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 3 days and 8 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
GRB251129AUnidentified2 hours and 45 minutes3 days agoACIS-Sn/aSlown/a14h 57m 18.9s+79° 17' 34.7"UMi
PSO J308.0416-21.2339Quasar5 hours and 27 minutes3 days agoACIS-Sn/aNonen/a20h 32m 10.0s-21° 14' 02.4"Cap
SDSS J122558.56+042826.3Active Galaxy Nucleus Candidate6 hours and 19 minutes3 days agoACIS-Sn/aNonen/a12h 25m 58.6s+04° 28' 26.4"Vir
PSO J308.0416-21.2339Quasar4 hours and 24 minutes3 days agoACIS-Sn/aNonen/a20h 32m 10.0s-21° 14' 02.4"Cap
ZTF26aavrgawUnidentified6 hours and 52 minutes2 days agoACIS-Sn/aSlowTime Critical, Monitoring14h 43m 37.1s+58° 53' 08.1"Dra
SNR G1.9+0.3SuperNova Remnant3 hours and 9 minutes2 days agoACIS-Sn/aNonen/a17h 48m 45.0s-27° 10' 00.1"Sgr
CAL-ER (41291)15 minutes and 40 seconds2 days agon/an/an/an/a09h 27m 07.3s-28° 43' 25.6"n/a
ZTF26aavrgawUnidentified6 hours and 40 minutes1 day agoACIS-Sn/aSlowTime Critical, Monitoring14h 43m 37.1s+58° 53' 08.1"Dra
CIZAJ1955.8+0215Unidentified2 hours and 46 minutes1 day agoACIS-In/aNonen/a19h 55m 48.2s+02° 15' 21.0"Aql
1eRASS J120806.9+291707Unidentified31 minutes and 40 seconds23 hours agoACIS-Sn/aNonen/a12h 08m 07.0s+29° 17' 07.8"Com
PSZ2G144.99-24.64Cluster of Galaxies2 hours and 40 minutes22 hours agoACIS-In/aNonen/a02h 28m 45.4s+34° 01' 37.2"Tri
Gaia DR2 6885342959337741184High Proper Motion Star2 hours and 46 minutes19 hours agoACIS-Sn/aNonen/a21h 07m 10.4s-13° 55' 22.5"Aqr
Perseus cluster SUnidentified6 hours and 23 minutes15 hours agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
PSO J308.0416-21.2339Quasar2 hours and 55 minutes7 hours agoACIS-Sn/aNonen/a20h 32m 10.0s-21° 14' 02.4"Cap
CAL-ER (41284)15 minutes4 hours agon/an/an/an/a11h 35m 60.0s-36° 00' 00.0"n/a
Perseus cluster SUnidentified5 hours and 50 minutesnowACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
CAL-ER (41283)in 3 hoursn/an/an/an/a01h 06m 00.0s-02° 42' 00.0"n/a
SWIFT J2105.1-2106Unidentified2 hours and 46 minutesin 4 hoursACIS-In/aNonen/a21h 05m 03.5s-21° 03' 54.1"Cap
CAL-ER (41282)in 7 hoursn/an/an/an/a21h 29m 12.0s-11° 35' 60.0"n/a
Perseus cluster SUnidentified5 hours and 33 minutesin 8 hoursACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
CAL-ER (41281)15 minutesin 14 hoursn/an/an/an/a22h 21m 11.0s+05° 55' 46.2"n/a
SNR G1.9+0.3SuperNova Remnant2 hours and 38 minutesin 15 hoursACIS-Sn/aNonen/a17h 48m 45.0s-27° 10' 00.1"Sgr
CAL-ER (41280)50 minutesin 18 hoursn/an/an/an/a20h 29m 36.0s-15° 24' 00.0"n/a
CAL-ER (41279)50 minutesin 19 hoursn/an/an/an/a16h 52m 49.0s+35° 30' 41.4"n/a
CAL-ER (41278)1 hour and 28 minutesin 23 hoursn/an/an/an/a13h 44m 48.0s-26° 00' 00.0"n/a
CAL-ER (41277)15 minutesin 1 dayn/an/an/an/a09h 12m 54.2s+69° 45' 38.9"n/a
CAL-ER (41276)15 minutesin 1 dayn/an/an/an/a05h 29m 46.1s+38° 50' 59.6"n/a
CAL-ER (41275)15 minutesin 1 dayn/an/an/an/a20h 56m 48.0s-15° 18' 00.0"n/a
Perseus cluster SUnidentified6 hours and 56 minutesin 1 dayACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
CAL-ER (41274)15 minutesin 2 daysn/an/an/an/a20h 56m 48.0s-15° 18' 00.0"n/a
Perseus cluster SUnidentified2 hours and 46 minutesin 2 daysACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per