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  2. Chandra X-ray Observatory - Wikipedia

    en.wikipedia.org/wiki/Chandra_X-ray_Observatory

    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).

  3. PKS 0637-752 - Wikipedia

    en.wikipedia.org/wiki/PKS_0637-752

    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.

  4. Indian Astronomical Observatory - Wikipedia

    en.wikipedia.org/wiki/Indian_Astronomical...

    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 ]

  5. File:Chandra2.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Chandra2.pdf

    Original file (739 × 612 pixels, file size: 15 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  6. Category:Chandra X-ray Observatory - Wikipedia

    en.wikipedia.org/wiki/Category:Chandra_X-ray...

    The Chandra X-ray Observatory is the third of NASA's four Great Observatories. Chandra X-ray Observatory The main article for this category is Chandra X-ray Observatory .

  7. Great Observatories Origins Deep Survey - Wikipedia

    en.wikipedia.org/wiki/Great_Observatories...

    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.

  8. List of highest astronomical observatories - Wikipedia

    en.wikipedia.org/wiki/List_of_highest...

    These include the Chacaltaya Astrophysical Observatory in Bolivia, which at 5,230 m (17,160 ft) was the world's highest permanent astronomical observatory [9] from the time of its construction during the 1940s until surpassed in 2009 by the new University of Tokyo Atacama Observatory, [10] an optical-infrared telescope on a remote 5,640 m ...

  9. NGC 3115 - Wikipedia

    en.wikipedia.org/wiki/NGC_3115

    NGC 3115 (also called the Spindle Galaxy or Caldwell 53) is a field lenticular (S0) galaxy in the constellation Sextans.The galaxy was discovered by William Herschel on February 22, 1787.