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 and 2 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
CAL-ER (42527)		16 minutes and 40 seconds	3 days ago	n/a	n/a	n/a	n/a	12^h 47^m 32.3^s	-03° 21' 28.2"	n/a
NGC 4102	Seyfert 2 Galaxy	12 hours and 29 minutes	3 days ago	ACIS-S	HST	None	n/a	12^h 06^m 23.1^s	+52° 42' 39.4"	UMa
NGC 2440	Planetary Nebula	3 hours and 48 minutes	2 days ago	HRC-I	n/a	None	Time Critical	07^h 41^m 55.4^s	-18° 12' 31.4"	Pup
M 87	Brightest galaxy in a Cluster (BCG)	1 hour and 18 minutes	2 days ago	ACIS-S	n/a	None	Time Critical	12^h 30^m 49.4^s	+12° 23' 28.0"	Vir
Perseus cluster	Cluster of Galaxies	3 hours and 59 minutes	2 days ago	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
PSZ2G284.59+70.84	Cluster of Galaxies	2 hours and 5 minutes	2 days ago	ACIS-I	n/a	None	n/a	12^h 27^m 27.4^s	+08° 49' 57.2"	Vir
Perseus cluster	Cluster of Galaxies	4 hours and 40 minutes	2 days ago	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 30' 42.2"	Per
NGC4656	Galaxy in Pair of Galaxies	6 hours and 47 minutes	2 days ago	ACIS-I	n/a	None	n/a	12^h 43^m 57.5^s	+32° 10' 13.3"	CVn
4FGL J1809.2-2726	Gamma-ray Source	1 hour and 23 minutes	1 day ago	ACIS-I	n/a	None	Time Critical, Monitoring, Constrained	18^h 09^m 13.8^s	-27° 26' 44.2"	Sgr
WISEA J092733.57+633157.9	Unidentified	1 hour and 23 minutes	1 day ago	ACIS-S	NRAO	None	n/a	09^h 27^m 33.6^s	+63° 31' 57.8"	UMa
M87	Brightest galaxy in a Cluster (BCG)	2 hours and 8 minutes	1 day ago	HRC-I	n/a	None	n/a	12^h 30^m 49.4^s	+12° 23' 28.0"	Vir
1eRASS J144413.3-091846	Unidentified	38 minutes and 20 seconds	1 day ago	ACIS-S	n/a	None	n/a	14^h 44^m 13.3^s	-09° 18' 46.8"	Lib
Abell 3112 W	Unidentified	4 hours and 10 minutes	23 hours ago	ACIS-I	n/a	None	n/a	03^h 16^m 21.1^s	-44° 09' 41.7"	Eri
CAL-ER (42525)		50 minutes	18 hours ago	n/a	n/a	n/a	n/a	12^h 48^m 00.0^s	-09° 00' 00.0"	n/a
CAL-ER (42524)		50 minutes	14 hours ago	n/a	n/a	n/a	n/a	00^h 48^m 00.0^s	-43° 00' 00.0"	n/a
CAL-ER (42523)		50 minutes	11 hours ago	n/a	n/a	n/a	n/a	03^h 04^m 00.0^s	-30° 00' 00.0"	n/a
CAL-ER (42522)		33 minutes and 20 seconds	9 hours ago	n/a	n/a	n/a	n/a	12^h 40^m 24.0^s	-08° 00' 00.0"	n/a
PSR J1101-6101	Gamma-ray Source	11 hours and 45 minutes	now	ACIS-I	n/a	None	Time Critical	11^h 01^m 45.1^s	-61° 01' 40.3"	Car
HE1211-0513	Seyfert 1 Galaxy	2 hours and 46 minutes	in 4 hours	ACIS-S	n/a	None	n/a	12^h 13^m 54.6^s	-05° 30' 19.6"	Vir
Jupiter	Unidentified	4 hours and 1 minute	in 7 hours	HRC-S	HST	None	Time Critical	04^h 59^m 31.4^s	+22° 23' 50.8"	Tau
PSR J1101-6101	Gamma-ray Source	2 hours and 58 minutes	in 12 hours	ACIS-I	n/a	None	Time Critical	11^h 01^m 45.1^s	-61° 01' 40.3"	Car
