Note that an observation is not listed as ``observed'' or ``partially observed'' (depending on the comparison of approved and achieved exposure time, reported in "Sched/Obs Time") until the data have been successfully processed. This means that many targets listed here as "scheduled" have actually been observed but have not yet completed processing.
To find out the processing status of an observation please go to the Check Chandra Observations Processing Status link on the CXC web page.
Click on Sequence Number for full list of parameters.
| Target | Inst/Grat | # Obs's./Req. time/Obsvd. time | Date of Observation | Status | Type | Seq # | ObsID | PI |
|---|---|---|---|---|---|---|---|---|
| PKS0637-752 | ACIS-S /NONE | 13 observations/NA/NA | Aug 14 1999 11:00AM | archived | CAL | 780001-2, 780132-9, 780213-5 | 1051-2, 1182-9, 1263-5 | CALIBRATION, focus |
| G21.5-0.9 [Chip S0, T=100, Offsets=23,0,0] | ACIS-S /NONE | 5 observations/NA/NA | Aug 15 1999 11:50AM | archived | CAL | 580217, 590031-2, 590034-5 | 1267, 163-4, 166-7 | CALIBRATION, off axis area |
| PKS0637-752 | ACIS-S /NONE | 9 observations/NA/NA | Aug 16 1999 5:50AM | archived | CAL | 780005-13 | 1055-63 | CALIBRATION, optical axis determination |
| M7 ACA Field Distortion | ACIS-S /NONE | 1/ 5.4/ 5.4 | Aug 16 1999 10:56PM | archived | CAL | 280216 | 1266 | CALIBRATION, Aspect Camera Field distortion coefficients |
| RXJ003033.2+261819 | ACIS-S /NONE | 3 observations/NA/NA | Aug 17 1999 2:54AM | archived | CAL | 880140, 880176, 880218 | 1190, 1226, 1268 | CALIBRATION, background |
| CAS A [Chip S3, T=100, Offsets=-2,0,0 First Light] | ACIS-S /NONE | 1/ 3.0/ 2.8 | Aug 20 1999 12:22AM | archived | CAL | 590082 | 214 | CALIBRATION, standard candle |
| PKS0637-752 | ACIS-S /NONE | 5 observations/NA/NA | Aug 20 1999 2:57AM | archived | CAL | 790033-7 | 472-6 | CALIBRATION, focus |
| A2142 | ACIS-S /NONE | 2 observations/NA/NA | Aug 20 1999 11:53AM | archived | CAL | 880146, 880178 | 1196, 1228 | CALIBRATION, background |
| CAS A, CHIP S0, S1, S4, S5 | ACIS-S /NONE | 4 observations/NA/NA | Aug 21 1999 9:35AM | archived | CAL | 590079-80, 590083-84 | 211-2, 215-6 | CALIBRATION, off-axis effective area |
| PG1634+70 | ACIS-S /NONE | 1/ 6.0/ 11.9 | Aug 21 1999 11:16PM | archived | CAL | 780219 | 1269 | CALIBRATION, psf |
| LMC X-1 | ACIS-S /NONE | 1/ 3.0/ 3.0 | Aug 22 1999 3:36AM | archived | CAL | 490002 | 112 | CALIBRATION, psf |
| NGC 2516 | ACIS-S /NONE | 2 observations/NA/NA | Aug 22 1999 5:05AM | archived | CAL | 290035, 280179 | 66, 1229 | CALIBRATION, boresight |
| LMC X-1 | ACIS-S /NONE | 18 observations/NA/NA | Aug 22 1999 11:31AM | archived | CAL | 480018-35 | 1068-85 | CALIBRATION, boresight |
| CAS A, CHIP S3, B, C, D | ACIS-S /NONE | 3 observations/NA/NA | Aug 22 1999 11:59PM | archived | CAL | 590088-90 | 220-2 | CALIBRATION, standard candle |
| CAS A [Chip S2, T=100, Offsets=6,0,0 Std Candle] | ACIS-S /NONE | 1/ 2.0/ 1.8 | Aug 23 1999 2:35AM | archived | CAL | 590081 | 213 | CALIBRATION, standard candle |
| G21.5-0.9 [Chip S3, T=100, Offsets=0,0,0 Std Cand] | ACIS-S /NONE | 2 observations/NA/NA | Aug 23 1999 3:52AM | archived | CAL | 590027, 580180 | 159, 1230 | CALIBRATION, standard candle |
| G21.5-0.9 [Chip S2, T=100, Offsets=6,0,0] | ACIS-S /NONE | 1/ 10.0/ 9.7 | Aug 23 1999 12:56PM | archived | CAL | 590033 | 165 | CALIBRATION, standard candle |
| E0102-72.3 [Chip S3, T=100, Offsets=-1,0,0] | ACIS-S /NONE | 2 observations/NA/NA | Aug 23 1999 4:25PM | archived | CAL | 590006, 580181 | 138, 1231 | CALIBRATION, standard candle |
| LMC X-1 | ACIS-S /NONE | 4 observations/NA/NA | Aug 23 1999 10:36PM | archived | CAL | 480037-40 | 1087-90 | CALIBRATION, chip offset |
| PKS0637-752 | ACIS-S /NONE | 1/ 1.0/ 1 | Aug 24 1999 12:57AM | archived | CAL | 780043 | 1093 | CALIBRATION, SIM translation |
| Blank Sky | ACIS-I /NONE | 10 observations/NA/NA | Aug 24 1999 1:35AM | archived | CAL | 780220-1, 790027-9, 780226-30 | 1270-1, 466-8, 1276-80 | CALIBRATION, focus |
| Triang.Austr. | ACIS-I /NONE | 2 observations/NA/NA | Aug 25 1999 6:04AM | archived | CAL | 880231, 880177 | 1281, 1227 | CALIBRATION, ACIS spectral capability |
| G21.5-0.9, CHIP I0, I1, I2 | ACIS-I /NONE | 3 observations/NA/NA | Aug 25 1999 1:49PM | archived | CAL | 590026, 590028-9 | 158, 160-1 | CALIBRATION, off-axis area |
