The Chandra schedule

3-day Schedule

The map of the observations requires JavaScript, but it appears that it is not available (or the page is taking some time to load).

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
SNR G1.9+0.3	SuperNova Remnant	2 hours and 45 minutes	4 days ago	ACIS-S	n/a	None	n/a	17^h 48^m 45.0^s	-27° 10' 00.1"	Sgr
CAL-ER (41275)		15 minutes and 40 seconds	3 days ago	n/a	n/a	n/a	n/a	20^h 56^m 45.2^s	-15° 17' 26.1"	n/a
Perseus cluster S	Unidentified	6 hours and 31 minutes	3 days ago	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 25' 24.8"	Per
Perseus cluster S	Unidentified	2 hours and 42 minutes	3 days ago	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 25' 24.8"	Per
ClG J0242-2132	Cluster of Galaxies	8 hours and 20 minutes	2 days ago	ACIS-S	n/a	None	n/a	02^h 42^m 35.9^s	-21° 32' 26.2"	Cet
GL 783	Double or Multiple Star	3 hours and 10 minutes	2 days ago	ACIS-S	n/a	None	Time Critical, Monitoring	20^h 11^m 12.1^s	-36° 06' 06.3"	Sgr
NGC3137	Seyfert 2 Galaxy	3 hours and 26 minutes	2 days ago	ACIS-S	n/a	None	n/a	10^h 09^m 07.4^s	-29° 03' 51.1"	Ant
GL 783	Double or Multiple Star	5 hours and 38 minutes	2 days ago	ACIS-S	n/a	None	Time Critical, Monitoring	20^h 11^m 12.1^s	-36° 06' 06.3"	Sgr
Gaia DR3 5414242958825679488	White Dwarf Candidate	5 hours and 13 minutes	1 day ago	ACIS-S	n/a	None	n/a	10^h 13^m 42.5^s	-45° 16' 56.7"	Vel
GL 783	Double or Multiple Star	3 hours and 59 minutes	1 day ago	ACIS-S	n/a	None	Time Critical, Monitoring	20^h 11^m 12.1^s	-36° 06' 06.3"	Sgr
Perseus cluster S	Unidentified	3 hours and 53 minutes	22 hours ago	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 25' 24.8"	Per
CAL-ER (41272)		50 minutes	18 hours ago	n/a	n/a	n/a	n/a	21^h 31^m 27.1^s	-12° 08' 31.2"	n/a
CAL-ER (41268)		50 minutes	9 hours ago	n/a	n/a	n/a	n/a	20^h 06^m 42.2^s	-05° 02' 03.5"	n/a
CAL-ER (41267)		33 minutes and 20 seconds	8 hours ago	n/a	n/a	n/a	n/a	14^h 48^m 00.0^s	+24° 36' 00.0"	n/a
CAL-ER (41266)		33 minutes and 20 seconds	7 hours ago	n/a	n/a	n/a	n/a	13^h 49^m 08.2^s	-30° 13' 54.5"	n/a
PSO J308.0416-21.2339	Quasar	4 hours and 10 minutes	6 hours ago	ACIS-S	n/a	None	n/a	20^h 32^m 10.0^s	-21° 14' 02.4"	Cap
CAL-ER (41265)			1 hour ago	n/a	n/a	n/a	n/a	17^h 02^m 42.2^s	-03° 05' 11.8"	n/a
CAL-ER (41264)		15 minutes	39 minutes ago	n/a	n/a	n/a	n/a	14^h 36^m 48.0^s	+28° 04' 03.4"	n/a
SDSS J143345.14+264915.1	Emission-line galaxy	5 hours and 33 minutes	now	ACIS-S	n/a	None	n/a	14^h 33^m 45.1^s	+26° 49' 15.2"	Boo
CAL-ER (41263)			in 5 hours	n/a	n/a	n/a	n/a	17^h 02^m 42.2^s	-03° 05' 11.8"	n/a
PSO J308.0416-21.2339	Quasar	4 hours and 10 minutes	in 6 hours	ACIS-S	n/a	None	n/a	20^h 32^m 10.0^s	-21° 14' 02.4"	Cap
CAL-ER (41262)			in 10 hours	n/a	n/a	n/a	n/a	17^h 02^m 42.2^s	-03° 05' 11.8"	n/a
