The potential advantages of using parabolic mirrors-reduction of spherical aberration and no chromatic aberration-led to many proposed designs and several attempts to build reflecting telescopes. The idea that the objective, or light-gathering element, could be a mirror instead of a lens was being investigated soon after the invention of the refracting telescope. Galileo heard about the Dutch telescope in June 1609, built his own within a month, and greatly improved upon the design in the following year. Their development is credited to three individuals: Hans Lippershey and Zacharias Janssen, who were spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The earliest recorded working telescopes were the refracting telescopes that appeared in the Netherlands in 1608. This is the sensor in the Kepler spacecraft Modern telescopes typically use CCD instead of film for recording images. In the Starry Messenger Galileo had used the term "perspicillum". The word " telescope" (from the Greek τῆλε, tele "far" and σκοπεῖν, skopein "to look or see" τηλεσκόπος, teleskopos "far-seeing") was coined in 1611 by the Greek mathematician Giovanni Demisiani for one of Galileo Galilei's instruments presented at a banquet at the Accademia dei Lincei. The word telescope now refers to a wide range of instruments detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors. In the 20th century many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s. Within a few decades, the reflecting telescope was invented, which used mirrors. They found use in terrestrial applications and astronomy. The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, using glass lenses. The MXT is currently ready to be integrated on the SVOM satellite platform this year, before its planned launch in 2023 on board the Long March 2C rocket.The 100 inch (2.5 m) Hooker reflecting telescope at Mount Wilson Observatory near Los Angeles, California.Ī telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). This camera is placed at the focal point of a revolutionary optic inspired by a lobster eye, able to form the image on the detector.
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