3-day Schedule

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This page shows 3 days of the Chandra schedule, either side of today, and the total science exposure time for these observations is 4 days and 23 hours. The size of the circles indicate the exposure time, and the color shows whether the observation has been done, is running now, or is in the future; the same colors are used in the table below. For repeated observations it can be hard to make out what is going on, since the circles overlap! The shaded regions trace the Milky Way galaxy. The points are plotted in the Equatorial coordinate system, using the Aitoff projection.

TargetObject typeExposure timeStartInstrumentJoint withTurnaroundConstraintsRight AscensionDeclinationConstellation
PJ011646Unidentified4 hours and 26 minutes4 days agoACIS-In/aNonen/a01h 16m 46.6s-24° 37' 02.7"Cet
Perseus clusterCluster of Galaxies11 hours and 47 minutes4 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 30' 42.2"Per
CAL-ER (41756)50 minutes3 days agon/an/an/an/a08h 32m 31.9s+25° 50' 54.7"n/a
CAL-ER (41754)50 minutes3 days agon/an/an/an/a00h 36m 11.4s+28° 25' 26.5"n/a
Orion Nebula snapshot 1Unidentified3 hours and 19 minutes3 days agoACIS-IJWSTNoneTime Critical05h 35m 16.7s-05° 22' 45.0"Ori
2RXS J083147.5+054502Unidentified2 hours and 54 minutes3 days agoACIS-Sn/aNonen/a08h 31m 47.9s+05° 45' 18.7"Hya
PJ011646Unidentified3 hours and 51 minutes3 days agoACIS-In/aNonen/a01h 16m 46.6s-24° 37' 02.7"Cet
Orion Nebula snapshot 2Unidentified3 hours and 15 minutes2 days agoACIS-IJWSTNoneTime Critical05h 35m 16.7s-05° 22' 45.0"Ori
ESO221-009Active Galaxy Nucleus Candidate1 hour and 40 minutes2 days agoACIS-Sn/aNonen/a13h 50m 44.6s-48° 56' 49.0"Cen
Orion Nebula snapshot 3Unidentified3 hours and 2 minutes2 days agoACIS-IJWSTNoneTime Critical05h 35m 16.7s-05° 22' 45.0"Ori
BOSS1348Spectroscopic Binary4 hours and 5 minutes2 days agoACIS-In/aNonen/a13h 48m 14.4s+23° 58' 48.0"Boo
SDSS J101639.87+194048.4Unidentified3 hours and 30 minutes2 days agoACIS-SHSTNonen/a10h 16m 39.9s+19° 40' 48.4"Leo
SN2025seiUnidentified3 hours and 3 minutes2 days agoACIS-Sn/aIntermediateTime Critical, Monitoring17h 48m 59.4s+25° 29' 44.9"Her
SDSSJ093404.74+195617.6Seyfert 1 Galaxy2 hours and 46 minutes1 day agoACIS-Sn/aNonen/a09h 34m 04.7s+19° 56' 17.6"Leo
SN2025seiUnidentified2 hours and 50 minutes1 day agoACIS-Sn/aIntermediateTime Critical, Monitoring17h 48m 59.4s+25° 29' 44.9"Her
Perseus clusterCluster of Galaxies5 hours and 30 minutes1 day agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 30' 42.2"Per
ZwCl 0857.9+2107Unidentified2 hours and 46 minutes22 hours agoACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc
CAL-ER (41752)50 minutes18 hours agon/an/an/an/a09h 04m 24.0s+20° 00' 00.0"n/a
CAL-ER (41750)1 hour and 36 minutes12 hours agon/an/an/an/a02h 00m 00.0s+43° 00' 00.0"n/a
CAL-ER (41749)16 minutes and 40 seconds8 hours agon/an/an/an/a09h 03m 60.0s+20° 00' 00.0"n/a
CAL-ER (41748)16 minutes and 40 seconds7 hours agon/an/an/an/a09h 24m 00.0s+15° 00' 00.0"n/a
SNR G1.9+0.3SuperNova Remnant4 hours and 10 minutes6 hours agoACIS-Sn/aNonen/a17h 48m 45.0s-27° 10' 00.1"Sgr
PG 1004+130Seyfert 1 Galaxy2 hours and 46 minutesnowACIS-Sn/aNonen/a10h 07m 26.1s+12° 48' 56.1"Leo
SNR G1.9+0.3SuperNova Remnant4 hours and 10 minutesin 3 hoursACIS-Sn/aNonen/a17h 48m 45.0s-27° 10' 00.1"Sgr
ESO324-008Emission-line galaxy1 hour and 40 minutesin 7 hoursACIS-Sn/aNonen/a13h 20m 54.0s-39° 16' 43.4"Cen
Orion Nebula snapshot 4Unidentified3 hours and 20 minutesin 9 hoursACIS-IJWSTNoneTime Critical05h 35m 16.7s-05° 22' 45.0"Ori
Orion Nebula snapshot 5Unidentified3 hours and 20 minutesin 13 hoursACIS-IJWSTNoneTime Critical05h 35m 16.7s-05° 22' 45.0"Ori
Perseus clusterCluster of Galaxies5 hours and 8 minutesin 17 hoursACIS-In/aNoneTime Critical03h 19m 48.2s+41° 30' 42.2"Per
Orion Nebula snapshot 6Unidentified3 hours and 3 minutesin 22 hoursACIS-IJWSTNoneTime Critical05h 35m 16.7s-05° 22' 45.0"Ori
SDSSJ085640.78+105755.8Seyfert 1 Galaxy2 hours and 46 minutesin 1 dayACIS-Sn/aNonen/a08h 56m 40.8s+10° 57' 55.8"Cnc
[vD2023]1Unidentified3 hours and 20 minutesin 1 dayACIS-In/aNonen/a02h 41m 45.7s-08° 21' 02.0"Cet
Perseus clusterCluster of Galaxies13 hours and 47 minutesin 1 dayACIS-In/aNoneTime Critical03h 19m 48.2s+41° 30' 42.2"Per
CAL-ER (41747)50 minutesin 2 daysn/an/an/an/a09h 03m 60.0s+20° 00' 00.0"n/a
CAL-ER (41746)50 minutesin 2 daysn/an/an/an/a22h 46m 24.0s+26° 23' 60.0"n/a
CAL-ER (41745)1 hour and 35 minutesin 2 daysn/an/an/an/a02h 00m 00.0s+43° 00' 00.0"n/a
ZwCl 0857.9+2107Unidentified4 hours and 26 minutesin 2 daysACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc
PGC101434Unidentified2 hours and 46 minutesin 3 daysACIS-Sn/aNonen/a00h 32m 18.6s+15° 00' 14.2"Psc
ZwCl 0857.9+2107Unidentified2 hours and 46 minutesin 3 daysACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc
PGC101434Unidentified2 hours and 46 minutesin 3 daysACIS-Sn/aNonen/a00h 32m 18.6s+15° 00' 14.2"Psc