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Candid cosmos: eROSITA cameras set benchmark for astronomical imaging


SPIE International Society for Optics and Photonics
Recently, the eROSITA (extended Roentgen Survey with an Imaging Telescope Array) x-ray telescope, an instrument developed by a team of scientists at Max-Planck-Institut für Extraterrestrische Physik (MPE), has gained attention among astronomers. The instrument performs an all-sky survey in the x-ray energy band of 0.2-8 kilo electron volts aboard the Spectrum-Roentgen-Gamma (SRG) satellite that was launched in 2019 from the Baikonur cosmodrome in Kazakhstan.
“The eROSITA has been designed to study the large-scale structure of the universe and test cosmological models, including dark energy, by detecting galaxy clusters with redshifts greater than 1, corresponding to a cosmological expansion faster than the speed of light,” said Dr. Norbert Meidinger from MPE, a part of the team that developed the instrument. “We expect eROSITA to revolutionize our understanding of the evolution of supermassive black holes.” The d ....

United States , Norbert Meidinger , Megan Eckart , Lawrence Livermore National Laboratory , Roentgen Survey , Imaging Telescope Array , Extraterrestrische Physik , Astronomical Telescopes , Lawrence Livermore National Laboratory , Black Hole , ஒன்றுபட்டது மாநிலங்களில் , மேகன் எக்கர்த் , லாரன்ஸ் லிவர்மோர் தேசிய ஆய்வகம் , அரொவெஂச்ஜந் கணக்கெடுப்பு , இமேஜிங் தொலைநோக்கி வரிசை , வானியல் தொலைநோக்கிகள் ,

Bad Astronomy | Supernova debris Hoinga found in X-rays


The technical name of this supernova remnant is SNR G249.5+24.5, but the astronomers who discovered it dubbed it Hoinga, after the medieval name of the first author s hometown, Bad Hönningen am Rhein.
Zoom In
The Hoinga supernova remnant (upper right) seen in X-rays (converted to colors representing the energies of the X-rays) by eROSITA. The bright blob at the bottom is actually two supernova remnants: Vela and Puppis A. Credit: SRG/eROSITA
They found it in observations taken by a mission called eROSITA (extended Röntgen Survey Imaging Telescope Array;
Röntgen is the German word for X-rays, after their discoverer). This is a space-based X-ray observatory on board a German-Russian spacecraft called Spectrum-Roentgen-Gamma, which orbits the Sun about 1.5 million kilometers from the Earth in a spot called the L2 point, a volume of space where a spacecraft can remain semi-stable without too much effort. ....

Imaging Telescope Array , Survey Imaging Telescope Array , Australian Continuum , Crab Nebula , Milky Way , இமேஜிங் தொலைநோக்கி வரிசை , நண்டு நெபுலா , பால் வழி ,