| CAS A, CHIP I0, I1, I2 | ACIS-I /NONE | 3 observations/NA/NA | Aug 25 1999 11:19PM | archived | CAL | 590075-7 | 207-9 | CALIBRATION, off-axis area |
| PSR B0540-69 | ACIS-I /NONE | 2 observations/NA/NA | Aug 26 1999 2:20AM | archived | CAL | 590001, 580200 | 133, 1250 | CALIBRATION, timing |
| LMC X-1 | ACIS-I /NONE | 4 observations/NA/NA | Aug 26 1999 8:20AM | archived | CAL | 480044-7 | 1094-7 | CALIBRATION, relative detector offset |
| PKS0312-770 | ACIS-I /NONE | 1/ 13.0/ 12.8 | Aug 26 1999 11:34AM | archived | CAL | 790030 | 469 | CALIBRATION, psf |
| NGC 2516 | ACIS-I /NONE | 2 observations/NA/NA | Aug 26 1999 3:37PM | archived | CAL | 290034, 28012 | 65, 1232 | CALIBRATION, boresight |
| E0102-72.3 [Chip I3, T=100, Offsets=-2,2,0 Line R] | ACIS-I /NONE | 2 observations/NA/NA | Aug 27 1999 11:06AM | archived | CAL | 590002, 580184 | 134, 1234 | CALIBRATION, standard candle |
| CAS A [Chip I3, T=100, Offsets=-2,2,0] | ACIS-I /NONE | 4 observations/NA/NA | Aug 27 1999 5:48PM | archived | CAL | 590078, 590085-7 | 210, 217-9 | CALIBRATION, standard candle |
| G21.5-0.9 [Chip I3, T=100, Offsets=-1,1,0 Std Can] | ACIS-I /NONE | 1/ 15.0/ 13.1 | Aug 27 1999 10:32PM | archived | CAL | 590030 | 162 | CALIBRATION, standard candle |
| CAPELLA | ACIS-S /NONE | 1/ 1.0/ 1.2 | Aug 28 1999 3:42AM | archived | CAL | 290021 | 52 | CALIBRATION, pregrating insertion |
| CAPELLA | ACIS-S /NONE | 1/ 5.0/ 7.1 | Aug 28 1999 4:33AM | archived | CAL | 280048 | 1098 | CALIBRATION, pregrating insertion |
| CAPELLA | ACIS-S /HETG | 6 observations/NA/NA | Aug 28 1999 8:07AM | archived | CAL | 280049-51, 280185-7 | 1099-101, 1235-7 | CALIBRATION, HETG plate focus |
| CRAB PULSAR-CC | ACIS-S /HETG | 1/ 5.0/ 5 | Aug 29 1999 9:39PM | archived | CAL | 590038 | 170 | CALIBRATION, timing |
| CRAB PULSAR | ACIS-S /HETG | 1/ 10.0/ 13.4 | Aug 29 1999 9:39PM | archived | CAL | 590036 | 168 | CALIBRATION, cont. source |
| CAPELLA | ACIS-S /HETG | 1/ 0.5/ 2.0 | Aug 30 1999 2:10AM | archived | CAL | 280149 | 1199 | CALIBRATION, confirm grating retraction |
| 3C295 | ACIS-S /NONE | 1/ 20.0/ 19.0 | Aug 30 1999 5:38AM | archived | CAL | 890023 | 578 | CALIBRATION, Science demo. |
| LMC X-1 | HRC-I /NONE | 1/ 15.0/ 13 | Aug 30 1999 1:20PM | archived | CAL | 480150 | 1200 | CALIBRATION, focus |
| N132D | HRC-I /NONE | 1/ 20.0/ 21.8 | Aug 30 1999 5:15PM | archived | CAL | 580232 | 1282 | CALIBRATION, Science demo. |
| LMC X-1 | HRC-I /NONE | 1/ 3.0/ 10.0 | Aug 30 1999 11:40PM | archived | CAL | 480151 | 1201 | CALIBRATION, focus |
| LMC X-1 | HRC-I /NONE | 1/ 3.0/ 3.3 | Aug 31 1999 2:30AM | archived | CAL | 480152 | 1202 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 3.0/ 3.6 | Aug 31 1999 3:30AM | archived | CAL | 480153 | 1203 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 3.0/ 3 | Aug 31 1999 4:30AM | archived | CAL | 480154 | 1204 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 3.0/ 3 | Aug 31 1999 4:40AM | archived | CAL | 480155 | 1205 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 3.0/ 3 | Aug 31 1999 5:40AM | archived | CAL | 480156 | 1206 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 1.0/ 1 | Aug 31 1999 7:10AM | archived | CAL | 480157 | 1207 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 1.0/ 1 | Aug 31 1999 8:00AM | archived | CAL | 480158 | 1208 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 1.0/ 1 | Aug 31 1999 8:30AM | archived | CAL | 480159 | 1209 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 1.0/ 1 | Aug 31 1999 9:00AM | archived | CAL | 480160 | 1210 | Calibration |
| LMC X-1 | HRC-I /NONE | 1/ 10.0/ 10 | Aug 31 1999 9:30AM | archived | CAL | 480246 | 1296 | Calibration |
| PSR B0540-69 | HRC-I /NONE | 1/ 20.0/ 17.7 | Aug 31 1999 12:30PM | archived | CAL | 590000 | 132 | CALIBRATION, timing |
| ArLac | HRC-I /NONE | 9 observations/NA/NA | Aug 31 1999 7:55PM | archived | CAL | 280244-5, 280233-9 | 1294-5, 1283-9 | CALIBRATION, focus |
| MOSAIC BKGD 1-4 | HRC-I /NONE | 4 observations/NA/NA | Sep 1 1999 1:17AM | archived | CAL | 980240-3 | 1290-3 | CALIBRATION |
| N132D | HRC-I /NONE | 1/ 10.0/ 12.1 | Sep 1 1999 11:08PM | archived | CAL | 580247 | 1297 | CALIBRATION, Science demo. |
| HR1099 | HRC-I /NONE | 10 observations/NA/NA | Sep 2 1999 4:50AM | archived | CAL | 280211, 280161-8, 280065 | 1261, 1211-8, 1115 | CALIBRATION, psf |
| NGC 2516 | HRC-I /NONE | 2 observations/NA/NA | Sep 2 1999 12:44PM | archived | CAL | 290036, 280191 | 67, 1241 | CALIBRATION, boresight |
