The Great Comet of 1861 was first observed by John Tebbutt, an amateur astronomer in Windsor, New South Wales. Tebbutt's passion for astronomy led him to make this remarkable discovery on May 13, 1861. The comet was initially noted due to its brightness and visibility to the naked eye, which captured the attention of fellow astronomers and the public alike. Tebbutt's observation was part of an important tradition of celestial observation, and he documented his findings meticulously, contributing to the contemporary understanding of comets and their orbits.

As the comet approached perihelion, it became an exciting focal point for astronomers and stargazers across the world. Its distinct tail and expansive visibility provided a unique opportunity for observational studies. The Great Comet of 1861 became one of the most observed comets of the 19th century, prompting a surge in interest in astronomy. Newspapers and journals reported on its movement, leading to increased public engagement with the scientific community and an interest in celestial bodies.

John Tebbutt’s discovery further emphasized the potential of amateur astronomers in contributing to the scientific community. His observations and subsequent reports inspired others to take an interest in astronomy, leading to the establishment of various societies and the facilitation of more structured celestial studies. The Great Comet served as both an astronomical wonder and a catalyst for public engagement in science during this time.