The Chandra schedule

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 14 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.

Target	Object type	Exposure time	Start	Instrument	Joint with	Turnaround	Constraints	Right Ascension	Declination	Constellation
SN2026sqf	Unidentified	3 hours and 2 minutes	4 days ago	ACIS-S	n/a	Immediate	Time Critical, Monitoring	10^h 38^m 48.0^s	+53° 30' 34.1"	UMa
MACS J0018.5+1626	Cluster of Galaxies	2 hours and 4 minutes	3 days ago	ACIS-I	n/a	None	n/a	00^h 18^m 33.3^s	+16° 26' 35.9"	Psc
SNR G1.9+0.3	SuperNova Remnant	6 hours and 19 minutes	3 days ago	ACIS-S	n/a	None	n/a	17^h 48^m 45.0^s	-27° 10' 00.1"	Sgr
MACS J0018.5+1626	Cluster of Galaxies	3 hours and 35 minutes	3 days ago	ACIS-I	n/a	None	n/a	00^h 18^m 33.3^s	+16° 26' 35.9"	Psc
SDSSJ084755.63+263147.6	Seyfert 1 Galaxy	2 hours and 45 minutes	3 days ago	ACIS-S	n/a	None	n/a	08^h 47^m 55.6^s	+26° 31' 47.7"	Cnc
3CR 17	Seyfert 1 Galaxy	5 hours and 5 minutes	3 days ago	ACIS-S	NRAO	None	n/a	00^h 38^m 20.5^s	-02° 07' 40.5"	Cet
EXO 0748-676	Low Mass X-ray Binary	2 hours and 58 minutes	2 days ago	ACIS-S	Swift	Slow	Time Critical, Monitoring	07^h 48^m 33.7^s	-67° 45' 07.7"	Vol
CAL-ER (41125)		50 minutes	2 days ago	n/a	n/a	n/a	n/a	23^h 53^m 11.1^s	-02° 25' 32.8"	n/a
CAL-ER (41123)		50 minutes	2 days ago	n/a	n/a	n/a	n/a	17^h 40^m 04.8^s	-44° 01' 29.5"	n/a
Perseus Cluster	Cluster of Galaxies	2 hours and 46 minutes	2 days ago	ACIS-I	n/a	None	Time Critical, Monitoring	03^h 19^m 48.2^s	+41° 30' 42.1"	Per
3CR 17	Seyfert 1 Galaxy	3 hours and 35 minutes	2 days ago	ACIS-S	NRAO	None	n/a	00^h 38^m 20.5^s	-02° 07' 40.5"	Cet
SDSS J083721.87+192110.6	Galaxy	3 hours and 16 minutes	1 day ago	ACIS-S	n/a	None	n/a	08^h 37^m 21.9^s	+19° 21' 10.6"	Cnc
PG 1700+518	Seyfert 1 Galaxy	2 hours and 41 minutes	1 day ago	ACIS-S	n/a	None	n/a	17^h 01^m 24.8^s	+51° 49' 20.0"	Dra
Perseus Cluster	Cluster of Galaxies	2 hours and 46 minutes	1 day ago	ACIS-I	n/a	None	Time Critical, Monitoring	03^h 19^m 48.2^s	+41° 30' 42.1"	Per
3CR 17	Seyfert 1 Galaxy	4 hours and 43 minutes	21 hours ago	ACIS-S	NRAO	None	n/a	00^h 38^m 20.5^s	-02° 07' 40.5"	Cet
EXO 0748-676	Low Mass X-ray Binary	6 hours and 40 minutes	16 hours ago	ACIS-S	Swift	Slow	Time Critical, Monitoring	07^h 48^m 33.7^s	-67° 45' 07.7"	Vol
ACT-CL J0123.5-0428	Cluster of Galaxies	4 hours and 10 minutes	9 hours ago	ACIS-S	HST,XMM	None	n/a	01^h 23^m 31.3^s	-04° 28' 30.4"	Cet
msh 11-62	SuperNova Remnant	3 hours and 36 minutes	now	HRC-I	n/a	None	n/a	11^h 11^m 55.2^s	-60° 38' 09.4"	Car
V4641 Sgr S1	Unidentified	2 hours and 46 minutes	in 12 minutes	ACIS-S	n/a	None	n/a	18^h 19^m 21.6^s	-25° 24' 25.8"	Sgr
