“Nasim has written an in-depth history of nineteenth-century nebular observations. His ability to muster the history of science, art, and philosophy to make evident the essential place of drawing during this period makes this an invaluable book. Even more impressive, the ideas explored here have broad generative potential. The careful attention to the distinctive qualities of different types of images and their uses, as well as the clear demonstration of how image-making shapes understanding have ready applicability to other periods in the history of astronomy and the history of science more generally.”

Elizabeth A. Kessler, Stanford University | Journal for the History of Astronomy

“Nasim reverses the conventional view of drawing procedures of the nineteenth century. He does not enquire into how drawing techniques displayed perception. Rather, he queries how techniques of visualization have been able to guide perception and lead to understanding...Beautifully written and engrossing, this book will be an indispensable companion to the study of nineteenth-century scientific practices. Critically and efficiently merging art history with the history and philosophy of science, Nasim’s work declares that imaging procedures of the nineteenth century deserve new historical and philosophical attention. It is an elegant and convincing exhortation to enlarge the methodical perspective on the development of scientific observation and visualization.”
 

Nuncius

“The book has a great deal to offer anyone exploring the various interconnections between science and art. Its emphasis on the creation, use, and transformation of material records provides an entry point for people from many fields. . . . A gorgeous volume that is both aesthetically and intellectually valuable.”

Matthew Stanley | Endeavour

“Travel to the nebulae during the nineteenth century and find there a time when scientists could observe with their hands rather than eyes, when they could measure by drawing, and where graphite, stylus, and paper joined the telescope in importance. This is when publicly shared standards about what constituted a scientific observation were still in formation—and it is beautiful. Omar W. Nasim invites us to go where few have ventured, to the unstable, informal and private ‘context of discovery,’ and to admire its splendor.”

Jimena Canales, Harvard University

“Observing by Hand is a thoughtful, deeply researched, and important study that engages with significant and fascinating topics: the representations of nebulae—with the focus on drawings—by various observers in the nineteenth century and what such representations can tell us about the nature of scientific observation in general in that century. A major contribution to scholarship.”

Robert W. Smith, University of Alberta

“Observing the position of stars is one thing, observing extended and faint nebulae in a time before photography is quite another. How did researchers pin down their observations, how did they communicate them? In his brilliant analysis of astronomical practice, Omar W. Nasim shows how nineteenth-century observers coped with such challenges. He provides an intriguing case study of how closely observing and communicating are intertwined.”

Friedrich Steinle, Technische Universität Berlin

“In Observing by Hand, Omar W. Nasim focuses on the unpublished notebooks and drawings of six of the most significant nebulae observers of the nineteenth century. He convincingly demonstrates that drawing was a fundamental component of observation and contributed in essential ways in constituting these elusive phenomena, how they were visualized, conceptualized, and studied. This is an impeccably researched and carefully crafted piece of work, and one that provides the closest study of the practices of observation in astronomy—and possibly even in the history of science altogether—that exists to this day.”

Charlotte Bigg, CNRS/Centre Alexandre Koyré d’Histoire des Sciences et des Techniques, Paris