACIS-S LETG 166.1007  38.2547 269.01  53.54   0.03 dss pspc rass
790348    22824 1             MKN421 2020:188:06:13:01.632   5.0  HRC-S LETG 166.0999  38.2283 269.01  53.49   0.03 dss pspc rass
790349    22825 1             MKN421 2020:188:07:49:14.832   5.0 ACIS-S LETG 166.1007  38.2547 269.01  53.44   0.03 dss pspc rass
790350    22826 1             MKN421 2020:188:09:24:09.632   5.0  HRC-S LETG 166.0999  38.2283 269.01  53.39   0.03 dss pspc rass
790351    22827 1             MKN421 2020:188:11:19:51.232   7.5 ACIS-S HETG 166.1002  38.2313 269.01  53.33   0.00 dss pspc rass
790352    22828 2              3C273 2020:188:13:49:58.361  29.0 ACIS-S HETG 187.2766   2.0765 247.46  81.23  43.19 dss pspc rass
402057    23280 1       OAO 1657-415 2020:188:22:26:04.431  27.3 ACIS-S HETG 255.1797 -41.6421 296.60 147.75  77.71 dss pspc rass
402175    22411 2             gx 5-1 2020:189:06:26:34.524  18.3 ACIS-S HETG 270.2817 -25.0578 265.00 164.83  44.89 dss pspc rass
790344    23304 2             MKN421 2020:189:12:12:58.390   7.0 ACIS-S HETG 166.1010  38.2299 269.01  52.55 116.54 dss pspc rass
790345    23305 1             MKN421 2020:189:14:38:28.990   5.0 ACIS-S LETG 166.1013  38.2535 269.01  52.47   0.02 dss pspc rass
790346    23306 1             MKN421 2020:189:16:13:23.790   5.0  HRC-S LETG 166.1005  38.2272 269.01  52.42   0.03 dss pspc rass
790347    23307 1             MKN421 2020:189:17:49:36.990   5.0 ACIS-S LETG 166.1012  38.2537 269.01  52.37   0.03 dss pspc rass
790348    23308 1             MKN421 2020:189:19:24:31.790   5.0  HRC-S LETG 166.1004  38.2274 269.01  52.32   0.03 dss pspc rass
790349    23309 1             MKN421 2020:189:21:00:44.990   5.0 ACIS-S LETG 166.1012  38.2538 269.01  52.26   0.03 dss pspc rass
790350    23310 1             MKN421 2020:189:22:35:39.790   5.0  HRC-S LETG 166.1004  38.2275 269.01  52.21   0.03 dss pspc rass
790351    23311 1             MKN421 2020:190:00:31:21.390   7.0 ACIS-S HETG 166.1006  38.2306 269.01  52.15   0.00 dss pspc rass
 ----     47074       CAL-ER (CTI02) 2020:190:03:11:54.159   3.0   --    --  285.0000 -20.0000 223.46 176.61 124.93   
 ----     47073       CAL-ER (PER11) 2020:190:04:42:35.835   1.0   --    --  284.0000 -30.0000 336.12 171.79 113.38   
 ----     47072       CAL-ER (PER04) 2020:190:07:25:00.000   3.0   --    --  265.6000 -13.3000 243.34 157.11  88.49   
 ----     47071       CAL-ER (PER08) 2020:190:09:00:00.000   3.0   --    --  283.0000 -14.0000 207.44 170.43  43.33   
 ----     47070       CAL-ER (CTI03) 2020:190:13:19:44.949   3.0   --    --  299.0000  -6.0000 148.02 160.42  64.44   
704050    23301 1            Mrk 335 2020:190:14:42:02.773  63.3 ACIS-S HETG   1.6022  20.1880 116.78  96.51  70.08 dss pspc rass
990021    23290 0          Blank Sky 2020:191:08:43:24.210  20.0  HRC-S NONE  52.0145  13.9871 107.57  54.28  48.83 dss pspc rass
 ----     47069       CAL-ER (IAT02) 2020:191:14:56:40.764   0.1   --    --  305.5000 -19.9000 101.56 164.47 109.99   
503130    23056 0           G1.9+0.3 2020:191:15:54:24.826  28.0 ACIS-S NONE 267.1780 -27.1465 267.00 159.53 178.80 dss pspc rass
503206    23314 0          SN2020nlb 2020:192:00:16:41.407  62.6 ACIS-S NONE 186.3460  18.2250 256.00  71.50  90.49 dss pspc rass
 ----     47068       CAL-ER (CTI06) 2020:192:18:17:02.137   5.0   --    --  276.0000 -13.0000 234.06 163.69  94.83   
 ----     47067       CAL-ER (PER12) 2020:192:22:15:00.000   0.1   --    --  298.0000  -6.0000 156.17 162.28  84.15   
 ----     47066       CAL-ER (PER13) 2020:192:23:18:00.000   3.0   --    --  265.0000  -8.0000 237.18 151.77  90.11   
 ----     47065       CAL-ER (PER09) 2020:193:02:30:00.000   0.5   --    --  293.0000 -48.0000   5.21 154.02 119.80   
 ----     47064       CAL-ER (PER03) 2020:193:04:00:00.000   1.0   --    --  102.0000 -28.0000 169.69  50.76 103.37   
 ----     47063       CAL-ER (CTI05) 2020:193:05:04:45.169   0.5   --    --  102.0000 -28.0000 169.64  50.76   0.06   
503131    21888 0              N132D 2020:193:05:57:30.879  25.0 ACIS-S NONE  81.3212 -69.6425 152.06  94.08  43.33 dss pspc rass
990022    23291 0          Blank Sky 2020:193:13:23:33.525  30.0  HRC-S NONE 141.8076 -20.6831 216.93  52.22  62.45 dss pspc rass
402176    22412 2             gx 5-1 2020:193:22:24:06.593  20.0 ACIS-S HETG 270.2764 -25.0617 280.99 160.41 112.73 dss pspc rass
503206    23315 0          SN2020nlb 2020:194:04:34:15.517  12.3 ACIS-S NONE 186.3504  18.2256 245.00  69.56  95.92 dss pspc rass
503131    23303 0              N132D 2020:194:08:39:53.171  25.0 ACIS-S NONE  81.3211 -69.6425 152.06  94.08 113.07 dss pspc rass
590585    22813 2    RXJ 1856.5-3754 2020:194:16:08:40.393  30.0 ACIS-S LETG 284.0937 -37.8996 334.37 162.50  74.79 dss pspc rass


Previous weeks' short-term schedules.

Last modified: 07/10/20



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 © 1998-2019. All rights reserved.