Perseus Cluster	Cluster of Galaxies	2 hours and 46 minutes	in 4 hours	ACIS-I	n/a	None	Time Critical, Monitoring	03^h 19^m 48.2^s	+41° 30' 42.1"	Per
MACS J0018.5+1626	Cluster of Galaxies	2 hours and 46 minutes	in 7 hours	ACIS-I	n/a	None	n/a	00^h 18^m 33.3^s	+16° 26' 35.9"	Psc
CAL-ER (41122)		1 hour and 40 minutes	in 10 hours	n/a	n/a	n/a	n/a	11^h 57^m 07.2^s	+61° 53' 60.0"	n/a
CAL-ER (41121)		50 minutes	in 13 hours	n/a	n/a	n/a	n/a	06^h 07^m 07.7^s	-29° 59' 55.7"	n/a
CAL-ER (41120)		1 hour and 30 minutes	in 14 hours	n/a	n/a	n/a	n/a	00^h 21^m 38.4^s	-02° 59' 24.0"	n/a
CAL-ER (41119)		50 minutes	in 16 hours	n/a	n/a	n/a	n/a	06^h 07^m 07.7^s	-29° 59' 55.7"	n/a
Perseus Cluster	Cluster of Galaxies	2 hours and 46 minutes	in 1 day	ACIS-I	n/a	None	Time Critical, Monitoring	03^h 19^m 48.2^s	+41° 30' 42.1"	Per
ACT-CL J0123.5-0428	Cluster of Galaxies	3 hours and 53 minutes	in 1 day	ACIS-S	HST,XMM	None	n/a	01^h 23^m 31.3^s	-04° 28' 30.4"	Cet
msh 11-62	SuperNova Remnant	3 hours and 20 minutes	in 1 day	HRC-I	n/a	None	n/a	11^h 11^m 55.2^s	-60° 38' 09.4"	Car
1RXS J021649.0+703552	X-ray source	7 hours and 55 minutes	in 2 days	ACIS-I	n/a	None	n/a	02^h 16^m 49.0^s	+70° 35' 52.1"	Cas
MACS J0018.5+1626	Cluster of Galaxies	2 hours and 46 minutes	in 2 days	ACIS-I	n/a	None	n/a	00^h 18^m 33.3^s	+16° 26' 35.9"	Psc
SDSS J083721.87+192110.6	Galaxy	3 hours and 36 minutes	in 2 days	ACIS-S	n/a	None	n/a	08^h 37^m 21.9^s	+19° 21' 10.6"	Cnc
MACS J0018.5+1626	Cluster of Galaxies	3 hours and 3 minutes	in 2 days	ACIS-I	n/a	None	n/a	00^h 18^m 33.3^s	+16° 26' 35.9"	Psc
SDSS J083721.87+192110.6	Galaxy	3 hours and 36 minutes	in 2 days	ACIS-S	n/a	None	n/a	08^h 37^m 21.9^s	+19° 21' 10.6"	Cnc
RMJ004525.1+100754.8	Unidentified	2 hours and 46 minutes	in 3 days	ACIS-I	n/a	None	n/a	00^h 45^m 25.1^s	+10° 07' 54.8"	Psc
SDSS J083721.87+192110.6	Galaxy	3 hours and 36 minutes	in 3 days	ACIS-S	n/a	None	n/a	08^h 37^m 21.9^s	+19° 21' 10.6"	Cnc
HD 30589	High Proper Motion Star	1 hour and 23 minutes	in 3 days	HRC-I	HST	None	n/a	04^h 49^m 32.1^s	+15° 53' 19.5"	Tau
ACT-CL J0123.5-0428	Cluster of Galaxies	3 hours and 3 minutes	in 3 days	ACIS-S	HST,XMM	None	n/a	01^h 23^m 31.3^s	-04° 28' 30.4"	Cet
CAL-ER (41118)		15 minutes	in 3 days	n/a	n/a	n/a	n/a	06^h 15^m 60.0^s	-30° 00' 00.0"	n/a
CAL-ER (41117)		1 hour and 40 minutes	in 3 days	n/a	n/a	n/a	n/a	11^h 57^m 07.2^s	+61° 53' 60.0"	n/a
CAL-ER (41116)		33 minutes and 20 seconds	in 3 days	n/a	n/a	n/a	n/a	00^h 04^m 24.0^s	+16° 49' 19.2"	n/a
CAL-ER (41115)		1 hour and 30 minutes	in 3 days	n/a	n/a	n/a	n/a	23^h 44^m 05.5^s	+00° 28' 12.0"	n/a
CAL-ER (41114)		50 minutes	in 3 days	n/a	n/a	n/a	n/a	17^h 07^m 60.0^s	+00° 00' 00.0"	n/a
CAL-ER (41113)		20 minutes	in 4 days	n/a	n/a	n/a	n/a	22^h 07^m 02.7^s	+00° 16' 22.4"	n/a