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 18 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
SDSS J141843.40+280957.4	Galaxy	4 hours and 40 minutes	3 days ago	ACIS-S	n/a	None	n/a	14^h 18^m 43.4^s	+28° 09' 57.5"	Boo
Snake	Unidentified	2 hours and 57 minutes	3 days ago	ACIS-I	NRAO	None	n/a	17^h 44^m 19.2^s	-29° 46' 53.0"	Sgr
CAL-ER (41357)		50 minutes	3 days ago	n/a	n/a	n/a	n/a	18^h 45^m 34.2^s	-25° 02' 47.4"	n/a
CAL-ER (41353)		50 minutes	3 days ago	n/a	n/a	n/a	n/a	09^h 04^m 33.4^s	+08° 57' 35.2"	n/a
Perseus cluster E	Unidentified	4 hours and 8 minutes	3 days ago	ACIS-I	n/a	None	Time Critical	03^h 20^m 14.4^s	+41° 30' 33.4"	Per
ZTF J1858-2024	Cataclysmic Binary	2 hours and 45 minutes	2 days ago	ACIS-S	n/a	None	n/a	18^h 58^m 05.9^s	-20° 24' 48.6"	Sgr
Perseus cluster E	Unidentified	4 hours and 8 minutes	2 days ago	ACIS-I	n/a	None	Time Critical	03^h 20^m 14.4^s	+41° 30' 33.4"	Per
ZTF J1858-2024	Cataclysmic Binary	2 hours and 45 minutes	2 days ago	ACIS-S	n/a	None	n/a	18^h 58^m 05.9^s	-20° 24' 48.6"	Sgr
Perseus cluster E	Unidentified	4 hours and 8 minutes	2 days ago	ACIS-I	n/a	None	Time Critical	03^h 20^m 14.4^s	+41° 30' 33.4"	Per
2MASX J20043345-1113515	Active Galaxy Nucleus Candidate	2 hours and 45 minutes	2 days ago	ACIS-S	n/a	None	n/a	20^h 04^m 33.5^s	-11° 13' 51.9"	Aql
Perseus cluster E	Unidentified	4 hours and 8 minutes	1 day ago	ACIS-I	n/a	None	Time Critical	03^h 20^m 14.4^s	+41° 30' 33.4"	Per
Abell 98N	Unidentified	15 hours and 16 minutes	1 day ago	ACIS-I	n/a	None	n/a	00^h 46^m 19.2^s	+20° 49' 43.3"	Psc
CAL-ER (41347)		15 minutes	14 hours ago	n/a	n/a	n/a	n/a	18^h 01^m 46.5^s	+16° 34' 57.7"	n/a
Snake	Unidentified	3 hours	13 hours ago	ACIS-I	NRAO	None	n/a	17^h 44^m 19.2^s	-29° 46' 53.0"	Sgr
CAL-ER (41346)		50 minutes	10 hours ago	n/a	n/a	n/a	n/a	18^h 40^m 06.3^s	-24° 27' 20.2"	n/a
CAL-ER (41345)		50 minutes	8 hours ago	n/a	n/a	n/a	n/a	20^h 06^m 09.2^s	-18° 23' 52.8"	n/a
CAL-ER (41344)		50 minutes	4 hours ago	n/a	n/a	n/a	n/a	02^h 38^m 48.0^s	+33° 53' 60.0"	n/a
CAL-ER (41343)		50 minutes	3 hours ago	n/a	n/a	n/a	n/a	11^h 17^m 16.5^s	+35° 09' 26.3"	n/a
CAL-ER (41342)		50 minutes	now	n/a	n/a	n/a	n/a	01^h 34^m 00.0^s	+32° 47' 60.0"	n/a
CAL-ER (41341)		33 minutes and 20 seconds	in 1 hour	n/a	n/a	n/a	n/a	19^h 52^m 24.0^s	-15° 05' 60.0"	n/a
Perseus cluster N	Unidentified	4 hours and 10 minutes	in 3 hours	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 35' 22.8"	Per
PKS2008-159	Blazar	2 hours and 46 minutes	in 8 hours	ACIS-S	n/a	None	n/a	20^h 11^m 15.7^s	-15° 46' 40.3"	Cap
Perseus cluster N	Unidentified	4 hours and 10 minutes	in 11 hours	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 35' 22.8"	Per
PSO J308.0416-21.2339	Quasar	3 hours and 20 minutes	in 16 hours	ACIS-S	n/a	None	n/a	20^h 32^m 10.0^s	-21° 14' 02.4"	Cap
Perseus cluster N	Unidentified	5 hours	in 20 hours	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 35' 22.8"	Per
PSO J308.0416-21.2339	Quasar	3 hours and 36 minutes	in 1 day	ACIS-S	n/a	None	n/a	20^h 32^m 10.0^s	-21° 14' 02.4"	Cap
Perseus cluster N	Unidentified	5 hours	in 1 day	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 35' 22.8"	Per
MACS J0018.5+1626	Cluster of Galaxies	2 hours and 46 minutes	in 1 day	ACIS-I	n/a	None	n/a	00^h 18^m 33.3^s	+16° 26' 35.9"	Psc
EP260302a	Unidentified	4 hours and 10 minutes	in 2 days	ACIS-S	n/a	Slow	Time Critical	08^h 51^m 53.7^s	-65° 59' 01.3"	Vol
V4641 Sgr N1	Unidentified	2 hours and 46 minutes	in 2 days	ACIS-I	n/a	None	n/a	18^h 19^m 33.8^s	-25° 09' 35.7"	Sgr
NGC4694	Active Galaxy Nucleus	6 hours and 40 minutes	in 2 days	ACIS-S	n/a	None	n/a	12^h 48^m 15.1^s	+10° 59' 00.6"	Vir
CAL-ER (41340)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	19^h 17^m 32.1^s	-19° 23' 58.9"	n/a
CAL-ER (41339)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	20^h 15^m 42.8^s	-19° 31' 05.2"	n/a
CAL-ER (41338)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	02^h 24^m 15.2^s	+18° 07' 00.5"	n/a
CAL-ER (41337)		15 minutes	in 3 days	n/a	n/a	n/a	n/a	20^h 07^m 60.0^s	-19° 53' 60.0"	n/a
CAL-ER (41336)		15 minutes	in 3 days	n/a	n/a	n/a	n/a	19^h 49^m 42.1^s	-24° 24' 14.8"	n/a
ASASSN-14ko	SuperNova	3 hours and 53 minutes	in 3 days	ACIS-S	n/a	None	Time Critical, Monitoring	05^h 25^m 18.1^s	-46° 00' 20.3"	Pic
AT2026fgk	Unidentified	2 hours and 13 minutes	in 3 days	ACIS-S	n/a	Intermediate	n/a	14^h 37^m 16.1^s	+71° 50' 30.3"	UMi
Kes 73	SuperNova Remnant	4 hours and 10 minutes	in 3 days	ACIS-S	JWST	None	n/a	18^h 41^m 20.0^s	-04° 56' 11.0"	Sct
NGC4298	Galaxy in Pair of Galaxies	5 hours	in 3 days	ACIS-S	n/a	None	n/a	12^h 21^m 32.8^s	+14° 36' 22.0"	Com
Kes 73	SuperNova Remnant	4 hours and 10 minutes	in 3 days	ACIS-S	JWST	None	n/a	18^h 41^m 20.0^s	-04° 56' 11.0"	Sct