| LMC X-1 | HRC-I /NONE | 4 observations/NA/NA | Sep 2 1999 6:53PM | archived | CAL | 480066-9 | 1116-9 | CALIBRATION, boresight |
| HR1099 | HRC-I /NONE | 33 observations/NA/NA | Sep 2 1999 10:23PM | archived | CAL | 280070-102 | 1120-1152 | CALIBRATION, optical axis |
| CAS A [HRC-I, Offsets=0,0,0] | HRC-I /NONE | 1/ 10.0/ 9.0 | Sep 3 1999 3:30PM | archived | CAL | 590039 | 171 | CALIBRATION, standard candle |
| G21.5-0.9 [HRC-I, Offsets=0,0,0] | HRC-I /NONE | 3 observations/NA/NA | Sep 4 1999 6:00AM | archived | CAL | 590011, 580192, 580248 | 143, 1242, 1298 | CALIBRATION, standard candle |
| LMC X-1 | HRC-S /NONE | 1/ 3.0/ 2.5 | Sep 4 1999 6:15PM | archived | CAL | 480249 | 1299 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 3.0/ 9.8 | Sep 4 1999 6:15PM | archived | CAL | 490016 | 62436 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 3.0/ 0.0 | Sep 4 1999 6:15PM | archived | CAL | 490015 | 62437 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 2.0/ 1.1 | Sep 4 1999 6:15PM | archived | CAL | 490014 | 62438 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 3.0/ 1.0 | Sep 4 1999 6:15PM | archived | CAL | 490013 | 62439 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 2.0/ 1.3 | Sep 4 1999 6:15PM | archived | CAL | 490012 | 62440 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 3.0/ 2.4 | Sep 4 1999 6:15PM | archived | CAL | 490011 | 62441 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 3.0/ 4.8 | Sep 4 1999 6:15PM | archived | CAL | 490010 | 62442 | Calibration |
| LMC X-1 | HRC-S /NONE | 1/ 3.0/ 5 | Sep 4 1999 6:15PM | archived | CAL | 490009 | 62443 | Calibration |
| HR1099 | HRC-S /NONE | 1/ 1.0/ 1 | Sep 5 1999 4:51AM | archived | CAL | 280103 | 1153 | CALIBRATION, shutter focus |
| G21.5-0.9, +/-Y MCP | HRC-S /NONE | 2 observations/NA/NA | Sep 5 1999 7:29AM | archived | CAL | 590019, 590025 | 151, 157 | CALIBRATION, off-axis effective area |
| G21.5-0.9 [HRC-S, Offsets=0,0,0 CENTER MCP] | HRC-S /NONE | 1/ 10.0/ 9.7 | Sep 5 1999 1:29PM | archived | CAL | 590015 | 147 | CALIBRATION, standard candle |
| CAS A, +/-Y MCP | HRC-S /NONE | 2 observations/NA/NA | Sep 5 1999 5:22PM | archived | CAL | 590041-2 | 173-4 | CALIBRATION, off-axis effective area |
| CAS A [HRC-S, Offsets=0,0,0 CENTRAL MCP] | HRC-S /NONE | 1/ 5.0/ 9.4 | Sep 5 1999 6:55PM | archived | CAL | 590040 | 172 | CALIBRATION, standard candle |
| CAPELLA | HRC-S /NONE | 1/ 1.0/ 0.7 | Sep 5 1999 10:10PM | archived | CAL | 280116 | 1166 | Calibration |
| CAPELLA | HRC-S /NONE | 1/ 1.0/ 0.3 | Sep 5 1999 10:40PM | archived | CAL | 280250 | 1300 | Calibration |
| CAPELLA | HRC-S /LETG | 1/ 3.0/ 32.7 | Sep 5 1999 10:40PM | archived | CAL | 290136 | 62435 | Calibration |
| ETA CARINAE | ACIS-I /NONE | 1/ 10.0/ 12 | Sep 6 1999 8:06PM | archived | CAL | 290019 | 50 | CALIBRATION, Science Demo. |
| ETA CARINAE -CC | ACIS-I /NONE | 1/ 10.0/ 9.7 | Sep 6 1999 11:56PM | archived | CAL | 280199 | 1249 | CALIBRATION |
| ETA CARINAE -CC | ACIS-I /NONE | 1/ 10.0/ 11.1 | Sep 7 1999 2:56AM | archived | CAL | 290020 | 51 | CALIBRATION |
| PKS0312-770 | ACIS-I /NONE | 2 observations/NA/NA | Sep 7 1999 6:28AM | archived | CAL | 780054-5 | 1104-5 | CALIBRATION, off-axis psf |
| HR1099 | ACIS-I /NONE | 4 observations/NA/NA | Sep 7 1999 3:07PM | archived | CAL | 280142-5 | 1192-5 | CALIBRATION, off-axis psf |
| PKS0312-770 | ACIS-I /NONE | 5 observations/NA/NA | Sep 7 1999 6:38PM | archived | CAL | 780057-61 | 1107-11 | CALIBRATION, pile up |
| CAPELLA | HRC-S /LETG | 4 observations/NA/NA | Sep 9 1999 1:15PM | archived | CAL | 280117, 280194, 280119, 280196 | 1167, 1244, 1169, 1246 | CALIBRATION, LETG plate focus |
| CAPELLA | HRC-S /LETG | 1/ 3.0/ 11.3 | Sep 9 1999 10:41PM | archived | CAL | 290132 | 62410 | Calibration |
| CEN A | HRC-I /NONE | 1/ 20.0/ 19.6 | Sep 10 1999 8:30AM | archived | CAL | 790024 | 463 | CALIBRATION, Science |
| CEN A | HRC-I /NONE | 1/ 7.0/ 6.8 | Sep 10 1999 2:17PM | archived | CAL | 780203 | 1253 | CALIBRATION, Science |
| CAPELLA | HRC-S /NONE | 1/ 20.0/ 17.3 | Sep 12 1999 4:00AM | archived | CAL | 290022 | 53 | Calibration |
| CAPELLA | HRC-S /NONE | 1/ 3.0/ 25.7 | Sep 12 1999 4:00AM | archived | CAL | 290133 | 62426 | Calibration |
| CAPELLA | HRC-S /LETG | 1/ 3.0/ 11.3 | Sep 12 1999 4:00AM | archived | CAL | 290134 | 62422 | Calibration |
