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 22 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
SDSS J125354.49+262435.6Quasar Candidate3 hours and 35 minutes3 days agoACIS-Sn/aNonen/a12h 53m 54.5s+26° 24' 35.6"Com
PSO J308.0416-21.2339Quasar3 hours and 51 minutes3 days agoACIS-Sn/aNonen/a20h 32m 10.0s-21° 14' 02.4"Cap
1RXS J161700.0-313639High Proper Motion Star5 hours and 28 minutes3 days agoACIS-Sn/aNonen/a16h 16m 58.9s-31° 36' 37.8"Sco
NGC 1358Seyfert 2 Galaxy4 hours and 18 minutes2 days agoACIS-SNuSTARNoneTime Critical, Monitoring03h 33m 39.7s-05° 05' 22.2"Eri
NGC 1358Seyfert 2 Galaxy4 hours and 5 minutes2 days agoACIS-SNuSTARNoneTime Critical, Monitoring03h 33m 39.7s-05° 05' 22.2"Eri
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 1 minute2 days agoACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
Perseus cluster NUnidentified7 hours and 58 minutes2 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 35' 22.8"Per
SDSSJ220153.56-083443.7Seyfert 1 Galaxy3 hours and 2 minutes2 days agoACIS-Sn/aNonen/a22h 01m 53.6s-08° 34' 43.7"Aqr
Perseus cluster NUnidentified5 hours and 16 minutes1 day agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 35' 22.8"Per
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 36 minutes1 day agoACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
CAL-ER (41235)1 hour and 56 minutes24 hours agon/an/an/an/a05h 31m 60.0s+02° 47' 60.0"n/a
CAL-ER (41234)50 minutes21 hours agon/an/an/an/a22h 08m 05.0s-16° 38' 40.2"n/a
CAL-ER (41233)50 minutes19 hours agon/an/an/an/a21h 25m 36.0s-11° 35' 09.6"n/a
CAL-ER (41232)50 minutes16 hours agon/an/an/an/a12h 53m 43.2s+46° 33' 21.6"n/a
CAL-ER (41231)15 minutes12 hours agon/an/an/an/a21h 13m 39.4s-07° 39' 00.0"n/a
CAL-ER (41230)11 hours agon/an/an/an/a23h 34m 56.9s+39° 09' 20.9"n/a
Perseus cluster SUnidentified7 hours and 46 minutes11 hours agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
CAL-ER (41229)3 hours agon/an/an/an/a01h 12m 03.3s+12° 13' 16.3"n/a
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 20 minutesnowACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
CAL-ER (41228)in 1 hourn/an/an/an/a23h 30m 01.2s+38° 45' 29.2"n/a
Perseus cluster SUnidentified9 hours and 43 minutesin 2 hoursACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
CAL-ER (41227)in 11 hoursn/an/an/an/a23h 30m 01.2s+38° 45' 29.2"n/a
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 53 minutesin 12 hoursACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
TDE 2025aarmUnidentified4 hours and 10 minutesin 16 hoursACIS-Sn/aImmediateTime Critical04h 32m 12.4s-05° 22' 39.6"Eri
SDSSJ222203.73-092712.0Seyfert 1 Galaxy2 hours and 46 minutesin 21 hoursACIS-Sn/aNonen/a22h 22m 03.7s-09° 27' 12.1"Aqr
Perseus cluster SUnidentified8 hours and 20 minutesin 1 dayACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
CAL-ER (41226)15 minutesin 1 dayn/an/an/an/a15h 34m 20.4s-32° 27' 00.0"n/a
PSO J308.0416-21.2339Quasar4 hours and 26 minutesin 1 dayACIS-Sn/aNonen/a20h 32m 10.0s-21° 14' 02.4"Cap
CAL-ER (41225)2 hours and 13 minutesin 2 daysn/an/an/an/a13h 02m 20.6s-17° 50' 35.2"n/a
CAL-ER (41224)50 minutesin 2 daysn/an/an/an/a21h 14m 28.4s-17° 52' 52.3"n/a
CAL-ER (41223)50 minutesin 2 daysn/an/an/an/a14h 30m 36.0s-20° 38' 38.4"n/a
CAL-ER (41222)15 minutesin 2 daysn/an/an/an/a21h 14m 28.4s-17° 52' 52.3"n/a
CAL-ER (41221)15 minutesin 2 daysn/an/an/an/a21h 53m 01.0s-10° 02' 53.2"n/a
Perseus cluster SUnidentified9 hours and 43 minutesin 2 daysACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
Mrk915Seyfert 2 Galaxy2 hours and 46 minutesin 3 daysACIS-Sn/aNonen/a22h 36m 46.5s-12° 32' 42.8"Aqr
EP J223759.5+531421Unidentified5 hours and 33 minutesin 3 daysACIS-Sn/aImmediateTime Critical, Monitoring22h 37m 59.5s+53° 14' 21.0"Lac
Perseus cluster NUnidentified3 hours and 36 minutesin 3 daysACIS-In/aNoneTime Critical03h 19m 48.2s+41° 35' 22.8"Per
NGC 424Seyfert 1 Galaxy8 hours and 20 minutesin 3 daysACIS-Sn/aNonen/a01h 11m 27.6s-38° 05' 00.4"Scl