not including astronomical watches
including celestial maps
See also : Sciences Ancient science Sciences 1600-1800 Physics Maps Instrument and equipment Books 16th century books 17th century books Ancient England
Chronology : 1540-1569 1680-1699
1020 An Astrolabe made in Cordoba
2017 SOLD for £ 610K including premium
The astrolabe was described for the first time around 550 in Alexandria but its improvement is essentially the work of the Muslim astronomers. In the tenth century of our calendar an enthusiastic theorist listed about 1000 different uses of this truly universal instrument, in the etymological meaning of 'universal'.
The use of the astrolabe extends of course to all the Muslim world as far as Spain, but the most advanced theoretical and practical treatises remain the work of the astronomers of the Middle East.
The ibn al-Saffar brothers worked in Cordoba at the beginning of the 5th century of the Hegira. Ahmed is a very important teacher whose writings will be used for four centuries. Muhammad makes the instruments.
Three astrolabes signed by Muhammad ibn al-Saffar are known. The earliest, dated 411AH corresponding to 1020/1021 in our calendar, is estimated £ 300K for sale by Sotheby's in London on April 26, lot 170. It is a big piece 19 cm overall including the suspension loop.
This astrolabe is complete but not entirely original, for a valid reason. Indeed the rete which simulates the map of the sky becomes obsolete after a few decades due to the precession of the equinoxes. The ancient users were aware of this phenomenon and the rete of this instrument was changed in Ottoman Turkey. The position of one of its star pointers suggests a date around 1550 of our calendar for this replacement part.
The mater is the rear side of the instrument. This one is set to the 66° latitude corresponding to the longest day time known by the astronomers in the Antiquity. Six original double-sided removable plates are joined with the indication of latitudes and cities, inviting for a fabulous journey into the medieval Muslim world. From South to North : Yemen, Mecca, Medina, Cairo, Qairawan, Damascus, Malaga, Cordoba, Toledo, Zaragoza.
The link in Sotheby's tweet below leads to photos of this instrument after disassembly to explain the mater, the loop, the plates, the alidade or sight rule and the rede.
1336 Astrolabe for the Use of Cordoba
2021 SOLD for £ 740K including premium
The instrument is dated 737 AH corresponding to 1336-37 CE. It is signed by a craftsman who is not known elsewhere but whose name is significant, Ahmad ibn Abi 'Abdallah al-Qurtubi al-Yamani, located in Tudela, a Navarrese town between Pamplona and Zaragoza. The author's name means that he is of Yemeni origin but had resided in Cordoba, thus combining two of the main centers of production of the astrolabes.
The 12 cm diameter instrument is made of brass. All components except the mater have been gilded, probably later. The alidade, which is used to measure the position of the stars, is missing.
Only one plate has survived. It is for the use of Cordoba with a latitude of 38° 30'. The gap under the rete leaves a place for a second plate. The rete is ornamental although its star pointers are in the pragmatic comma shape, according to Eastern practice.
The throne which carries the suspension holes is in Sevillian style. The structure of the rete seems to be of European inspiration. The choice of the star catalog is Western. The inscriptions are in an elegant mixed Andalusi Kufic script.
1505 The Computer of the Ottoman Sky
2014 SOLD for £ 960K including premium
This instrument of very high complexity in its geometric design and of remarkable sharp engraving reached an angular accuracy around one degree.
Muslim astronomers have developed this instrument for centuries, from the late second century AH. Nearly all celestial phenomena were used as references or studied: solstices, equinoxes, eclipses, planet motions. The precision was so high that the error brought by the precession of the equinoxes can now be used to date the instrument.
In seeking the knowledge of the sky, astronomers also aimed at astrology and watched the zodiacal signs.
The Sultan Bayezid II encouraged astronomy. Two astrolabes made for the use of his court are known. One of them is estimated £ 800K, for sale by Sotheby's in London on October 8, lot 135.
This brass instrument of 9.5 cm diameter is complete with all its fixed and rotating parts. The knob for the rotation on the central axis is later.
This astrolabe is indeed a masterpiece of Ottoman science, with numerous engraved inscriptions and reduced decoration. The choice of the reference star is made by the user among no less than fifteen star pointers.
It is signed and dated 911 AH, corresponding to 1505 to 1506 in our calendar. The fact that the author is not otherwise recorded just means that he did not write a treatise.
1540 Visit to an Old Canon
2016 SOLD for £ 1.8M including premium
Georg Joachim Rheticus was fond of astronomy, perhaps as a result of the appearance of the comet of 1531. He enrolled at the University of Wittenberg led by Melanchthon, the theoretician of Lutheranism.
As early as 1536, Rheticus was appointed professor of mathematics. Barely released from astrology, astronomy was at that time a branch of mathematics. The learned calculations made by Regiomontanus in the previous century had fruitfully revived the speculation about the true movements of the planets.
Two years later, Melanchthon allows Rheticus to suspend his teaching for a tour of Europe where he will visit the humanists. He hears of an old canon who spent his lifetime improving his astronomical calculations at such a point to solve the old issue of the motion of Earth, discussed since antiquity.
Rheticus so becomes the assistant to Copernicus in Frauenburg (Frombork). For nearly thirty years, the canon had refined the text of his demonstration of the heliocentric system, sometimes sending manuscripts to the very few scholars able to understand it. He does not think to edit because of an obvious difficulty to print his figures.
Rheticus supports Copernicus with enthusiasm. The younger scientist prepares a comprehensible summary with the agreement of the master. Printed in Gdansk in 1540, that 'De libris revolutionum ... narratio prima' is the first report ever published on heliocentrism. The theory is clearly and fully attributed to Copernicus without indicating the name of his efficient collaborator.
This first edition is extremely rare. A copy is estimated £ 1.2M for sale by Christie's in London on July 13, lot 87.
1543 That Copernicus book revolutionized the science
2008 SOLD 2.2 M$ including premium
Of relatively small size (20 x 27 cm, 202 pages), this book that forever changed the design we had of the universe is decorated with woodcuts and tables of calculations.
A copy of the original edition is now for sale at Christie's, lot 60 of the sale of New York on June 17. It is nicely printed, and remained extremely clean. In its flexible binding of same period, it was part of a prestigious library during the seventeenth century.
Its estimate? 900 K $.
One of my previous articles made me review the fate in two April auctions of books by other big names in science, including De humani corporis of Vesalus, also of 1543. This very important book did not find a buyer in Paris on April 23 for 140 K €, at Pierre Bergé et Associés.
New York is not Paris, but I am afraid that Christie's get some difficulties to sell this book.
POST SALE COMMENT
After revolutionizing science, this book has just revolutionized the auction world: $ 2.2 million fees included. It is a very important result for a an exceptional specimen of one of the most significant books in the history of our civilization.
1630 The Pair of Globes from the Princes of Liechtenstein
2008 SOLD 790 K€ including premium
On April 1 in Amsterdam, Christie's sells the pair of globes of the princes of Liechtenstein
This lot 137 is a pair of library globes belonging to the private collection of the princes of Liechtenstein. This set, composed as it should as a terrestrial and a celestial globe, is the work of Willem Janszoon Blaeu.
Blaeu was a famous cartographer, and we see more often his name for atlas or maps than for globes. After his death in 1638, his workshop was continued by his sons.
For the time, its size, 68 cm high, was the largest size available for globes, before being surpassed half a century later by the monumental Coronelli globes.
This brings us, of course, into the mapping science : each of the globes is composed of laid half triangles colored by hand, with also, on the earth, the two polar calottes. And we go into the great history when we know that these globes reflect some discoveries of their time.
1687 Principia by NEWTON
One of his outstanding skills was to develop mathematical methods of high complexity to analyze and support his own physical theories. Even before he was 30, he compared the motion of the planets and the fall of the bodies. Essentially preoccupied with his own understanding of the mechanism of the universe, he published reluctantly.
2016 SOLD for $ 3.7M by Christie's
The scientific stake is highly important and Halley manages to persuade Newton to disclose in their entirety his results concerning the law of universal gravitation. Edited and financed by Halley, Newton's Latin book entitled Philosophiæ Naturalis Principia Mathematica is published in 1687 with the imprimatur of the Royal Society.
The book is difficult in the opinion of the author himself and the circulation probably did not exceed 300 copies but it is of such scientific importance that Halley and Newton took care of organizing their sale through booksellers. One of them named Samuel Smith is more specifically entrusted to the supply onto the Continent and receives about 50 copies for that purpose.
On December 14, 2016, Christie's sold one of the Smith 'Continental' presentation copies of the Principia for $ 3.7M from a lower estimate of $ 1M, lot 167. It is bound in its original unrestored morocco with gold and red inlays. The recipient is not identified.
2013 SOLD for $ 2.5M by Christie's
It had been presented by Halley to King James II, patron of the Royal Society. The Royal bindings from that reign are extremely rare.
1694 Autograph Notes by Newton and Gregory
2021 SOLD for £ 1.7M by Christie's
David Gregory was one of the happy few who were skilled to construct on the Principia. A professor of mathematics at the University of Edinburgh, he was 17 years younger than Newton. He was the first to lecture on the Principia and began communicating with Newton. In 1691 Newton managed to have Gregory elected to the Savilian chair of astronomy at the University of Oxford.
In May 1694 Gregory visited Newton in Cambridge in a six day working session based on the proposed revisions to the Principia. Their combined autograph manuscripts are heavily revised working documents based on the texts under discussion from throughout the Principia.
A scrap of paper 22 x 19 cm escaped for an unknown reason the deposit of Gregory's papers at the Royal Institution in the 1860s. These one and a half pages in Latin include 39 lines in Newton’s hand, alongside 14 lines and two diagrams by Gregory. They deal with three topics : the force acting in the compression of liquids, the orbit of the comets, the build of conic figures on centripetal forces.
This unpublished scientific draft was sold for £ 1.7M from a lower estimate of £ 600K by Christie's on July 8, 2021, lot 22. Please watch the video shared by the auction house. The tweets illustrate both sides of the paper.
#AuctionUpdate A remarkable scientific manuscript by Sir Isaac Newton sold for £1,702,500, setting a new #WorldAuctionRecord for an #IsaacNewton manuscript. The manuscript contains autograph notes showing one of history's greatest scientific minds at work. □ □ pic.twitter.com/5CPmOmsiIO— Christie's (@ChristiesInc) July 8, 2021
1745-1749 The Scientific Archives of Cirey
2012 SOLD for € 960K including premium by Christie's
2018 SOLD for € 510K including premium
Helped by Maupertuis and Clairaut, the Marquise du Châtelet is able to understand and comment on Newton and Leibniz. In their château de Cirey, the marquis admires the exceptional intelligence of his wife and closes his eyes on her loves.
In 1734 Voltaire is disgraced. The Marquise lodges him in Cirey. She is 27 years old. The philosopher learns from his mistress the mathematics and physics that he had largely neglected until then.
The Marquise is a tireless worker. Her manuscripts, often written by secretaries and extensively reworked by her, surfaced a few years ago in an attic. Important pieces were sold by Christie's on October 29, 2012. A call for donations had been issued for an acquisition by the French State and 1400 researchers from around the world had signed a petition for a pre-emption. Both moves were unsuccessful because of the high prices that were expected.
The top lot was a set of 35 workbooks prepared from 1745 to 1749 by Madame du Châtelet for the didactic abstracts accompanying her translation of Newton's Principia Mathematica. Estimated € 400K, it was acquired in that sale for € 960K including premium by the Musée des Lettres et Manuscrits de Paris which had immediately communicated its commitment to exhibit it to the public.
The museum was managed by Aristophil. In the same sale, Aristophil had anonymously acquired 8 lots of manuscripts by the Marquise, 2 lots of manuscripts by Voltaire on Newton and a portrait of the Marquise attributed to Marie-Anne Loir.
These 12 lots will be sold in Paris - Drouot on November 19 by OVA, the company in charge of the legal dispersion of the Aristophil collections. The auction is operated by Artcurial. Pieces from the 2012 sale are now lots 679 to 690. The abstracts of the Principia are the lot 689.
Lot 689 SOLD for € 510K including premium