| CAPELLA | HRC-S /LETG | 1/ 3.0/ 14.6 | Sep 12 1999 4:00AM | archived | CAL | 290135 | 62423 | Calibration |
| NGC 2516 | HRC-S /NONE | 1/ 10.0/ 13.2 | Sep 13 1999 4:51AM | archived | CAL | 290037 | 68 | CALIBRATION, Boresight |
| HR1099 | ACIS-S /HETG | 1/ 95.0/ 95.8 | Sep 14 1999 9:30PM | archived | CAL | 290137 | 62538 | Calibration |
| HR1099 | ACIS-S /HETG | 1/ 15.0/ 14.9 | Sep 17 1999 1:00PM | archived | CAL | 280202 | 1252 | CALIBRATION, ELP |
| A401 | ACIS-I /NONE | 1/ 18.2/ 18.2 | Sep 17 1999 9:50PM | archived | GTO | 800026 | 518 | Murray |
| PLEIADES | ACIS-I /NONE | 1/ 36.2/ 34.9 | Sep 18 1999 3:32AM | archived | GTO | 200011 | 13 | Linsky |
| HOLD POS NEAR SEP | ACIS-I /NONE | 1/ 36.0/ 36 | Sep 18 1999 2:31PM | archived | CAL | 980259 | 1309 | Calibration |
| HOLD POS NEAR SEP | ACIS-I /NONE | 1/ 9.0/ 9 | Sep 19 1999 12:40PM | archived | CAL | 980254 | 1304 | Calibration |
| HOLD POS NEAR SEP | ACIS-I /NONE | 1/ 9.0/ 9 | Sep 20 1999 2:00AM | archived | CAL | 980256 | 1306 | Calibration |
| A426 | ACIS-I /NONE | 1/ 5.0/ 5.3 | Sep 20 1999 5:36AM | archived | GTO | 800010 | 502 | Fabian |
| M82 | ACIS-I /NONE | 1/ 34.0/ 33.6 | Sep 20 1999 11:42AM | archived | GTO | 700033 | 361 | Garmire |
| M82 | ACIS-I /NONE | 1/ 16.0/ 15.7 | Sep 20 1999 9:22PM | archived | GTO | 700033 | 1302 | Murray |
| SGR A* | ACIS-I /NONE | 1/ 50.0/ 46.5 | Sep 21 1999 2:59AM | archived | GTO | 600002 | 242 | Garmire |
| 30 DORADUS | ACIS-I /NONE | 1/ 2.0/ 1.0 | Sep 21 1999 8:04PM | archived | GTO | 200020 | 22 | Garmire |
| 30 DORADUS | ACIS-I /NONE | 1/ 28.0/ 25.4 | Sep 21 1999 8:40PM | archived | GTO | 200070 | 62520 | Garmire |
| ABELL 3667 | ACIS-I /NONE | 1/ 50.0/ 45.4 | Sep 22 1999 10:12PM | archived | GTO | 800021 | 513 | Murray |
| SS 433 | ACIS-S /HETG | 1/ 30.0/ 28.9 | Sep 23 1999 12:40PM | archived | GTO | 400019 | 106 | Canizares |
| CYG X-2 | ACIS-S /HETG | 1/ 15.0/ 28.9 | Sep 23 1999 9:33PM | archived | CAL | 480052 | 1102 | CALIBRATION, Science Demo. |
| CAPELLA | ACIS-S /HETG | 1/ 35.0/ 40.9 | Sep 24 1999 6:32AM | archived | CAL | 280053 | 1103 | CALIBRATION, ELP |
| CAPELLA | ACIS-S /HETG | 1/ 27.0/ 27.0 | Sep 25 1999 1:48PM | archived | CAL | 280268 | 1318 | CALIBRATION, ELP |
| 1E 1740.7-2942 | ACIS-S /HETG | 1/ 10.0/ 9.0 | Sep 25 1999 9:51PM | archived | GTO | 400007 | 94 | Garmire |
| RCW 103 | ACIS-I /NONE | 1/ 16.5/ 13.6 | Sep 26 1999 7:22AM | archived | GTO | 500010 | 123 | Garmire |
| E0102-72.3 | ACIS-S /HETG | 1/ 90.0/ 88.2 | Sep 28 1999 10:30PM | archived | GTO | 500007 | 120 | Canizares |
| MS 1137.5+6625 | ACIS-I /NONE | 1/ 120.0/ 119.2 | Sep 30 1999 8:55PM | archived | GTO | 800044 | 536 | VANSPEYBROECK |
| ArLac | HRC-I /NONE | 64 observations/NA/NA | Oct 3 1999 1:30PM | archived | CAL | 280269-332 | 1319-1382 | CALIBRATION, Gain Adjustment |
| ArLac | HRC-I /NONE | 1/ 19.0/ 18.9 | Oct 4 1999 11:00PM | archived | CAL | 270335 | 1385 | Calibration |
| ArLac | HRC-I /NONE | 1/ 1.0/ 1.0 | Oct 4 1999 11:00PM | archived | CAL | 270335 | 62505 | Calibration |
| ArLac | HRC-I /NONE | 1/ 1.0/ 1.1 | Oct 4 1999 11:00PM | archived | CAL | 270335 | 62506 | Calibration |
| ArLac | HRC-I /NONE | 1/ 1.0/ 1.2 | Oct 4 1999 11:00PM | archived | CAL | 270335 | 62507 | Calibration |
| SN 1987A | ACIS-S /HETG | 1/ 75.0/ 69.6 | Oct 6 1999 4:01AM | archived | GTO | 500011 | 1387 | Garmire |
| SN 1987A | ACIS-S /HETG | 1/ 35.0/ 47.9 | Oct 6 1999 4:01AM | archived | GTO | 500011 | 124 | Garmire |
| E0102-72.3 | ACIS-S /HETG | 1/ 50.0/ 49.0 | Oct 8 1999 9:19PM | archived | GTO | 500007 | 968 | Canizares |
| AB DOR | ACIS-S /HETG | 1/ 60.0/ 53.0 | Oct 9 1999 11:38AM | archived | GTO | 200014 | 16 | Linsky |
| NGC 1275 | ACIS-S /HETG | 1/ 50.0/ 53.2 | Oct 10 1999 3:45AM | archived | GTO | 700005 | 333 | Canizares |
| PKS 0745-191 | ACIS-S /HETG | 1/ 9.3/ 9.4 | Oct 11 1999 11:49AM | archived | GTO | 800018 | 1383 | Canizares |
| PSR B0833-45 | ACIS-S /HETG | 1/ 40.0/ 36.0 | Oct 12 1999 12:08AM | archived | GTO | 500018 | 131 | Canizares |
| TRAPEZIUM CLUSTER | ACIS-I /NONE | 1/ 13.7/ 47.4 | Oct 12 1999 10:40AM | archived | GTO | 200016 | 18 | Garmire |
| A2256 | ACIS-I /NONE | 1/ 15.0/ 12.5 | Oct 13 1999 1:18AM | archived | GTO | 880336 | 1386 | Murray |
| M31 TRANSIENT TBD | ACIS-I /NONE | 1/ 10.0/ 12.0 | Oct 13 1999 5:36AM | archived | GTO | 600063 | 303 | Murray |
| PKS 0745-191 | ACIS-S /HETG | 1/ 45.3/ 45.7 | Oct 14 1999 1:58AM | archived | GTO | 800018 | 510 | Canizares |
