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  2. QSO J0529-4351 - Wikipedia

    en.wikipedia.org/wiki/QSO_J0529-4351

    The object itself was detected in ESO images dating back to 1980, but its identification as a quasar occurred only several decades later. [2]An automated analysis of 2022 data from the European Space Agency's Gaia satellite did not confirm J0529-4351 as too bright to be a quasar, and suggested it was a 16th magnitude star with a 99.98% probability.

  3. Satellite Data System - Wikipedia

    en.wikipedia.org/wiki/Satellite_Data_System

    The current SDS-3 constellation, consisting of three Molniya orbit type and two geostationary satellites. The Satellite Data System (SDS) is a system of United States military communications satellites.

  4. CTA-102 - Wikipedia

    en.wikipedia.org/wiki/CTA-102

    The idea that the emission was caused by a civilization was rejected when the radio source was later identified as one of the many varieties of a quasar. [ 3 ] The American folk rock band The Byrds whimsically reflected the original view that CTA-102 was a sign of extraterrestrial intelligence in their song "C.T.A.-102" from their 1967 album ...

  5. 3C 273 - Wikipedia

    en.wikipedia.org/wiki/3C_273

    3C 273 is a quasar located at the center of a giant elliptical galaxy in the constellation of Virgo. It was the first quasar ever to be identified and is the visually brightest quasar in the sky as seen from Earth, with an apparent visual magnitude of 12.9. [2] The derived distance to this object is 749 megaparsecs (2.4 billion light-years).

  6. Gamma correction - Wikipedia

    en.wikipedia.org/wiki/Gamma_correction

    Using the controls for gamma, contrast and brightness, the gamma correction on an LCD can only be done for one specific vertical viewing angle, which implies one specific horizontal line on the monitor, at one specific brightness and contrast level. An ICC profile allows one to adjust the monitor for several brightness levels. The quality (and ...

  7. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    Diameter of the low surface brightness disc halo of the giant spiral galaxy Malin 1: 10 22: 10 Zm: 13.25 Zm Radius of the diffuse stellar halo of IC 1101, one of the largest-known galaxies 24 Zm Distance to Andromeda Galaxy: 30.857 Zm 1 megaparsec: 50 Zm Diameter of Local Group of galaxies: 10 23: 100 Zm: 300–600 Zm Distance to Virgo cluster ...

  8. RX J1131-1231 - Wikipedia

    en.wikipedia.org/wiki/RX_J1131-1231

    RX J1131-1231 is a distant, supermassive-black-hole-containing quasar located about 6 billion light years from Earth in the constellation Crater. [1] [2]In 2014, astronomers found that the X-rays being emitted are coming from a region inside the accretion disk located about three times the radius of the event horizon.

  9. Candela per square metre - Wikipedia

    en.wikipedia.org/wiki/Candela_per_square_metre

    As a measure of light emitted per unit area, this unit is frequently used to specify the brightness of a display device. The sRGB spec for monitors targets 80 cd/m 2 . [ 3 ] Typically, monitors calibrated for SDR broadcast or studio color grading should have a brightness of 100 cd/m 2 . [ 4 ]