Francis Baily

Royal Astronomical Society portrait
On the new method of determining the longitude by the culmination of the moon and stars, 1824
Baily's beads four seconds before totality

English astronomer.

- Francis Baily
Royal Astronomical Society portrait

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Entrance to the Royal Astronomical Society at Burlington House, London

Royal Astronomical Society

Learned society and charity that encourages and promotes the study of astronomy, solar-system science, geophysics and closely related branches of science.

Learned society and charity that encourages and promotes the study of astronomy, solar-system science, geophysics and closely related branches of science.

Entrance to the Royal Astronomical Society at Burlington House, London
Entrance to the Royal Astronomical Society at Burlington House, London
The Royal Astronomical Society at the University of London History Day, 2016.
The Gold Medal of the Royal Astronomical Society awarded to Asaph Hall
The council room at the RAS

Francis Baily and George Airy were elected a record four times each.

Diamond ring effect visible during the total solar eclipse of August 21, 2017, in Ravenna, Nebraska. (The diffraction spikes emanating tangentially from the diamond are an artifact of the camera optics, not a natural phenomenon.)

Baily's beads

Feature of total and annular solar eclipses.

Feature of total and annular solar eclipses.

Diamond ring effect visible during the total solar eclipse of August 21, 2017, in Ravenna, Nebraska. (The diffraction spikes emanating tangentially from the diamond are an artifact of the camera optics, not a natural phenomenon.)
The diamond ring effect as totality ends during the total solar eclipse of August 21, 2017, in central Wyoming. The rainbow coloration is a lens flare and not a natural phenomenon.

The effect is named after Francis Baily, who explained the phenomenon in 1836.

Ulugh Beg's Statue in Samarkand, Uzbekistan

Ulugh Beg

Timurid sultan, as well as an astronomer and mathematician.

Timurid sultan, as well as an astronomer and mathematician.

Ulugh Beg's Statue in Samarkand, Uzbekistan
Jade dragon cup that once belonged to Ulugh Beg, 1420–1449 AD, British Museum.
Ulugh Beg and his astronomical observatory scheme, depicted on the 1987 USSR stamp. He was one of Islam's greatest astronomers during the Middle Ages. The stamp says "Uzbek astronomer and mathematician Ulugbek" in Russian.
Observatory built by Ulugh Beg in the 1420s. The site was later rediscovered by Russian archaeologists in 1908.
Ulugh Beg Observatory in Samarkand. In Ulugh Beg's time, the walls were lined with polished marble.
Ulugh Beg's headstone at the foot of Timur's in the Gur-e-Amir
The Ulugh Beigh crater on the moon, named for Ulugh Beg.

More recent editions are those by Francis Baily in 1843 in vol. xiii of the Memoirs of the Royal Astronomical Society and by Edward Ball Knobel in Ulugh Beg's Catalogue of Stars, Revised from all Persian Manuscripts Existing in Great Britain, with a Vocabulary of Persian and Arabic Words (1917).

John Flamsteed by Thomas Gibson, 1712

John Flamsteed

English astronomer and the first Astronomer Royal.

English astronomer and the first Astronomer Royal.

John Flamsteed by Thomas Gibson, 1712
Plaque marking the grave of John Flamsteed and his wife in the chancel of St Bartholomew's Church in Burstow, Surrey
Bust of John Flamsteed in the Museum of the Royal Greenwich Observatory

Francis Baily. A Catalogue of the Positions (in 1690) of 564 Stars observed by Flamsteed, but not inserted in his British Catalogue, together with some Remarks on Flamsteed's Observations. (1829)

Entrance to the Royal Astronomical Society at Burlington House, London

President of the Royal Astronomical Society

The President of the Royal Astronomical Society (prior to 1831 known as President of the Astronomical Society of London) chairs the Council of the Royal Astronomical Society (RAS) and its formal meetings.

The President of the Royal Astronomical Society (prior to 1831 known as President of the Astronomical Society of London) chairs the Council of the Royal Astronomical Society (RAS) and its formal meetings.

Entrance to the Royal Astronomical Society at Burlington House, London

Francis Baily and George Airy were elected a record of four times each.

Nicolas-Louis de Lacaille

French astronomer and geodesist who named 14 out of the 88 constellations.

