The target - MAXI J1535-571 - is being observed by ACIS-S and the High Energy Transmission Grating (HETG) for 8 hours and 20 minutes. The observation started 3 hours ago and ends in 5 hours, and is part of the proposal An Integrated Approach to Winds, Jets, and State Transitions. The target is located in the constellation Norma and is a X-ray source. More information on the target can be found at SIMBAD. See related observations: 20203, 20204, 20205.

This is a joint observation with National Optical Astronomy Observatory (NOAO) (for 13 minutes and 20 seconds), National Radio Astronomy Observatory (NRAO) (for 2 hours and 13 minutes), and Nuclear Spectroscopic Telescope Array (NuSTAR) (for 1 day and 3 hours). However, it does not necessarily mean that the observations will be done at the same time! This is a time-critical and monitoring observation.

This is a TOO (target of opportunity) observation.

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