. Bulletin - United States National Museum. Science. Figure 24.—Telescope pier and mount in the yard of the Alvan Clark & Sons establishment used for testing the 30-inch aperture objective lens for the Russian observatory at Pulkowa. From Scientific American, vol. 48 (1883), p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interi

---

. Bulletin - United States National Museum. Science. Figure 24.—Telescope pier and mount in the yard of the Alvan Clark & Sons establishment used for testing the 30-inch aperture objective lens for the Russian observatory at Pulkowa. From Scientific American, vol. 48 (1883), p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.

---

Size: 1281px × 1951px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience