Related Object Info
research talk illustration: Bache Photographic Telescope. July 18, 1896
2001-1-0029a-z are 26 sheets of pale grey cardstock onto which are glued photographs of Harvard College Observatory buildings, scientific instruments, and research stations (including that in Arequipa, Peru), celestial photographs taken with Harvard astrographs, and records of data analysis (much of it done by women "computers" employed at the Observatory). The cards were used to illustrate a talk about the Observatory and its research.
Topics include stellar spectroscopy, photometry, novae, binary stars, and variable stars. The images and graphs are captioned in ink in a cursive hand, perhaps by Williamina Fleming.
This particular card shows:
y. "Bache Photographic Telescope. July 18, 1896. Exposure 36m. Scale 30"=1 mm. Centre of Region 7h - 86°." Black and white photograph, dry mounted, ca. 1896. Penciled marks on reverse: "R. A. 19.8h / Dec _90°" and "D4680 from B16900" and "N" and "S."