According to articles and books published at the end of the nineteenth century, the introduction of photography to astronomy was one of the most notable events in the discipline in a period chock full of important inventions and amazing discoveries. Edward Holden, director of the Lick Observatory in California, between 1887 and 1898, was rapturous about the promise of photography: it would simplify astronomical observation, increase the reliability of data and produce permanent records of the heavens untainted by distraction, ill (...) discipline or bias. This would happen, he argued, because of the mechanical virtues of the camera:It does not tire, as the eye does, and refuse to pay attention for more than a small fraction of a section, but it will faithfully record every ray of light that falls upon it even for hours and finally it will produce its automatic register [ctdot ] [that] can be measured, if necessary, again and again. The permanence of the records is of the greatest importance, and so far as we know it is complete [ctdot ] We can hand down to our successors a picture of the sky, locked in a box. (shrink)

How do we know what an amoeba looks like? How can doctors see the details of our skeletons and internal organs? All of these things are made possible through the innovations of photography. The author provides a primer on the applications of photography to science as she explores the multiple facets of this complex relationship.

This paper deals with one of the first attempts to measure simple reactions in humans. The Swiss astronomer Adolph Hirsch investigated personal differences in the speed of sensory transmission in order to achieve accuracy in astronomy. His controversial results, however, started an intense debate among both physiologists and astronomers who disagreed on the nature of these differences. Were they due to different eyes or brains, or to differences in skill and education? Furthermore, they debated how to eliminate them. Some, for (...) example, wanted to eliminate the observer, and prescribed the use of new technologies like the electro-chronograph or photography, while others believed in discipline and education. By debating the nature of these differences, astronomers and physiologists sketched both different conceptions of ‘man’ and different paths to objectivity. These diverse conceptions, moreover, were tied to current nineteenth-century debates, such as the benefits or disadvantages of railroads, telegraphy and the standardization of time and longitudes. By focusing on the debates surrounding the speed of sensory transmission, this paper reevaluates the history of astronomy, physiology and experimental psychology. Furthermore, in investigating astronomy's relation to the human sciences, it uncovers profound connections in the traditionally separate histories of objectivity and the body.L'heure sera distribuée dans les maisons,comme l'eau ou le gaz.Adolph Hirsch. (shrink)

Stargazing Knight Errant, beware of the day When the Hottentots catch thee observing away! Be sure they will pluck thy eyes out of their sockets To prevent thee from stuffing the stars in thy pocketsIf Herschel should find a new star at the Cape, His perils no longer would pain us He will salt the star's tail to prevent its escape And call it ‘The Hottentot Venus’.Astronomy has long been recognized as a tool of empire. Its service to navigation and (...) geography have made it indispensable to European expansion. Britain in particular excelled at this brand of control; each day when the sun set on the British empire, its telescopes continued to enhance imperial power.While the above claims are no longer controversial, we have hardly begun to understand the extent to which imperialism subsequently changed the nature of the physical sciences. (shrink)

In his comprehensive survey of the work of William Herschel, published in the Annuaire du Bureau des Longitudes for 1842, Dominique Arago argued that the life of the great astronomer ‘had the rare privilege of forming an epoch in an extended branch of astronomy’. Arago also noted, however, that Herschel's ideas were often taken as ‘the conceptions of a madman’, even if they were subsequently accepted. This fact, commented Arago, ‘seems to me one that deserves to appear in the history (...) of science’. From the time Herschel published his first paper in the Philosophical transactions in 1781, he was subjected to the suggestion of lunacy. His patron and friend William Watson, told him that after his claims for the extraordinary power of his telescopes, ‘your prognosis that some would think you fit for Bedlam has been verified’. On learning of Herschel's supremely accurate new micrometer, the astronomer Alexander Aubert exclaimed to Herschel that ‘we would go to Bedlam together’: Aubert wrote to Herschel in January 1782 that he should ‘mind not a few jealous barking puppies: a little time will clear up the matter, and if it lays in my power you would not be sent to Bedlam alone, for I incline much to be of the party’. (shrink)

By the early years of the twentieth century, astronomers regarded photography as one of the most valuable tools at their disposal, a technique which not only provided an accurate and reliable representation of astronomical phenomena, but also radically changed the role of the astronomical observer. Herbert Hall Turner, professor of astronomy at Oxford, wrote in 1905: ‘The wonderful exactness of the photographic record may perhaps best be characterised by saying that it has revealed the deficiencies of all our other astronomical (...) apparatus – object-glasses and prisms, clocks, even the observer himself.’ H. C. Russell, government astronomer in Sydney, suggested that photography might in the future make the observer redundant: ‘In many cases the observer must stand aside while the sensitive photographic plate takes his place and works with the power of which he is not capable… I feel sure that in a very few years the observer will be displaced altogether.’ Such visions were not uncommon at the time, emanating from the trust invested in the photographic process after the spectacular achievements of the late nineteenth century. (shrink)

The development of photographic reproduction in the late nineteenth century permitted images in a range of visual media to be published in the press. Focusing on the popular scientific monthly Knowledge, this paper explores the evidentiary status of reproductions of astronomical photographs. After succeeding its founder Richard Anthony Proctor in 1889, the new editor of Knowledge, Arthur Cowper Ranyard, introduced high-quality collotype reproductions into each number of the magazine. One of Ranyard's main interests was the structure of the Milky Way, (...) evidence for which was only available through astronomical photographs. As Ranyard reproduced photographs in support of his arguments, he blurred the boundaries between the published collotype, the source negative and the astronomical phenomena themselves. Since each of these carried different evidentiary value, the confusion as to what, exactly, was under discussion did not go unremarked. While eminent astronomers disputed both Ranyard's arguments and the way in which they were presented, Knowledge disseminated both striking astronomical images and also a broader debate over how they should be interpreted. (shrink)

In 1833 John Herschel published a graphical method for determining the orbits of double stars. He argued that his method, which depended on human judgment rather than mathematical analysis, gave better results than computation, given the uncertainty in the data. Herschel found that astronomy and terrestrial physics were especially suitable for graphical treatment, and he expected that graphs would soon become important in all areas of science. He argued with William Whewell and James D. Forbes over the process of induction, (...) over the application of probability, and over the moral content of science. Graphs entered into all these debates; but because they constituted a method, not a metaphysics, they were acceptable to most practicing scientists and became increasingly popular throughout the nineteenth century. (shrink)