| A2256 | ACIS-S /NONE | 1/ 11.0/ 11.2 | Oct 14 1999 3:57PM | archived | GTO | 800179 | 965 | Murray |
| AXAF Southern Deep Field - ACIS-I | ACIS-I /NONE | 1/ 44.0/ 43.9 | Oct 14 1999 9:20PM | archived | GTO | 900002 | 581 | GIACCONI |
| A267 | ACIS-I /NONE | 1/ 0.0/ 0.0 | Oct 16 1999 6:31PM | archived | GTO | 800031 | 523 | VANSPEYBROECK |
| A267 | ACIS-I /NONE | 1/ 8.0/ 7.9 | Oct 16 1999 6:42PM | archived | GTO | 800031 | 1448 | VANSPEYBROECK |
| RX J0439.0+0715 | ACIS-I /NONE | 1/ 2.0/ 1.6 | Oct 16 1999 9:51PM | archived | GTO | 800034 | 526 | VANSPEYBROECK |
| RX J0439.0+0715 | ACIS-I /NONE | 1/ 6.3/ 6.3 | Oct 16 1999 10:30PM | archived | GTO | 800034 | 1449 | VANSPEYBROECK |
| Q0836+7104 | ACIS-S /HETG | 1/ 0.1/ 0.1 | Oct 17 1999 1:16AM | archived | GTO | 700006 | 334 | Canizares |
| Q0836+7104 | ACIS-S /HETG | 1/ 61.0/ 62.3 | Oct 17 1999 1:45AM | archived | GTO | 700006 | 1450 | Canizares |
| II PEG (HD 224085) | ACIS-S /HETG | 1/ 1.0/ 0.0 | Oct 17 1999 11:08PM | archived | GTO | 200010 | 12 | Canizares |
| II PEG (HD 224085) | ACIS-S /HETG | 1/ 50.0/ 43.2 | Oct 17 1999 11:32PM | archived | GTO | 200010 | 1451 | Canizares |
| NGC 1399 | ACIS-I /NONE | 1/ 3.5/ 3.5 | Oct 18 1999 2:16PM | archived | GTO | 600080 | 320 | MUSHOTZKY |
| RX J1720.1+2638 | ACIS-I /NONE | 1/ 0.1/ 0.1 | Oct 19 1999 10:16AM | archived | GTO | 800057 | 549 | VANSPEYBROECK |
| RX J1720.1+2638 | ACIS-I /NONE | 1/ 9.0/ 7.8 | Oct 19 1999 10:30AM | archived | GTO | 800057 | 1453 | VANSPEYBROECK |
| ABELL 2218 | ACIS-I /NONE | 1/ 7.0/ 5.9 | Oct 19 1999 1:32PM | archived | GTO | 800061 | 553 | Garmire |
| ABELL 2218 | ACIS-I /NONE | 1/ 13.0/ 11.5 | Oct 19 1999 3:32PM | archived | GTO | 800061 | 1454 | Garmire |
| CYG X-1 | ACIS-S /HETG | 1/ 2.5/ 13.9 | Oct 19 1999 7:35PM | archived | GTO | 400020 | 107 | Canizares |
| CYG X-3 | ACIS-S /HETG | 1/ 2.0/ 1.9 | Oct 20 1999 12:05AM | archived | GTO | 400014 | 101 | BRINKMAN |
| PKS 2155-304 | ACIS-S /HETG | 1/ 40.0/ 39.1 | Oct 20 1999 6:16AM | archived | GTO | 700009 | 337 | Canizares |
| 4U 1636-53 | ACIS-S /HETG | 1/ 30.0/ 29.7 | Oct 20 1999 5:56PM | archived | GTO | 400018 | 105 | Canizares |
| A697 | ACIS-I /NONE | 1/ 10.0/ 8.0 | Oct 21 1999 3:12AM | archived | GTO | 800040 | 532 | VANSPEYBROECK |
| ABELL 370 | ACIS-S /NONE | 1/ 90.0/ 89.1 | Oct 22 1999 5:18PM | archived | GTO | 800023 | 515 | Garmire |
| CL 0107+31 | ACIS-I /NONE | 1/ 55.0/ 54.1 | Oct 23 1999 2:58AM | archived | GTO | 800029 | 521 | VANSPEYBROECK |
| CAS A [HRC-I, Offsets=0,0,0] | HRC-I /NONE | 1/ 10.0/ 10 | Oct 23 1999 6:47PM | archived | CAL | 580359 | 1409 | Calibration |
| RAPID BURSTER | ACIS-S /HETG | 1/ 30.0/ 29.6 | Oct 24 1999 5:01PM | archived | TOO | 400045 | 678 | Lewin |
| G21.5-0.9 [HRC-S, Offsets=23,0,0 -Y MCP] | HRC-S /NONE | 1/ 10.0/ 9.9 | Oct 25 1999 2:01AM | archived | CAL | 580357 | 1407 | Calibration |
| G21.5-0.9 [HRC-I, Offsets=0,0,0] | HRC-I /NONE | 1/ 30.0/ 30.1 | Oct 25 1999 5:02AM | archived | CAL | 580356 | 1406 | Calibration |
| E0102-72.3 [HRC-I, Offsets=-2,2,0] | HRC-I /NONE | 1/ 20.0/ 20.2 | Oct 25 1999 2:01PM | archived | CAL | 580360 | 1410 | Calibration |
| NGC 2516 | HRC-I /NONE | 1/ 20.0/ 20.2 | Oct 25 1999 8:03PM | archived | CAL | 280355 | 1405 | Calibration |
| LMC X-1 | HRC-S /NONE | 5 observations/NA/NA | Oct 26 1999 1:59AM | archived | CAL | 480363-4, 480374-6 | 1413-4, 1424-6 | Calibration |
| HR1099 | HRC-I /LETG | 8 observations/NA/NA | Oct 27 1999 1:34PM | archived | CAL | 280338-45 | 1388-95 | Calibration |
| 2REJ1032+532 | HRC-I /LETG | 1/ 2.0/ 3.2 | Oct 27 1999 7:00PM | archived | CAL | 280346 | 1396 | Calibration |
| 2REJ1032+532,YOFF=2 | HRC-I /LETG | 1/ 0.5/ 0.7 | Oct 27 1999 8:03PM | archived | CAL | 280347 | 1397 | Calibration |
| 2REJ1032+532,YOFF=5 | HRC-I /NONE | 1/ 2.0/ 3.2 | Oct 27 1999 9:06PM | archived | CAL | 280348 | 1398 | Calibration |
| 2REJ1032+532,YOFF=10 | HRC-I /NONE | 1/ 3.0/ 3.2 | Oct 27 1999 10:10PM | archived | CAL | 280349 | 1399 | Calibration |
| 2REJ1032+532,YOFF=15 | HRC-I /NONE | 1/ 2.0/ 3.2 | Oct 27 1999 11:13PM | archived | CAL | 280350 | 1400 | Calibration |
| 2REJ1032+532,ZOFF=2 | HRC-I /NONE | 1/ 2.0/ 3.2 | Oct 28 1999 12:16AM | archived | CAL | 280351 | 1401 | Calibration |
| 2REJ1032+532,ZOFF=5 | HRC-I /NONE | 1/ 2.0/ 3.2 | Oct 28 1999 1:20AM | archived | CAL | 280352 | 1402 | Calibration |
