A little more than a month has passed since the beginning of the regular all-sky survey of the SRG observatory, moving on a halo orbit around the Sun-Earth Lagrange point L2. The spacecraft is at a distance of one and a half million kilometers from Earth, rotating around an axis directed towards the Sun. Since the start of the scan, the ART-XC and eROSITA telescopes have already covered more than 1/6 of the entire celestial sphere and demonstrated the excellent capabilities of SRG in mapping the X-ray sky. By mid-June 2020, the scientists will have the first map of the entire sky, and after four years, each part of the sky will be covered 8 times, increasing the sensitivity of the survey by a record 20-30 times compared to the existing one by the ROSAT satellite.
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