The newly identified cluster

Screenshot of the message appearing on the Kueyen (UT2 of ESO's Very Large Telescope) console when the Rapid Response Mode is triggered by a distant explosion. The current observation is terminated and the telescope is preset to the site of the explosion to take spectra. Astronomers at the console can if requested stop the procedure. Otherwise, they just need to align the slit of the spectrograph before the observations can start. The whole procedure lasts a few minutes only.