On the Construction of a Silvered Glass Telescope Fifteen and a half inches in aperture, and its use in celestial photography

A quiet yet ambitious effort from the mid‑nineteenth century unfolds in this guide to building a fifteen‑and‑a‑half‑inch silvered‑glass telescope. Set against the backdrop of the Smithsonian Institution’s early mission to “increase and diffuse knowledge,” the opening pages recount the bureaucratic birth of a national center for research, giving listeners a sense of the era’s civic pride in scientific advancement.

Beyond the institutional prelude, the work dives into the practical art of telescope making. Detailed instructions walk the reader through grinding lenses, shaping mirrors, and assembling the tube, while interspersed notes explain the optical principles that make the instrument suitable for celestial photography. The narrative captures the excitement of early astronomers who, with painstaking craftsmanship, ushered in a new way of recording the night sky—offering a blend of hands‑on guidance and historical flavor that will intrigue both hobbyist makers and lovers of scientific heritage.