CAL-ER (41261)		15 minutes	in 11 hours	n/a	n/a	n/a	n/a	14^h 36^m 48.0^s	+28° 04' 03.4"	n/a
SDSS J143345.14+264915.1	Emission-line galaxy	5 hours and 33 minutes	in 11 hours	ACIS-S	n/a	None	n/a	14^h 33^m 45.1^s	+26° 49' 15.2"	Boo
CAL-ER (41260)			in 17 hours	n/a	n/a	n/a	n/a	16^h 17^m 31.2^s	-12° 13' 06.6"	n/a
GL 783	Double or Multiple Star	6 hours and 23 minutes	in 18 hours	ACIS-S	n/a	None	Time Critical, Monitoring	20^h 11^m 12.1^s	-36° 06' 06.3"	Sgr
CAL-ER (41259)			in 1 day	n/a	n/a	n/a	n/a	17^h 02^m 42.2^s	-03° 05' 11.8"	n/a
CAL-ER (41258)		15 minutes	in 1 day	n/a	n/a	n/a	n/a	14^h 36^m 48.0^s	+28° 04' 03.4"	n/a
SDSS J143345.14+264915.1	Emission-line galaxy	4 hours and 26 minutes	in 1 day	ACIS-S	n/a	None	n/a	14^h 33^m 45.1^s	+26° 49' 15.2"	Boo
CAL-ER (41257)			in 1 day	n/a	n/a	n/a	n/a	17^h 02^m 42.2^s	-03° 05' 11.8"	n/a
GL 783	Double or Multiple Star	6 hours and 40 minutes	in 1 day	ACIS-S	n/a	None	Time Critical, Monitoring	20^h 11^m 12.1^s	-36° 06' 06.3"	Sgr
CAL-ER (41256)		15 minutes	in 2 days	n/a	n/a	n/a	n/a	09^h 34^m 05.1^s	-33° 06' 54.4"	n/a
CLJ030310.0-211933	Unidentified	4 hours and 53 minutes	in 2 days	ACIS-I	n/a	None	n/a	03^h 03^m 10.0^s	-21° 19' 33.0"	Eri
CAL-ER (41255)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	21^h 34^m 31.5^s	-17° 09' 58.3"	n/a
CAL-ER (41254)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	01^h 29^m 00.1^s	-17° 41' 40.2"	n/a
CAL-ER (41253)		50 minutes	in 2 days	n/a	n/a	n/a	n/a	05^h 29^m 43.8^s	-37° 47' 56.4"	n/a
CAL-ER (41252)		33 minutes and 20 seconds	in 2 days	n/a	n/a	n/a	n/a	05^h 09^m 36.0^s	+19° 41' 60.0"	n/a
CAL-ER (41251)		33 minutes and 20 seconds	in 2 days	n/a	n/a	n/a	n/a	22^h 17^m 48.2^s	-11° 53' 54.6"	n/a
Perseus cluster S	Unidentified	5 hours and 16 minutes	in 2 days	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 25' 24.8"	Per
CAL-ER (41250)			in 3 days	n/a	n/a	n/a	n/a	01^h 34^m 24.0^s	-20° 41' 60.0"	n/a
GL 783	Double or Multiple Star	3 hours and 13 minutes	in 3 days	ACIS-S	n/a	None	Time Critical, Monitoring	20^h 11^m 12.1^s	-36° 06' 06.3"	Sgr
CAL-ER (41249)		15 minutes	in 3 days	n/a	n/a	n/a	n/a	11^h 22^m 56.8^s	-36° 33' 00.4"	n/a
Perseus cluster S	Unidentified	5 hours and 33 minutes	in 3 days	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 25' 24.8"	Per
CAL-ER (41248)			in 3 days	n/a	n/a	n/a	n/a	01^h 34^m 24.0^s	-20° 41' 60.0"	n/a
GL 783	Double or Multiple Star	3 hours and 13 minutes	in 3 days	ACIS-S	n/a	None	Time Critical, Monitoring	20^h 11^m 12.1^s	-36° 06' 06.3"	Sgr
CAL-ER (41247)		15 minutes	in 3 days	n/a	n/a	n/a	n/a	11^h 22^m 56.8^s	-36° 33' 00.4"	n/a
Perseus cluster S	Unidentified	5 hours and 16 minutes	in 3 days	ACIS-I	n/a	None	Time Critical	03^h 19^m 48.2^s	+41° 25' 24.8"	Per