| 2REJ1032+532,ZOFF=10 | HRC-I /NONE | 1/ 2.0/ 3.2 | Oct 28 1999 2:23AM | archived | CAL | 280353 | 1403 | Calibration |
| 2REJ1032+532,ZOFF=15 | HRC-I /NONE | 1/ 3.0/ 3.2 | Oct 28 1999 3:26AM | archived | CAL | 280354 | 1404 | Calibration |
| VEGA | HRC-I /NONE | 5 observations/NA/NA | Oct 28 1999 3:14PM | archived | CAL | 280365-9 | 1415-9 | Calibration |
| SIRIUS B | HRC-S /LETG | 1/ 25.0/ 25.2 | Oct 28 1999 9:35PM | archived | CAL | 280371 | 1421 | Calibration |
| CAPELLA | HRC-S /LETG | 1/ 30.0/ 30.1 | Oct 29 1999 10:53PM | archived | CAL | 280370 | 1420 | Calibration |
| HYDRA A | ACIS-I /NONE | 1/ 20.0/ 24.0 | Oct 30 1999 7:51AM | archived | CAL | 890020 | 575 | Calibration |
| ABELL 754 | ACIS-I /NONE | 1/ 40.0/ 44.7 | Oct 30 1999 3:04PM | archived | CAL | 890022 | 577 | Calibration |
| LMC X-1 | ACIS-I /NONE | 1/ 5.0/ 4.1 | Oct 31 1999 4:09AM | archived | CAL | 480372 | 1422 | Calibration |
| TRAPEZIUM | ACIS-S /HETG | 1/ 40.0/ 50.1 | Oct 31 1999 6:08AM | archived | GTO | 200001 | 3 | Canizares |
| LMC X-1 - I3 | ACIS-S /NONE | 1/ 1.0/ 1.1 | Nov 1 1999 3:23PM | archived | CAL | 480407 | 1457 | Calibration |
| E0102-72.3 [Chip S3, T=110, Offsets=-1,0,0] | ACIS-S /NONE | 1/ 20.0/ 19.1 | Nov 1 1999 4:24PM | archived | CAL | 580373 | 1423 | Calibration |
| SN1999em | ACIS-S /NONE | 1/ 25.0/ 29.6 | Nov 1 1999 10:37PM | archived | TOO | 500059 | 763 | Lewin |
| PICTOR A | ACIS-S /NONE | 1/ 1.0/ 1.3 | Nov 2 1999 7:33AM | archived | GTO | 700017 | 345 | Wilson |
| NGC 2516 - S2 | ACIS-S /NONE | 1/ 10.0/ 9.7 | Nov 2 1999 8:35AM | archived | CAL | 280408 | 1458 | Calibration |
| HYDRA A | ACIS-S /NONE | 1/ 20.0/ 19.7 | Nov 2 1999 11:54AM | archived | CAL | 890021 | 576 | Calibration |
| RX J0911.4+0551 | ACIS-S /NONE | 1/ 30.0/ 29.1 | Nov 2 1999 5:51PM | archived | GTO | 700091 | 419 | Garmire |
| IRAS 09104 | ACIS-S /NONE | 1/ 10.0/ 9.1 | Nov 3 1999 2:39AM | archived | GTO | 800017 | 509 | Fabian |
| NGC 3675 | ACIS-S /NONE | 1/ 2.0/ 1.7 | Nov 3 1999 5:50AM | archived | GTO | 700068 | 396 | Garmire |
| NGC 3486 | ACIS-S /NONE | 1/ 2.0/ 1.7 | Nov 3 1999 6:46AM | archived | GTO | 700065 | 393 | Garmire |
| NGC 3628 | ACIS-S /NONE | 1/ 2.0/ 1.7 | Nov 3 1999 7:42AM | archived | GTO | 700067 | 395 | Garmire |
| NGC 3489 | ACIS-S /NONE | 1/ 2.0/ 1.7 | Nov 3 1999 8:33AM | archived | GTO | 700064 | 392 | Garmire |
| NGC 3627 | ACIS-S /NONE | 1/ 2.0/ 1.7 | Nov 3 1999 9:23AM | archived | GTO | 700066 | 394 | Garmire |
| COMA CLUSTER | ACIS-S /NONE | 1/ 10.0/ 9.6 | Nov 4 1999 6:36AM | archived | CAL | 880036 | 1086 | Calibration |
| COMA CLUSTER | ACIS-S /NONE | 1/ 10.0/ 9.7 | Nov 4 1999 9:36AM | archived | CAL | 890001 | 556 | Calibration |
| NGC 4203 | ACIS-S /NONE | 1/ 2.0/ 1.7 | Nov 4 1999 12:43PM | archived | GTO | 700069 | 397 | Garmire |
| COMA CLUSTER | ACIS-I /NONE | 1/ 10.0/ 9.1 | Nov 4 1999 1:37PM | archived | CAL | 880064 | 1114 | Calibration |
| COMA CLUSTER | ACIS-I /NONE | 1/ 10.0/ 9.7 | Nov 4 1999 4:37PM | archived | CAL | 880063 | 1113 | Calibration |
| COMA CLUSTER | ACIS-I /NONE | 1/ 10.0/ 9.7 | Nov 4 1999 7:37PM | archived | CAL | 880062 | 1112 | Calibration |
| COMA CLUSTER | ACIS-I /NONE | 1/ 10.0/ 8.7 | Nov 4 1999 10:37PM | archived | CAL | 890000 | 555 | Calibration |
| MKN 421 | ACIS-S /HETG | 1/ 30.0/ 26.1 | Nov 5 1999 1:32AM | archived | CAL | 790018 | 457 | Calibration |
| VEGA | ACIS-I /NONE | 1/ 3.0/ 6 | Nov 5 1999 10:04AM | scheduled | CAL | 290005 | 36 | Calibration |
| GS 2000+25 | ACIS-I /NONE | 1/ 20.0/ 19.0 | Nov 5 1999 11:18AM | archived | GTO | 400009 | 96 | Murray |
| A2390 | ACIS-S /NONE | 1/ 10.0/ 9.1 | Nov 5 1999 5:18PM | archived | GTO | 800009 | 501 | Fabian |
| G21.5-0.9 [Chip I3, T=110, Offsets=-1,1,0] | ACIS-I /NONE | 1/ 15.0/ 14.1 | Nov 5 1999 8:37PM | archived | CAL | 580183 | 1233 | Calibration |
| PROCYON | HRC-S /LETG | 1/ 70.0/ 70.1 | Nov 6 1999 9:29PM | archived | CAL | 290032 | 63 | Calibration |
| PROCYON | HRC-S /LETG | 1/ 70.0/ 70.2 | Nov 7 1999 5:09PM | archived | CAL | 280411 | 1461 | Calibration |
| PROCYON | HRC-S /LETG | 1/ 20.0/ 20.9 | Nov 8 1999 12:49PM | archived | CAL | 280174 | 1224 | Calibration |
| CAPELLA | HRC-S /LETG | 1/ 40.0/ 85.2 | Nov 9 1999 1:47PM | archived | CAL | 280198 | 1248 | Calibration |
| CAPELLA | ACIS-S /LETG | 1/ 50.0/ 54.1 | Nov 10 1999 1:40PM | archived | CAL | 290024 | 55 | Calibration |
| CAPELLA | ACIS-S /LETG | 1/ 5.0/ 6.1 | Nov 11 1999 5:10AM | archived | CAL | 280175 | 1225 | Calibration |