French astronomer and geodesist who named 14 out of the 88 constellations.

A memorial to the Abbé de Lacaille and Thomas Maclear, at Aurora in the Western Cape of South Africa. The English portion of the inscription reads: "This is the site of the Maclear Beacon positioned in 1838 near the original North Terminal of the Arc of Meridian positioned by Abbé de Lacaille, the first surveyor to introduce Geodetic Surveying into South Africa."  Open the image to see the Afrikaans portion.
Leçons elementaires d'astronomie, géométrique et physique, 1755 edition
Messier 55 is a globular cluster discovered in 16 June 1752.

A catalogue of 9766 stars in the southern hemisphere,for the beginning of the year 1750: from the observations of the Abbé de Lacaille, made at the cap of Good Hope in the years 1751 and 1752; with a preface by Sir J. F. W. Herschel (1847), giving zone observations of about 10,000 stars, re-edited by F. Baily

George Biddell Airy in 1891

George Biddell Airy

English mathematician and astronomer, and the seventh Astronomer Royal from 1835 to 1881.

English mathematician and astronomer, and the seventh Astronomer Royal from 1835 to 1881.

George Biddell Airy in 1891
George Biddell Airy
Computer-generated image simulating an Airy Disk
Airy's Transit Circle in the Transit Circle Room, Greenwich
Prime Meridian in Greenwich
George Biddell Airy caricatured by Ape in Vanity Fair Nov 1875
Original Tay Bridge from the north
Destruction of the Tay Bridge
George Biddell Airy (John Collier, 1883)
On sound and atmospheric vibrations with the mathematical elements of music, 1871

Elected president of the Royal Astronomical Society four times, for a total of seven years (1835–37, 1849–51, 1853–55, 1863–64). No other person has been president more than four times (a record he shares with Francis Baily).

Tobias Mayer

German astronomer famous for his studies of the Moon.

German astronomer famous for his studies of the Moon.

Birthplace of Tobias Mayer

His star catalogue was re-edited by Francis Baily in 1830 (Memoirs of the Royal Astronomical Society IV, 391) and by Arthur Auwers in 1894.

Part of the facade of Camp Hopson of Newbury, dating from 1663 with classical brick pilasters, in 2014.

Newbury, Berkshire

Market town in the county of Berkshire, England, and is home to the administrative headquarters of West Berkshire Council.

Market town in the county of Berkshire, England, and is home to the administrative headquarters of West Berkshire Council.

Part of the facade of Camp Hopson of Newbury, dating from 1663 with classical brick pilasters, in 2014.
Donnington Castle
The pedestrianised Northbrook Street
Greenham Common in the late 80s
Newbury Town Hall, completed in 1881
View of Newbury and surroundings from Donnington Castle
Part of the Vodafone Headquarters
The Kennet and Avon Canal runs through the middle of Newbury
The Newbury Bypass near Donnington
The bridge next to the Lock Stock and Barrel pub
Cheap Street
Main Street in Newbury, view from the Bridge
Intersection between Northcroft Street, Northbrook Street and Bridge Street
The Berkshire Stand and The Grandstand at Newbury Racecourse
Newbury R.F.C. home ground
The Corn Exchange
St Nicolas' Church
Richard Adams
Francis Baily

Francis Baily (1774–1844) – astronomer

Seen in the 1824 star chart set Urania's Mirror (in the lower right)

Telescopium

Minor constellation in the southern celestial hemisphere, one of twelve named in the 18th century by French astronomer Nicolas-Louis de Lacaille and one of several depicting scientific instruments.

Minor constellation in the southern celestial hemisphere, one of twelve named in the 18th century by French astronomer Nicolas-Louis de Lacaille and one of several depicting scientific instruments.

Seen in the 1824 star chart set Urania's Mirror (in the lower right)
The constellation of Telescopium, the telescope, as it can be seen by the naked eye
An artist's depiction of the orbits of the hierarchical triple star system HR 6819, with the inferred black hole (red orbit) in the inner binary
Location of HR 6819 the star system containing the black hole.
The globular cluster NGC 6584, as observed with the Hubble Space Telescope
The interacting galaxy system NGC 6845, as observed with GALEX

Telescopium was later much reduced in size by Francis Baily and Benjamin Gould.