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  2. Lidar - Wikipedia

    en.wikipedia.org/wiki/Lidar

    By precisely timing the lidar echo, and by measuring how much laser light is received by the telescope, scientists can accurately determine the location, distribution and nature of the particles. The result is a revolutionary new tool for studying constituents in the atmosphere, from cloud droplets to industrial pollutants, which are difficult ...

  3. Apparent magnitude - Wikipedia

    en.wikipedia.org/wiki/Apparent_magnitude

    Faintest objects observable with the Pan-STARRS 1.8-meter telescope using a 60-second exposure [73] This is currently the limiting magnitude of automated allsky astronomical surveys. +25.0: moon Fenrir: seen from Earth (small ≈4 km satellite of Saturn) [74] +25.3: Trans-Neptunian object 2018 AG 37: seen from Earth

  4. Aristarchos 2.3 m Telescope - Wikipedia

    en.wikipedia.org/wiki/Aristarchos_2.3_m_Telescope

    The Aristarchos 2.3 m Telescope is a Ritchey-Chrétien telescope at the Chelmos Observatory on Mount Chelmos, Greece. It is the largest telescope in the country and it had its first light test in 2005. It is operated by the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing of the National Observatory of Athens.

  5. Betelgeuse - Wikipedia

    en.wikipedia.org/wiki/Betelgeuse

    Radio-telescope images taken in 1998 confirm that Betelgeuse has a highly complex atmosphere, [158] with a temperature of 3,450 ± 850 K, similar to that recorded on the star's surface but much lower than surrounding gas in the same region. [158] [159] The VLA images also show this lower-temperature gas progressively cools as it extends outward ...

  6. Kepler-186f - Wikipedia

    en.wikipedia.org/wiki/Kepler-186f

    Kepler-186f [2] [3] (also known by its Kepler object of interest designation KOI-571.05) is an Earth-sized exoplanet orbiting within the habitable zone of the red dwarf star Kepler-186, [4] [5] [6] the outermost of five such planets discovered around the star by NASA's Kepler space telescope.

  7. Alpha Centauri - Wikipedia

    en.wikipedia.org/wiki/Alpha_Centauri

    GO Cycle 1 observations are planned for the James Webb Space Telescope (JWST) to search for planets around Alpha Centauri A, as well as observations of Epsilon Muscae. [111] The coronographic observations, which occurred on July 26 and 27, 2023, were failures, though there are follow-up observations in March 2024. [ 112 ]

  8. Gravitational microlensing - Wikipedia

    en.wikipedia.org/wiki/Gravitational_microlensing

    In strong and weak lensing, the mass of the lens is large enough (mass of a galaxy or galaxy cluster) that the displacement of light by the lens can be resolved with a high resolution telescope such as the Hubble Space Telescope. With microlensing, the lens mass is too low (mass of a planet or a star) for the displacement of light to be ...

  9. List of radio telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_radio_telescopes

    Four of the sixty-four total antennas of the ALMA radio telescope, at the Atacama Large Millimeter Array (ALMA) West arm of the low-frequency Ukrainian T-shaped Radio telescope, second modification (UTR-2) radio telescope phased array antenna. This is a list of radio telescopes – over one hundred – that are or have been used for radio ...