| CYG X2, LETG-CC | ACIS-S /LETG | 1/ 3.0/ 6.2 | Nov 11 1999 7:32AM | archived | CAL | 490001 | 111 | Calibration |
| HZ43 | HRC-S /LETG | 1/ 40.0/ 40.2 | Nov 12 1999 4:52AM | archived | CAL | 290028 | 59 | Calibration |
| HZ43 | HRC-S /LETG | 1/ 10.0/ 10.2 | Nov 12 1999 4:12PM | archived | CAL | 280120 | 1170 | Calibration |
| COMA CLUSTER | HRC-I /NONE | 1/ 10.0/ 10.1 | Nov 12 1999 7:17PM | archived | CAL | 890004 | 559 | Calibration |
| COMA CLUSTER | HRC-I /NONE | 1/ 10.0/ 10.2 | Nov 12 1999 10:17PM | archived | CAL | 890003 | 558 | Calibration |
| HUBBLE DEEP FIELD | ACIS-I /NONE | 1/ 59.0/ 50.0 | Nov 13 1999 1:31AM | archived | GTO | 900001 | 580 | Garmire |
| SN1999em | ACIS-S /NONE | 1/ 25.0/ 26.5 | Nov 13 1999 5:03PM | archived | TOO | 500060 | 764 | Lewin |
| HUBBLE DEEP FIELD | ACIS-I /NONE | 1/ 59.0/ 58.1 | Nov 14 1999 8:06PM | archived | GTO | 900027 | 967 | Garmire |
| G21.5-0.9 [Chip I0, T=110, Offsets=7,-6,0] | ACIS-I /NONE | 1/ 10.0/ 9.1 | Nov 15 1999 1:42PM | archived | CAL | 580391 | 1441 | Calibration |
| G21.5-0.9 [Chip I1, T=110, Offsets=-3,-5,0] | ACIS-I /NONE | 1/ 10.0/ 9.7 | Nov 15 1999 4:42PM | archived | CAL | 580392 | 1442 | Calibration |
| G21.5-0.9 [Chip I2, T=110, Offsets=5,3,0] | ACIS-I /NONE | 1/ 10.0/ 9.7 | Nov 15 1999 7:42PM | archived | CAL | 580393 | 1443 | Calibration |
| G21.5-0.9 [Chip S3, T=110, Offsets=-1,0,0] | ACIS-S /NONE | 1/ 16.0/ 15.1 | Nov 15 1999 10:42PM | archived | CAL | 580383 | 1433 | Calibration |
| G21.5-0.9 [Chip S2, T=110, Offsets=6,0,0] | ACIS-S /NONE | 1/ 10.0/ 9.7 | Nov 16 1999 3:22AM | archived | CAL | 580384 | 1434 | Calibration |
| PKS 2126-158 | ACIS-S /NONE | 1/ 25.0/ 36.9 | Nov 16 1999 6:39AM | archived | GTO | 700048 | 376 | Murray |
| NGC 7293 | ACIS-S /NONE | 1/ 38.0/ 37.1 | Nov 17 1999 12:03PM | archived | GO | 200056 | 631 | Chu |
| LEONID ANTI-RADIANT | ACIS-I /NONE | 1/ 25.0/ 20.7 | Nov 17 1999 10:54PM | archived | CAL | 980429 | 1479 | Calibration |
| NGC 7293 | ACIS-S /NONE | 1/ 12.0/ 11.1 | Nov 18 1999 5:11AM | archived | GO | 200056 | 1480 | Chu |
| MS 2137.3-2353 | ACIS-S /NONE | 1/ 50.0/ 44.1 | Nov 18 1999 8:52AM | archived | GO | 800104 | 928 | Wise |
| PKS 2149-306 | ACIS-S /HETG | 1/ 30.0/ 36.0 | Nov 18 1999 9:40PM | archived | GTO | 700008 | 336 | Canizares |
| PKS 2149-306 | ACIS-S /HETG | 1/ 60.0/ 54.7 | Nov 20 1999 2:39AM | archived | GTO | 700008 | 1481 | Canizares |
| CAS A [Chip S0, T=110, Offsets=23,0,0] | ACIS-S /NONE | 1/ 2.5/ 1.5 | Nov 20 1999 6:36PM | archived | CAL | 580385 | 1435 | Calibration |
| CAS A [Chip S1, T=110, Offsets=15,0,0] | ACIS-S /NONE | 1/ 2.5/ 2.0 | Nov 20 1999 7:31PM | archived | CAL | 580386 | 1436 | Calibration |
| CAS A [Chip S4, T=110, Offsets=-10,0,0] | ACIS-S /NONE | 1/ 2.5/ 2.3 | Nov 20 1999 8:26PM | archived | CAL | 580388 | 1438 | Calibration |
| CAS A [Chip S5, T=110, Offsets=-19,0,0] | ACIS-S /NONE | 1/ 2.5/ 2.8 | Nov 20 1999 9:21PM | archived | CAL | 580389 | 1439 | Calibration |
| CAS A [Chip S3, T=110, Offsets=-3,0,0] | ACIS-S /NONE | 1/ 0.6/ 0.6 | Nov 20 1999 10:16PM | archived | CAL | 580390 | 1440 | Calibration |
| CAS A [Chip S2, T=110, Offsets=6,0,0] | ACIS-S /NONE | 1/ 2.0/ 1.7 | Nov 20 1999 11:03PM | archived | CAL | 580387 | 1437 | Calibration |
| CAS A [Chip I0, T=110, Offsets=5,-5,0] | ACIS-I /NONE | 1/ 2.0/ 0.9 | Nov 20 1999 11:50PM | archived | CAL | 580394 | 1444 | Calibration |
| CAS A [Chip I1, T=110, Offsets=-3,-5,0] | ACIS-I /NONE | 1/ 2.0/ 1.9 | Nov 21 1999 12:36AM | archived | CAL | 580395 | 1445 | Calibration |
| CAS A [Chip I2, T=110, Offsets=5,3,0] | ACIS-I /NONE | 1/ 2.0/ 1.8 | Nov 21 1999 1:23AM | archived | CAL | 580396 | 1446 | Calibration |
| CAS A [Chip I3, T=110, Offsets=-2,2,0] | ACIS-I /NONE | 1/ 3.8/ 3.7 | Nov 21 1999 2:10AM | archived | CAL | 580397 | 1447 | Calibration |
| HUBBLE DEEP FIELD | ACIS-I /NONE | 1/ 59.0/ 58.1 | Nov 21 1999 4:24AM | archived | GTO | 900026 | 966 | Garmire |
| A1914 | ACIS-I /NONE | 1/ 10.0/ 8.1 | Nov 21 1999 9:16PM | archived | GTO | 800050 | 542 | VANSPEYBROECK |
| 0540-69.3 | ACIS-S /NONE | 1/ 30.0/ 28.1 | Nov 22 1999 6:15PM | archived | GTO | 500006 | 119 | HOLT |
| AXAF Southern Deep Field - ACIS-I | ACIS-I /NONE | 1/ 100.0/ 124.5 | Nov 23 1999 2:49AM | archived | GTO | 970381 | 1431 | GIACCONI |
| TRAPEZIUM | ACIS-S /HETG | 1/ 33.0/ 31.3 | Nov 24 1999 5:57AM | archived | GTO | 200002 | 4 | Canizares |
