James Dunlop

1843 oil portrait of James Dunlop by Joseph Backler
Jane Dunlop
The headstone of James Dunlop (1793–1848) at St. Paul's Anglican Church, Kincumber, New South Wales, Australia

Scottish astronomer, noted for his work in Australia.

- James Dunlop

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Thomas Brisbane

British Army officer, administrator, and astronomer.

Painting of Thomas Brisbane by F. Schenck (1850)
Remains of observatory in Parramatta Park, Parramatta, N.S.W.
The Brisbane family vault in Largs

He took telescopes, books and two astronomical assistants, Carl Ludwig Christian Rümker and James Dunlop to New South Wales with him.

Double star

Pair of stars that appear close to each other as viewed from Earth, especially with the aid of optical telescopes.

Astronomers have mistakenly reported observations of a double star in place of J 900 and a faint star in the constellation of Gemini.
Artist's impression of the discs around the young stars HK Tauri A and B.

Other examples include Δ65, the 65th double discovered by James Dunlop, and Σ2451, discovered by F. G. W. Struve.


Bright constellation in the southern sky.

Centaurus in the southwestern sky, shortly after sunset.
The two bright stars are (left) Alpha Centauri and (right) Beta Centauri. The faint red star in the center of the red circle is Proxima Centauri.
Centaurus in the Firmamentum Sobiescianum of Johannes Hevelius. This image is reversed from what one sees looking at the sky — it is as though one is looking at the "celestial sphere" from the outside.
Centaurus, 1602

Its status as a globular cluster was determined by James Dunlop in 1827.

Centaurus A

Galaxy in the constellation of Centaurus.

Schematic diagram of the components of the Centaurus A galaxy
This view of the jets of Centaurus A was created through observations in radio waves with a wavelength of 20 cm with the VLA. The position of the radio jet and the knots within the jets matches very well with the structures seen in the x-ray jet. This region of the jet is named „Inner Lobe“.
Wide field view of Centaurus A showing its extended halo of stars
The radio galaxy Centaurus A, as seen by ALMA
The heavily obscured inner (barred?) spiral disk at 24 μm as shown by the Spitzer IR telescope
Chandra X-ray view of Cen A in X-rays showing one relativistic jet from the central black hole
"Hubble's panchromatic vision... reveals the vibrant glow of young, blue star clusters..."<ref>{{cite web|title=Firestorm of Star Birth in Galaxy Centaurus A|url=http://www.nasa.gov/multimedia/imagegallery/image_feature_2192.html|publisher=NASA|access-date=27 September 2012}}</ref>
Image of the central parts of Centaurus A showing the parallelogram-shaped remains of a smaller galaxy that was absorbed about 200 to 700 million years ago
"False-colour image of Centaurus A, showing radio (red), 24-micrometre infrared (green) and 0.5–5 keV X-ray emission (blue)
Central part of the galaxy
Amateur astronomer photo of Centaurus A

It was discovered in 1826 by Scottish astronomer James Dunlop from his home in Parramatta, in New South Wales, Australia.


Suburb and major commercial centre in Greater Western Sydney, located in the state of New South Wales, Australia.

Parramatta viewed from the west
View of Parramatta in 1812
"Parramatta from May's Hill" - Joseph Lycett (c1824)
Parramatta in 1886
The former Female Orphan School was one of the first schools in the area
Church Street
6 & 8 Parramatta Square, Parramatta's tallest building
St John's Cathedral was completed in 1802
St Patrick's Cathedral
Congregational Church (1871)
Victorian Gazebo at the Prince Alfred Square
The Old Government House is a major site of significance in Parramatta Park
Parramatta railway station
Charles Street Ferry Wharf
Parramatta Town Hall
Macarthur Girls High School
Old King's School
Bankwest Stadium
Various events are held on the Parramatta River

Astronomers who worked at the observatory, discovering thousands of new stars and deep sky objects, include James Dunlop and Carl Rümker.

Carl Ludwig Christian Rümker

German astronomer.

Carl Ludwig Christian Rümker.
Tomb of Carl Ludwig Christian Rümker in the British Cemetery, Lisbon

James Dunlop was second assistant.

P Eridani

Binary star system in the constellation of Eridanus whose distance from the Sun is approximately 26 light-years based upon parallax.

Binary system of two stars

It was found to be a double star in December 1825 by James Dunlop in Australia at his home at Paramatta, now spelt Parramatta.

NGC 7793

Flocculent spiral galaxy in the southern constellation of Sculptor.

Hubble Space Telescope image of the small bulge and spiral arms of NGC 7793
Visual and infrared image of NGC 7793

It was discovered in 1826 by Scottish astronomer James Dunlop.

Robert T. A. Innes

Scottish astronomer best known for discovering Proxima Centauri in 1915, and numerous binary stars.

When he started observing them as an amateur in Australia, the choice plums had already been picked by earlier astronomers, notably James Dunlop and John Herschel.

NGC 4945

Barred spiral galaxy in the constellation Centaurus, visible near the star Xi Centauri.

NGC 4945 image take by the MPG/ESO 2.2-metre telescope at La Silla Observatory
The location of NGC 4945 (labelled in red)

The galaxy was discovered by James Dunlop in 1826 and is thought to be similar to the Milky Way Galaxy, although X-ray observations show that NGC 4945 has an unusual energetic Seyfert 2 nucleus that might house a supermassive black hole.