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 11 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
GRB260114AUnidentified6 hours and 52 minutes3 days agoACIS-SNRAO,JWSTIntermediateTime Critical, Monitoring04h 58m 23.5s-08° 00' 51.9"Eri
BOSS0210WUnidentified2 hours and 46 minutes3 days agoACIS-In/aNonen/a02h 10m 60.0s+00° 46' 48.0"Cet
Abell 795Cluster of Galaxies2 hours and 45 minutes3 days agoACIS-Sn/aNonen/a09h 24m 05.3s+14° 10' 21.5"Leo
SN2025seiUnidentified3 hours and 9 minutes2 days agoACIS-Sn/aIntermediateTime Critical, Monitoring17h 48m 59.4s+25° 29' 44.9"Her
MKN421BL Lac - type object4 hours and 7 minutes2 days agoACIS-S with Low Energy Transmission Grating (LETG)n/aNoneTime Critical, Monitoring11h 04m 27.2s+38° 12' 31.7"UMa
CAL-ER (41776)15 minutes and 40 seconds2 days agon/an/an/an/a05h 02m 52.8s+15° 24' 57.4"n/a
SDSS J014837.63+060020.0Quasar4 hours and 8 minutes2 days agoACIS-In/aNonen/a01h 48m 37.6s+06° 00' 20.0"Psc
CAL-ER (41772)2 days agon/an/an/an/a04h 09m 42.8s+72° 05' 04.6"n/a
MKN421BL Lac - type object4 hours and 4 minutes2 days agoACIS-S with Low Energy Transmission Grating (LETG)n/aNoneTime Critical, Monitoring11h 04m 27.2s+38° 12' 31.7"UMa
CAL-ER (41771)2 days agon/an/an/an/a04h 09m 42.8s+72° 05' 04.6"n/a
SDSS J014837.63+060020.0Quasar4 hours and 9 minutes2 days agoACIS-In/aNonen/a01h 48m 37.6s+06° 00' 20.0"Psc
CAL-ER (41770)15 minutes1 day agon/an/an/an/a14h 43m 14.3s+60° 39' 19.1"n/a
ZwCl 0857.9+2107Unidentified2 hours and 45 minutes1 day agoACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc
SN2025seiUnidentified2 hours and 33 minutes1 day agoACIS-Sn/aIntermediateTime Critical, Monitoring17h 48m 59.4s+25° 29' 44.9"Her
CAL-ER (41769)50 minutes1 day agon/an/an/an/a08h 47m 51.0s+28° 47' 21.8"n/a
CAL-ER (41768)50 minutes24 hours agon/an/an/an/a07h 34m 18.5s+33° 18' 02.9"n/a
CAL-ER (41767)50 minutes21 hours agon/an/an/an/a02h 47m 36.0s+48° 36' 00.0"n/a
CAL-ER (41766)16 minutes and 40 seconds18 hours agon/an/an/an/a17h 58m 24.2s+29° 36' 41.8"n/a
NGC4496AGalaxy in Pair of Galaxies8 hours and 20 minutes15 hours agoACIS-Sn/aNonen/a12h 31m 39.2s+03° 56' 22.6"Vir
UGC 05086Low Surface Brightness Galaxy2 hours and 46 minutes6 hours agoACIS-In/aNonen/a09h 32m 48.8s+21° 27' 56.3"Leo
SN2025seiUnidentified2 hours and 31 minutesnowACIS-Sn/aIntermediateTime Critical, Monitoring17h 48m 59.4s+25° 29' 44.9"Her
PSR J1101-6101Gamma-ray Source8 hours and 23 minutesin 46 minutesACIS-In/aNoneTime Critical11h 01m 45.1s-61° 01' 40.3"Car
CAL-ER (41765)in 9 hoursn/an/an/an/a11h 03m 45.5s-27° 14' 02.4"n/a
ZwCl 0857.9+2107Unidentified2 hours and 46 minutesin 10 hoursACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc
NGC5728Seyfert 2 Galaxy2 hours and 31 minutesin 13 hoursACIS-Sn/aNonen/a14h 42m 23.9s-17° 15' 11.2"Lib
CAL-ER (41764)15 minutesin 17 hoursn/an/an/an/a02h 38m 22.7s-24° 03' 14.4"n/a
GRB260114AUnidentified6 hours and 56 minutesin 18 hoursACIS-SNRAO,JWSTIntermediateTime Critical, Monitoring04h 58m 23.5s-08° 00' 51.9"Eri
Gaia DR2 675007406816259712High Proper Motion Star2 hours and 46 minutesin 1 dayACIS-Sn/aNonen/a07h 52m 59.6s+22° 33' 23.1"Gem
GRB260114AUnidentified6 hours and 56 minutesin 1 dayACIS-SNRAO,JWSTIntermediateTime Critical, Monitoring04h 58m 23.5s-08° 00' 51.9"Eri
CAL-ER (41763)20 minutesin 2 daysn/an/an/an/a08h 18m 50.5s+21° 45' 50.0"n/a
CAL-ER (41762)50 minutesin 2 daysn/an/an/an/a02h 07m 60.0s+40° 00' 00.0"n/a
CAL-ER (41761)15 minutesin 2 daysn/an/an/an/a16h 40m 00.0s+13° 00' 00.0"n/a
ZwCl 0857.9+2107Unidentified3 hours and 20 minutesin 2 daysACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc
Hercules AActive Galaxy Nucleus5 hoursin 2 daysACIS-Sn/aNonen/a16h 51m 08.2s+04° 59' 33.8"Her
ZwCl 0857.9+2107Unidentified3 hours and 53 minutesin 2 daysACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc
2MASX J13435300+8035495Seyfert 2 Galaxy2 hours and 46 minutesin 3 daysACIS-Sn/aNonen/a13h 43m 52.9s+80° 35' 49.4"Cam
X-ray blank skyUnidentified1 hour and 43 minutesin 3 daysHRC-Sn/aNonen/a16h 07m 60.0s-48° 27' 00.0"Nor
NGC5134Emission-line galaxy6 hours and 6 minutesin 3 daysACIS-Sn/aNonen/a13h 25m 18.6s-21° 08' 02.8"Vir
ZwCl 0857.9+2107Unidentified3 hours and 36 minutesin 3 daysACIS-SNRAONonen/a09h 00m 36.8s+20° 53' 40.1"Cnc