1. 
   Herschel,
   (Frederick William 1738-1822) A German-born English astronomer, brother of Caroline Herschel and father of John Herschel, who discovered Uranus (1781), its two largest moons, Oberon and Titania (1787), and two moons of Saturn, Mimas and Enceladus (1789). He also effectively...
   Found op http://www.daviddarling.info/encyclopedia/H/HerschelW.html
   
   
2. 
   Herschel,
   (Frederick) German-born English astronomer. He was a skilled telescopemaker, and pioneered the study of binary stars and nebulae. He discovered the planet Uranus in 1781 and infrared solar rays in 1801. He catalogued over 800 doub...
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0001741.html
   
   

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