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 5 days. 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
CAL-ER (41947)		15 minutes	3 days ago	n/a	n/a	n/a	n/a	03^h 34^m 25.6^s	+18° 38' 19.3"	n/a
CAL-ER (41946)		15 minutes	3 days ago	n/a	n/a	n/a	n/a	03^h 11^m 20.9^s	+15° 25' 21.4"	n/a
CAL-ER (41955)		15 minutes and 40 seconds	3 days ago	n/a	n/a	n/a	n/a	18^h 30^m 18.0^s	-47° 27' 33.3"	n/a
CAL-ER (41945)		15 minutes	3 days ago	n/a	n/a	n/a	n/a	18^h 30^m 15.6^s	-47° 25' 50.5"	n/a
SN 2018ivc	SuperNova	5 hours and 30 minutes	3 days ago	ACIS-S	NRAO	None	n/a	02^h 42^m 41.3^s	-00° 00' 31.9"	Cet
ESO231-26	Seyfert 2 Galaxy	2 hours and 43 minutes	3 days ago	ACIS-S	n/a	None	n/a	19^h 13^m 14.7^s	-50° 10' 58.3"	Tel
SN 2018ivc	SuperNova	4 hours and 38 minutes	3 days ago	ACIS-S	NRAO	None	n/a	02^h 42^m 41.3^s	-00° 00' 31.9"	Cet
WISE J121857.42+103551.2	Unidentified	3 hours and 45 minutes	3 days ago	ACIS-S	n/a	None	Time Critical	12^h 18^m 57.4^s	+10° 35' 51.3"	Vir
ZTF J0425+3858	Cataclysmic Binary	5 hours and 30 minutes	2 days ago	ACIS-S	n/a	None	n/a	04^h 25^m 50.2^s	+38° 58' 57.6"	Per
Center of COSMOS-Web	Unidentified	10 hours and 26 minutes	2 days ago	ACIS-I	n/a	None	n/a	10^h 00^m 20.9^s	+02° 23' 17.6"	Sex
Perseus cluster	Cluster of Galaxies	4 hours and 15 minutes	2 days ago	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
WISE J121857.42+103551.2	Unidentified	3 hours and 52 minutes	2 days ago	ACIS-S	n/a	None	Time Critical	12^h 18^m 57.4^s	+10° 35' 51.3"	Vir
Perseus cluster	Cluster of Galaxies	3 hours and 28 minutes	1 day ago	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
Abell 2255	Cluster of Galaxies	4 hours and 26 minutes	15 hours ago	ACIS-I	n/a	None	n/a	17^h 12^m 50.0^s	+64° 03' 10.6"	Dra
Ton S180	Seyfert 1 Galaxy	11 hours and 6 minutes	now	ACIS-I	n/a	None	n/a	00^h 57^m 20.2^s	-22° 22' 56.6"	Cet
CD-45 14955B	Low-mass Star	1 hour and 23 minutes	in 1 hour	ACIS-S	n/a	None	n/a	23^h 11^m 53.7^s	-45° 08' 01.9"	Gru
Abell 2255	Cluster of Galaxies	3 hours and 53 minutes	in 3 hours	ACIS-I	n/a	None	n/a	17^h 12^m 50.0^s	+64° 03' 10.6"	Dra
B2.4 0357+23	Radio Source	4 hours and 26 minutes	in 8 hours	ACIS-S	n/a	None	n/a	04^h 00^m 34.4^s	+23° 39' 18.5"	Tau
CFHQS J142952+544717	Quasar	6 hours and 56 minutes	in 13 hours	ACIS-S	n/a	None	n/a	14^h 29^m 52.2^s	+54° 47' 17.7"	Boo
Perseus cluster	Cluster of Galaxies	4 hours and 40 minutes	in 20 hours	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
CFHQS J142952+544717	Quasar	4 hours and 10 minutes	in 1 day	ACIS-S	n/a	None	n/a	14^h 29^m 52.2^s	+54° 47' 17.7"	Boo
SDSS J014837.63+060020.0	Quasar	5 hours and 30 minutes	in 1 day	ACIS-I	n/a	None	n/a	01^h 48^m 37.6^s	+06° 00' 20.0"	Psc
CAL-ER (41944)		50 minutes	in 1 day	n/a	n/a	n/a	n/a	20^h 00^m 00.0^s	-30° 00' 00.0"	n/a
CAL-ER (41943)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	03^h 13^m 33.7^s	+16° 35' 04.6"	n/a
CAL-ER (41942)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	03^h 32^m 55.9^s	+26° 42' 32.4"	n/a
CAL-ER (41941)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	18^h 23^m 60.0^s	+62° 00' 00.0"	n/a
CAL-ER (41940)		28 minutes and 20 seconds	in 2 days	n/a	n/a	n/a	n/a	18^h 23^m 60.0^s	+62° 00' 00.0"	n/a
CAL-ER (41939)		15 minutes	in 2 days	n/a	n/a	n/a	n/a	18^h 23^m 60.0^s	+62° 00' 00.0"	n/a
CAL-ER (41938)		15 minutes	in 2 days	n/a	n/a	n/a	n/a	03^h 44^m 00.0^s	+23° 00' 00.0"	n/a
CAL-ER (41937)		15 minutes	in 2 days	n/a	n/a	n/a	n/a	03^h 56^m 30.5^s	+18° 51' 57.6"	n/a
PSR J1101-6101	Gamma-ray Source	5 hours and 8 minutes	in 2 days	ACIS-I	n/a	None	Time Critical	11^h 01^m 45.1^s	-61° 01' 40.3"	Car
CAL-ER (41936)		15 minutes	in 2 days	n/a	n/a	n/a	n/a	11^h 39^m 60.0^s	+55° 00' 00.0"	n/a
Perseus cluster	Cluster of Galaxies	3 hours and 31 minutes	in 2 days	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
CAL-ER (41935)		15 minutes	in 2 days	n/a	n/a	n/a	n/a	11^h 39^m 60.0^s	+55° 00' 00.0"	n/a
PSR J1101-6101	Gamma-ray Source	3 hours and 8 minutes	in 2 days	ACIS-I	n/a	None	Time Critical	11^h 01^m 45.1^s	-61° 01' 40.3"	Car
CAL-ER (41934)		15 minutes	in 3 days	n/a	n/a	n/a	n/a	11^h 39^m 60.0^s	+55° 00' 00.0"	n/a
Perseus cluster	Cluster of Galaxies	3 hours and 56 minutes	in 3 days	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
ACT-CL J1032.8+1310	Cluster of Galaxies	6 hours and 6 minutes	in 3 days	ACIS-S	n/a	None	n/a	10^h 32^m 54.1^s	+13° 10' 44.4"	Leo
Perseus cluster	Cluster of Galaxies	3 hours and 58 minutes	in 3 days	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
SDSS J125354.49+262435.6	Quasar Candidate	3 hours and 53 minutes	in 3 days	ACIS-S	n/a	None	n/a	12^h 53^m 54.5^s	+26° 24' 35.6"	Com