Lilienthaler Fernrohrbau Wie funktioniert ein Spiegelteleskop? → Wer hat's erfunden? → Das Newton-Teleskop → Das Cassegr
![The Royal Society on Twitter: "Reflecting telescope, designed and made by Isaac Newton. He built his first reflecting telescope in 1668; this is his second model. The telescope consists of two tubes, The Royal Society on Twitter: "Reflecting telescope, designed and made by Isaac Newton. He built his first reflecting telescope in 1668; this is his second model. The telescope consists of two tubes,](https://pbs.twimg.com/media/EGWUya_X0AA0QCy.jpg)
The Royal Society on Twitter: "Reflecting telescope, designed and made by Isaac Newton. He built his first reflecting telescope in 1668; this is his second model. The telescope consists of two tubes,
![Isaac Newton – Ein Mann mit Kopf und Herz - Gemeindenetzwerk - Ein Arbeitsbereich des Gemeindehilfsbundes Isaac Newton – Ein Mann mit Kopf und Herz - Gemeindenetzwerk - Ein Arbeitsbereich des Gemeindehilfsbundes](http://www.gemeindenetzwerk.de/wp-content/uploads/2016/07/spiegelteleskops.jpg)
Isaac Newton – Ein Mann mit Kopf und Herz - Gemeindenetzwerk - Ein Arbeitsbereich des Gemeindehilfsbundes
![Engraving depicting a Newtonian telescope a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727). Dated 19th Century Stock Photo - Alamy Engraving depicting a Newtonian telescope a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727). Dated 19th Century Stock Photo - Alamy](https://c8.alamy.com/comp/KJ1MBG/engraving-depicting-a-newtonian-telescope-a-type-of-reflecting-telescope-KJ1MBG.jpg)