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Illustrating the Cosmos

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Our research in the Lick Observatory archives has uncovered correspondence and sketches from Étienne Trouvelot, a French artist and astronomer known for his whimsical illustrations of celestial objects. Trouvelot worked with the Lick Observatory's first director, Edward S. Holden, at the U.S. Naval Observatory while Holden was a professor of astronomy there. It seems they continued to communicate throughout Holden's tenure at the Lick.

As an artist and a scientist, Trouvelot occupies an interesting position within the nineteenth-century discussion of objectivity. In one letter to Holden, not displayed here, he suggests that a good observer must possess both "fire and ice." It seems that for Trouvelot, interfacing with the cosmos was both an aesthetic experience and an act of cool judgement; we can perhaps sense this tension between sensation and sensibility in his illustrations. In another letter to Holden, displayed here, he urges Holden to consider the capacities of the eye and the advantages of observing the cosmos directly through the telescope, rather than relying secondarily on the images produced by the camera.

An oversized set of prints of Trouvelot's drawings (approximately 2' by 3'), two of which are displayed in case 3 and case 4, was gifted to the Lick Observatory by John R. Jarboe in 1887. The set originally consisted of 15 plates, but five have been lost. W.H. Wright, a later director of the Lick, wrote in 1937 that the illustrations "were of little scientific value and were finally relegated to a store room." The remaining prints are accessible through UCSC Special Collections, or they can be viewed online through the digital collections of the New York Public Library.

Despite Wright's assessment of the value of the prints, we wonder how Trouvelot's relationship with the Lick ultimately impacted the illustrations and photographs created there. Holden created astronomical illustrations in his own scrapbook, even though he ultimately held that photographic images are much more objective and factual than illustrations. The archives also contain several illustrations created by other astronomers at the Lick Observatory; displayed here are illustrations and sketches by James Keeler and J.M. Schaeberle, as well as images collected in the archives from astronomers at other observatories.

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Case 3: Photographing and Illustrating the Cosmos Christine Turk
Contents of this path:
1. Illustrating the Cosmos
2. Photographing the Cosmos
Case 3: Illustrating and Photographing the Cosmos Christine Turk
Contents of this path:
1. The Great Nebula in Orion, illustration by E.L. Trouvelot, 1875.
2. The Trouvelot Astronomical Drawings Manual, 1882. In the book, Trouvelot writes, "Those unacquainted with the use of optical instruments generally suppose that all astronomical drawings are obtained by the photographic process, and are, therefore, comparatively easy to procure; but this is not true. Although photography renders valuable assistance to the astronomer in the case of the Sun and Moon, as proved by the fine photographs of these objects taken by M. Janssen and Mr. Rutherfurd ; yet, for other subjects, its products are in general so blurred and indistinct that no details of any great value can be secured. A well-trained eye alone is capable of seizing the delicate details of structure and of configuration of the heavenly bodies, which are liable to be affected, and even rendered invisible, by the slightest changes in our atmosphere."
3. Sketch of Orion Nebula, E.L. Trouvelot, 1875.
4. Letter from E.L. Trouvelot to E.S. Holden, 1894.
5. Illustration of Mars, J.M. Schaeberle (astronomer), 1892.
6. Illustration of Mars, J.M. Schaeberle (astronomer), 1892.
7. Illustration of Jupiter, James Keeler (astronomer), 1889.
8. "Astronomical Photography and Some of Its Merits," Charles Perrine, circa 1890s. Transcription: "The exposure necessary to bring out the structure of faint nebulae are very long, often of three and four hours duration and for some special objects, ten or twelve hours. These long exposures are attended with difficulties, many of which would disappear if the necessary light action could be secured in one or two hours...the negatives secured with shorter exposure would be of greater excellence and would show structure that is now lost to thinning due to difficulties of guiding [the telescope] during very long exposures."
9. Andromeda Nebula, photographed by Edward Barnard, 1894.
10. Great Spiral Nebula (M51), photographer unknown (likely James Keeler), 1899. This is a four-hour exposure of the Great Spiral Nebula using the 36" Crossley reflector. Note the loss of detail described by Perrine or "faint nebulosity" described in the letters here; compare with the image of the spiral galaxy from 1914. N.B.: This is now known as the Whirlpool Galaxy. Astronomers did not yet understand the difference between nebulae and galaxies, believing that they were of the same nature. Most thought that all of these distant structures were contained within the Milky Way galaxy itself. The difference was confirmed in the 1920s; the work of one of the Lick's astronomers, Heber Curtis, contributed in part to this development.
11. Orion Nebula, photographed by James Keeler, undated.
12. Glass plate positive of Orion Nebula, photographer unknown, 1928.
13. Glass plate positive of Holmes' Comet, photographed by Edward Barnard, 1892.
14. Glass plate positive of Spiral Nebula, photographer unknown, 1914.
15. Correspondence with Photogravure and Color Company, 1907.
16. Correspondence with Photogravure and Color Company, 1907.
17. Etching of the Great Lick Reflector Dome, 1888.
18. Edward Barnard's first photograph of the Milky Way, 1889. Three-hour exposure. Reflecting on this photograph in a publication titled "On the Photographs of the Milky Way at the Lick Observatory in 1889," Barnard writes, "This remarkable picture shows the cloud-like forms like waves of spray. A curving lane of darkness runs from the lower left-hand portion of the picture and curves gracefully upwards to the place of Jupiter. It is singularly like the stem of a great leaf. At the middle of the picture it is seen to pass behind some of the clouds of stars and emerge beyond, showing us clearly which part of the Milky Way at that point is nearest to us... "
19. Pleiades star cluster, photographer unknown, circa 1898.
20. Photograph of the moon, photographer unknown, circa 1936.
21. Halley's Comet, photographer unknown, Lick Observatory, 1910.
22. Cyanotype print of the Great Lick Reflector, photographer unknown, undated.
23. Illustrating the Cosmos
24. Photographing the Cosmos

Contents of this path:

The Trouvelot Astronomical Drawings Manual, 1882. In the book, Trouvelot writes, "Those unacquainted with the use of optical instruments generally suppose that all astronomical drawings are obtained by the photographic process, and are, therefore, comparatively easy to procure; but this is not true. Although photography renders valuable assistance to the astronomer in the case of the Sun and Moon, as proved by the fine photographs of these objects taken by M. Janssen and Mr. Rutherfurd ; yet, for other subjects, its products are in general so blurred and indistinct that no details of any great value can be secured. A well-trained eye alone is capable of seizing the delicate details of structure and of configuration of the heavenly bodies, which are liable to be affected, and even rendered invisible, by the slightest changes in our atmosphere."
Sketch of Orion Nebula, E.L. Trouvelot, 1875.
The Great Nebula in Orion, illustration by E.L. Trouvelot, 1875.
Letter from E.L. Trouvelot to E.S. Holden, 1894.
Illustrations of Orion Nebula, Frederik Kaiser (astronomer), 1844.
Illustration of Mars, J.M. Schaeberle (astronomer), 1892.
Illustration of Mars, J.M. Schaeberle (astronomer), 1892.
Illustration of Jupiter, James Keeler (astronomer), 1889.