Excelsior Correspondent
LADAKH, Oct 9: Asia’s largest imaging Cherenkov telescope, located at an altitude of almost 4,300 metres, was inaugurated today at Ladakh’s Hanle.
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The Major Atmospheric Cherenkov Experiment (MACE) observatory, the highest of its kind of telescope in the world, has been indigenously built by the Mumbai-based Bhabha Atomic Research Centre (BARC) with support from the Electronics Corporation of India Ltd (ECIL) and other Indian industry partners.
The MACE observatory is touted to place India at the forefront of cosmic ray research globally by allowing scientists to study high-energy gamma rays. This will pave the way for deeper understanding of the universe’s most energetic events, such as supernovae, black holes, and gamma-ray bursts.
Even before its formal inauguration, the telescope produced high-quality work detecting gamma ray flares as far away as 200 million light years away.
MACE is 21 metres in diameter, 175 tonnes heavy, has reflector area of 356 sqm and 1,424 diamond-turned metallic mirror facets, 712 actuators, 1,088 photo-multiplier tubes, and 68 camera modules.
It is a lightweight construction and features high strength and temperature endurance. Reflector surface measuring over 350 square metres (sqm) comprises highly reflective diamond-turned custom-built metallic mirror facets that are required to be aligned with an accuracy of 2 mm over parabolic surface. The camera at the focal point contains a number of photomultiplier tubes mounted with specialised assembly to enhance light collection efficiency.
The site has been carefully chosen for its unique scientific advantages as Hanle offers extremely low light pollution required for gamma ray observations. The longitudinal advantage of its location enables MACE to observe sources invisible to other parts of the world.
“Hanle is like heaven for gamma ray astronomers with its dark skies, low humidity and almost no air pollution,” said Dr AK Mohanty, chairman, Atomic Energy Commission and India’s nuclear chief. He said another few more gamma ray telescopes could be built here, making Hanle the go-to place for global astronomers, some with international collaboration.
The telescope will allow scientists to study high-energy gamma rays, paving the way for deeper understanding of the universe’s most energetic events.
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