John Tebbutt was an Australian astronomer, famous for discovering the "Great Comet of 1861".
John Tebbutt at his observatory in 1915
The Great Comet of 1861
The great comet of 1881, chromolithograph by Trouvelot
An Australian $100 note, depicting John Tebbutt
The Great Comet of 1861, formally designated C/1861 J1 and 1861 II, is a long-period comet that was visible to the naked eye for approximately 3 months. It was categorized as a great comet—one of the eight greatest comets of the 19th century.
C/1861 J1