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Chandra is an Earth satellite in a 64-hour orbit, and its mission is ongoing as of 2025. Chandra is one of the Great Observatories, along with the Hubble Space Telescope, Compton Gamma Ray Observatory (1991–2000), and the Spitzer Space Telescope (2003–2020).
According to observations made by Australia Telescope Compact Array, these knots are shown to be quasi-periodic with a separation gap of ~1.1 arcsecs. Using two class models, astronomers calculated the jet power of PKS 0637-752 to be Q ~ 10 46 erg/s and the jet engine modulation to be 2 x 10 3 yr < \tau < 3x 10 5 yr.
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The Himalayan Chandra Telescope is a 2.01-metre (79 in) optical-infrared telescope named after India-born Nobel laureate Subrahmanyam Chandrasekhar. [3] It contains a modified Ritchey-Chretien system with a primary mirror made of ULE ceramic which is designed to withstand low temperatures it experiences. [ 12 ]
The Great Observatories Origins Deep Survey, or GOODS, is an astronomical survey combining deep observations from three of NASA's Great Observatories: the Hubble Space Telescope, the Spitzer Space Telescope, and the Chandra X-ray Observatory, along with data from other space-based telescopes, such as XMM Newton, and some of the world's most powerful ground-based telescopes.
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An X-ray telescope (XRT) is a telescope that is designed to observe remote objects in the X-ray spectrum. X-rays are absorbed by the Earth's atmosphere , so instruments to detect X-rays must be taken to high altitude by balloons , sounding rockets , and satellites .