“Celestial mechanisms” drove John Tebbutt’s passion. Today we stand before Peninsula House and Tebbutt’s Observatory. It is a heritage-listed residence and former observatory in Windsor. The observatory’s story began in 1845 with John Tebbutt.
John Tebbutt was born in Windsor in 1824. He developed an early interest in astronomy. His passion grew with experience and instruments.
In 1842, John’s father acquired land and built Peninsula House. A two-story wing was added later. Tebbutt’s early stargazing occurred here. He used a marine sextant he bought in 1853.
Tebbutt achieved international fame in 1861. He discovered the Great Comet. In 1862 he declined the Government Astronomer position. He didn’t want to leave Windsor.
In 1864, John Tebbutt built a small wooden observatory. A second circular structure followed in 1874. By 1879, he erected a larger circular observatory.
Tebbutt was a fellow of the Royal Astronomical Society. He made reliable observations. He regularly published his findings. His work earned him international recognition.
From his observatories, Tebbutt watched lunar occultations. He studied Jupiter’s satellites and comets. He tracked minor planets and double stars. He observed transits of Mercury and Venus.
In 1872, he acquired an 11.4 cm refracting telescope. With it he observed the transit of Venus in 1874. In 1886, he imported a 200 mm Grubb refracting telescope. He housed it in a brick observatory. The telescope later went to New Zealand. It returned to Australia for the Bicentenary. Today, Hawkesbury City Council owns the telescope.
Tebbutt spent his entire life in Windsor. He devoted himself to astronomy. He corresponded with colleagues worldwide. He published widely. His “Astronomical Memoirs” listed 371 publications.
His image and the observatory were on the $100 note from 1984 to 1996.
Peninsula House is a two-story Georgian-style house. It is made of sandstock brick. The main roof and verandah are slate. Delicate cast iron columns support the verandah. Six-panel doors and windows adorn the house. Sandstone is used for the foundations.
Two brick observatories stand in the old garden. The smaller one is circular. The larger one features sandstone quoins. It has a classical pediment over a porch.
Peninsula House and Tebbutt’s Observatory are important buildings. They represent early and late Victorian architecture. Together with the rural landscape, they contribute to Windsor’s charm. The site is located close to Windsor on high ground. It becomes a secluded island when the Hawkesbury River floods.
The New South Wales State Heritage Register listed the Peninsula House and Tebbutt’s Observatory on 2 April 1999.
John Tebbutt died in 1916. He designed his own vault in the Anglican cemetery. His descendants owned and occupied the house until 2017.
This site is a testament to John Tebbutt’s dedication. His passion made significant contributions to astronomy. This place connects us to the stars. It also connects us to a man who watched them so intently.