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 5 days and 7 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
Perseus cluster NUnidentified7 hours and 58 minutes4 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 35' 22.8"Per
SDSSJ220153.56-083443.7Seyfert 1 Galaxy3 hours and 2 minutes4 days agoACIS-Sn/aNonen/a22h 01m 53.6s-08° 34' 43.7"Aqr
Perseus cluster NUnidentified4 hours and 51 minutes4 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 35' 22.8"Per
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 36 minutes3 days agoACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
CAL-ER (41235)1 hour and 56 minutes3 days agon/an/an/an/a05h 31m 54.8s+02° 49' 08.1"n/a
Perseus cluster SUnidentified7 hours and 25 minutes3 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 3 minutes2 days agoACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
Perseus cluster SUnidentified9 hours and 4 minutes2 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 37 minutes2 days agoACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
TDE 2025aarmUnidentified4 hours and 8 minutes1 day agoACIS-Sn/aImmediateTime Critical04h 32m 12.4s-05° 22' 39.6"Eri
SDSSJ222203.73-092712.0Seyfert 1 Galaxy2 hours and 54 minutes1 day agoACIS-Sn/aNonen/a22h 22m 03.7s-09° 27' 12.1"Aqr
Perseus cluster SUnidentified8 hours and 20 minutes1 day agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
PSO J308.0416-21.2339Quasar4 hours and 26 minutes16 hours agoACIS-Sn/aNonen/a20h 32m 10.0s-21° 14' 02.4"Cap
CAL-ER (41225)2 hours and 13 minutes11 hours agon/an/an/an/a13h 02m 20.6s-17° 50' 35.2"n/a
CAL-ER (41224)50 minutes8 hours agon/an/an/an/a21h 14m 28.4s-17° 52' 52.3"n/a
CAL-ER (41223)50 minutes6 hours agon/an/an/an/a14h 30m 36.0s-20° 38' 38.4"n/a
CAL-ER (41222)15 minutesnown/an/an/an/a21h 14m 28.4s-17° 52' 52.3"n/a
CAL-ER (41221)15 minutesin 27 minutesn/an/an/an/a21h 53m 01.0s-10° 02' 53.2"n/a
Perseus cluster SUnidentified9 hours and 43 minutesin 1 hourACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
Mrk915Seyfert 2 Galaxy2 hours and 46 minutesin 11 hoursACIS-Sn/aNonen/a22h 36m 46.5s-12° 32' 42.8"Aqr
EP J223759.5+531421Unidentified5 hours and 33 minutesin 14 hoursACIS-Sn/aImmediateTime Critical, Monitoring22h 37m 59.5s+53° 14' 21.0"Lac
Perseus cluster NUnidentified3 hours and 36 minutesin 20 hoursACIS-In/aNoneTime Critical03h 19m 48.2s+41° 35' 22.8"Per
NGC 424Seyfert 1 Galaxy8 hours and 20 minutesin 1 dayACIS-Sn/aNonen/a01h 11m 27.6s-38° 05' 00.4"Scl
SWIFT J2157.4-3316X-ray Source2 hours and 46 minutesin 1 dayACIS-In/aNonen/a21h 57m 26.1s-33° 15' 50.4"PsA
TWA 7T Tau-type Star4 hours and 10 minutesin 1 dayHRC-I with High Energy Transmission Grating (HETG)n/aNoneTime Critical10h 42m 29.9s-33° 40' 16.6"Ant
NGC 7213Seyfert 1 Galaxy3 hours and 20 minutesin 2 daysACIS-S with High Energy Transmission Grating (HETG)n/aNonen/a22h 09m 16.2s-47° 10' 00.1"Gru
[vD2023]1Unidentified8 hours and 20 minutesin 2 daysACIS-In/aNonen/a02h 41m 45.7s-08° 21' 02.0"Cet
CAL-ER (41220)50 minutesin 2 daysn/an/an/an/a22h 06m 36.0s-14° 41' 60.0"n/a
CAL-ER (41219)50 minutesin 2 daysn/an/an/an/a21h 32m 24.0s-12° 54' 00.0"n/a
CAL-ER (41218)50 minutesin 2 daysn/an/an/an/a13h 31m 60.0s+28° 00' 00.0"n/a
CAL-ER (41217)50 minutesin 3 daysn/an/an/an/a21h 32m 24.0s-12° 54' 00.0"n/a
MaNGA 8982-9101Emission-line galaxy3 hours and 20 minutesin 3 daysACIS-Sn/aNonen/a13h 26m 51.3s+26° 35' 28.5"Com
TIC466376085High Proper Motion Star2 hours and 20 minutesin 3 daysHRC-In/aNonen/a21h 47m 26.5s+06° 36' 17.5"Peg
TV CassiopeiaSpectroscopic Binary11 hours and 6 minutesin 3 daysACIS-S with High Energy Transmission Grating (HETG)n/aNonen/a00h 19m 18.8s+59° 08' 20.5"Cas