The target - NGC 5548 - is being observed by ACIS-S and the High Energy Transmission Grating (HETG) for 15 hours and 33 minutes. The observation started 11 hours ago and ends in 4 hours, and is part of the proposal Capturing the disk wind in NGC 5548 with Chandra. The target is located in the constellation Boötes and is a Seyfert 1 Galaxy. More information on the target can be found at SIMBAD. See related observation: 21846.
This is a time-critical observation.