| JUPITER | ACIS-S /NONE | 1/ 20.1/ 19.3 | Nov 25 1999 8:13AM | archived | GTO | 100000 | 1 | Garmire |
| JUPITER | ACIS-S /NONE | 1/ 20.1/ 18.8 | Nov 25 1999 2:04PM | archived | GTO | 100000 | 1482 | Garmire |
| JUPITER | ACIS-S /NONE | 1/ 22.6/ 22.3 | Nov 25 1999 7:38PM | archived | DDT | 100010 | 960 | WAITE |
| JUPITER | ACIS-S /NONE | 1/ 22.6/ 22.3 | Nov 26 1999 2:10AM | archived | DDT | 100010 | 1463 | WAITE |
| JUPITER | HRC-S /LETG | 1/ 14.7/ 14.7 | Nov 26 1999 2:35PM | archived | DDT | 100011 | 1464 | WAITE |
| JUPITER | HRC-S /LETG | 1/ 23.1/ 23.4 | Nov 26 1999 8:07PM | archived | DDT | 100011 | 1465 | WAITE |
| HR1099 | HRC-I /NONE | 1/ 2.0/ 2.1 | Nov 27 1999 3:05AM | archived | CAL | 290045 | 1469 | Calibration |
| HR1099 | HRC-I /NONE | 1/ 1.5/ 2.2 | Nov 27 1999 3:56AM | archived | CAL | 290047 | 1471 | Calibration |
| HR1099 | HRC-I /NONE | 1/ 1.4/ 2.2 | Nov 27 1999 4:47AM | archived | CAL | 290046 | 1470 | Calibration |
| HR1099 | HRC-I /NONE | 1/ 2.0/ 2.3 | Nov 27 1999 5:34AM | archived | CAL | 290051 | 1475 | Calibration |
| HR1099 | HRC-I /NONE | 1/ 2.0/ 2.2 | Nov 28 1999 1:07AM | archived | CAL | 290048 | 1472 | Calibration |
| HR1099 | HRC-I /NONE | 1/ 1.4/ 2.2 | Nov 28 1999 1:53AM | archived | CAL | 290044 | 1468 | Calibration |
| HR1099 | HRC-I /NONE | 1/ 1.5/ 2.2 | Nov 28 1999 2:40AM | archived | CAL | 290049 | 1473 | Calibration |
| HR1099 | HRC-I /NONE | 1/ 2.0/ 2.2 | Nov 28 1999 3:27AM | archived | CAL | 290050 | 1474 | Calibration |
| A426 | ACIS-S /NONE | 1/ 10.0/ 9.1 | Nov 28 1999 4:49AM | archived | GTO | 800011 | 503 | Fabian |
| CAS A [HRC-S, Offsets=23,0,0 -Y MCP] | HRC-S /NONE | 1/ 2.0/ 2.1 | Nov 28 1999 8:05AM | archived | CAL | 590107 | 1467 | Calibration |
| 2REJ1032+532 | HRC-I /NONE | 1/ 3.0/ 3.1 | Nov 28 1999 9:15AM | archived | CAL | 290052 | 1476 | Calibration |
| 2REJ1032+532,YOFF=2 | HRC-I /NONE | 1/ 2.1/ 3.3 | Nov 28 1999 10:18AM | archived | CAL | 290053 | 1477 | Calibration |
| PSR B0656+14 | HRC-S /LETG | 1/ 40.0/ 38.1 | Nov 28 1999 11:44AM | archived | GTO | 500017 | 130 | Canizares |
| X0614+091 | HRC-S /LETG | 1/ 26.0/ 26.2 | Nov 28 1999 10:40PM | archived | GTO | 400013 | 100 | BRINKMAN |
| CAL 83 | HRC-S /LETG | 1/ 50.0/ 52.3 | Nov 29 1999 6:56AM | archived | GTO | 300002 | 77 | BRINKMAN |
| CAL 83 | ACIS-S /NONE | 1/ 2.0/ 2.0 | Nov 30 1999 3:03PM | archived | GTO | 300009 | 84 | Murray |
| NGC 526A | ACIS-S /NONE | 1/ 1.0/ 0.8 | Nov 30 1999 4:07PM | archived | GTO | 700013 | 341 | Wilson |
| RX J0019.8+2156 | ACIS-S /NONE | 1/ 1.0/ 1.1 | Nov 30 1999 4:59PM | archived | GTO | 300005 | 80 | Murray |
| M31 - South 2 | HRC-I /NONE | 1/ 1.0/ 1.1 | Nov 30 1999 5:41PM | archived | GTO | 600003 | 243 | Murray |
| M31 - South 1 | HRC-I /NONE | 1/ 1.0/ 1.2 | Nov 30 1999 6:11PM | archived | GTO | 600015 | 255 | Murray |
| M31 - CENTER | HRC-I /NONE | 1/ 1.0/ 1.2 | Nov 30 1999 6:41PM | archived | GTO | 600027 | 267 | Murray |
| M31 - North 2 | HRC-I /NONE | 1/ 1.0/ 1.2 | Nov 30 1999 7:41PM | archived | GTO | 600051 | 291 | Murray |
| 3C 58 | HRC-I /NONE | 1/ 29.0/ 29.2 | Nov 30 1999 8:25PM | archived | GTO | 500016 | 129 | Murray |
| NGC 4038/NGC 4039 | ACIS-S /NONE | 1/ 74.0/ 73.1 | Dec 1 1999 5:53AM | archived | GTO | 600075 | 315 | Murray |
| V1416+4446 | ACIS-I /NONE | 1/ 30.0/ 31.5 | Dec 2 1999 3:04AM | archived | GTO | 800049 | 541 | VANSPEYBROECK |
| S-Z CLUSTER | ACIS-S /NONE | 1/ 100.0/ 99.0 | Dec 3 1999 7:22AM | archived | GTO | 800063 | 325 | MUSHOTZKY |
| NGC 4151 | ACIS-S /NONE | 1/ 1.0/ 2.0 | Dec 4 1999 11:29AM | archived | GTO | 700019 | 347 | Wilson |
| SNR 509.0-68.7 | ACIS-S /NONE | 1/ 40.0/ 37.1 | Dec 4 1999 12:56PM | archived | GTO | 500012 | 125 | Garmire |
| NGC 4636 | ACIS-I /NONE | 1/ 10.0/ 8.5 | Dec 5 1999 12:13AM | archived | GTO | 600084 | 324 | MUSHOTZKY |
| NGC 5128 | ACIS-I /NONE | 1/ 37.0/ 36.1 | Dec 5 1999 9:51PM | archived | GTO | 600076 | 316 | Murray |
| RX J1159+5531 | ACIS-I /NONE | 1/ 20.0/ 19.1 | Dec 6 1999 9:04AM | archived | GO | 800086 | 910 | Vikhlinin |
| LOCKMAN HOLE | HRC-I /NONE | 1/ 100.0/ 104.2 | Dec 6 1999 2:58PM | archived | GTO | 900000 | 579 | Murray |
| LOCKMAN HOLE | HRC-I /NONE | 1/ 75.0/ 71.0 | Dec 8 1999 1:42PM | archived | GTO | 900028 | 1483 | Murray |
| ArLac | HRC-I /NONE | 1/ 1.0/ 1.2 | Dec 9 1999 10:03AM | archived | CAL | 280434 | 1484 | Calibration |
| ArLac | HRC-I /NONE | 1/ 1.0/ 1.2 | Dec 9 1999 10:33AM | archived | CAL |