GRB250314A	Unidentified	2 hours and 46 minutes	in 15 hours	ACIS-S	n/a	Intermediate	Time Critical, Monitoring	13^h 25^m 12.2^s	-05° 16' 55.1"	Vir
GAMA5275222	Galaxy	1 hour and 40 minutes	in 19 hours	ACIS-S	JWST	None	n/a	23^h 01^m 25.2^s	-34° 12' 40.9"	PsA
NGC1546	Emission-line galaxy	2 hours and 46 minutes	in 21 hours	ACIS-S	n/a	None	n/a	04^h 14^m 36.4^s	-56° 03' 39.2"	Dor
PG1149-110	Seyfert 1 Galaxy	2 hours and 46 minutes	in 1 day	ACIS-S	n/a	None	n/a	11^h 52^m 03.6^s	-11° 22' 24.1"	Crt
Jupiter	Unidentified	4 hours and 1 minute	in 1 day	HRC-S	HST	None	Time Critical	05^h 00^m 07.5^s	+22° 24' 54.5"	Tau
2RXS J120239.6-104243	Unidentified	2 hours and 46 minutes	in 1 day	ACIS-S	n/a	None	n/a	12^h 02^m 39.5^s	-10° 42' 49.2"	Vir
NGC1546	Emission-line galaxy	5 hours and 33 minutes	in 1 day	ACIS-S	n/a	None	n/a	04^h 14^m 36.4^s	-56° 03' 39.2"	Dor
4FGL J1809.2-2726	Gamma-ray Source	1 hour and 23 minutes	in 2 days	ACIS-I	n/a	None	Time Critical, Monitoring, Constrained	18^h 09^m 13.8^s	-27° 26' 44.2"	Sgr
SDSS J141705.98+493444.6	Unidentified	50 minutes	in 2 days	ACIS-S	n/a	None	n/a	14^h 17^m 06.0^s	+49° 34' 44.7"	Boo
CAL-ER (42521)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	12^h 56^m 00.0^s	-01° 18' 00.0"	n/a
CAL-ER (42520)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	12^h 53^m 36.0^s	-09° 41' 60.0"	n/a
CAL-ER (42519)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	00^h 48^m 00.0^s	-43° 00' 00.0"	n/a
CAL-ER (42518)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	21^h 44^m 00.0^s	+01° 00' 00.0"	n/a
4FGL J1809.2-2726	Gamma-ray Source	1 hour and 23 minutes	in 2 days	ACIS-I	n/a	None	Time Critical, Monitoring, Constrained	18^h 09^m 13.8^s	-27° 26' 44.2"	Sgr
SDSS J143108.88+271412.2	Blue Compact Galaxy	1 hour and 6 minutes	in 2 days	ACIS-S	n/a	None	n/a	14^h 31^m 08.9^s	+27° 14' 12.3"	Boo
GRB250314A	Unidentified	5 hours and 33 minutes	in 2 days	ACIS-S	n/a	Intermediate	Time Critical, Monitoring	13^h 25^m 12.2^s	-05° 16' 55.1"	Vir
B2.2 2147+28	Radio Source	4 hours and 26 minutes	in 3 days	ACIS-S	n/a	None	n/a	21^h 49^m 55.7^s	+29° 11' 14.4"	Peg
M87	Brightest galaxy in a Cluster (BCG)	3 hours and 25 minutes	in 3 days	HRC-I	n/a	None	n/a	12^h 30^m 49.4^s	+12° 23' 28.0"	Vir
GRB250314A	Unidentified	4 hours and 10 minutes	in 3 days	ACIS-S	n/a	Intermediate	Time Critical, Monitoring	13^h 25^m 12.2^s	-05° 16' 55.1"	Vir
SDSSJ214337.32-004724.1	Seyfert 1 Galaxy	5 hours and 33 minutes	in 3 days	ACIS-S	n/a	None	n/a	21^h 43^m 37.3^s	-00° 47' 24.1"	Aqr
GRB250314A	Unidentified	5 hours and 33 minutes	in 4 days	ACIS-S	n/a	Intermediate	Time Critical, Monitoring	13^h 25^m 12.2^s	-05° 16' 55.1"	Vir