The Russian German telescope Spektr-RG built a map of one third of the sky.

The Telescope registered over 95,000 X-ray sources.

On-board radio complex: X-band radio frequencies, operation throughout the mission of the orbital telescope at a distance of 200 km to 1.8 million km from Earth.
During the scan of the celestial sphere, each object will be observed for 30-40 seconds. Since Spectrum-RG performs 6 rotations per day, each object will be observed 6 times a day with an interval of 4 hours.


Astronomers used the Spektr-RG orbital observatory to construct an X-ray map of one third of the sky. In particular, the satellite received images of the brightest object in the constellation Cassiopeia.

In total, Spektr-RG has registered more than 95 thousand X-ray sources. This is six times more than the German satellite ROSAT recorded in the same area of the sky map in 1990.

The telescope recorded the highest density of X-ray sources in the area of the Pisces constellation.

An image with a cluster of Abell 426 galaxies in the constellation of Perseus and a bright remnant of a supernova (Cas A) flash in the constellation of Cassiopeia.
An image with a cluster of Abell 426 galaxies in the constellation of Perseus and a bright remnant of a supernova (Cas A) flash in the constellation of Cassiopeia.


The observatory continues to survey the starry sky.

The Russian part of the data is being processed by the specialists of the Space Research Institute (SRI) of the Russian Academy of Sciences, the German part is being processed by the scientists of the German Max Planck Institute of extraterrestrial physics.

Spektr-RG" observatory

Spektr-RG was launched on July 13, 2019 from Baikonur Cosmodrome. It is a joint Russian-German project aimed at scanning the sky in a wide energy range with high sensitivity and angular resolution. There are two X-ray telescopes on board: the Russian ART-XC and the German eROSITA

Astronomers expect the Spektr-RG to provide unique images of previously unknown space objects, which will help to understand the nature of dark matter and the Universe. 

This is the second spacecraft from the Spektr-R series, which is to take the place of Spektr-R, whose mission was completed at the end of May.

The first scientific data was transmitted to Earth by the observatory on July 24, 2019, the full scanning of the sky began in December of the same year.