Astronomy with an opera-glass: a popular introduction to the study of the starry heavens with the simplest of optical instruments, with maps and directions to facilitate the recognition of the constellations and the principal stars, visible to the naked eye
Garrett P. Serviss's popular observing manual, published by D. Appleton in New York in 1890, guided amateur stargazers in finding constellations with an opera-glass. Its plates are white stars printed out of solid black grounds, with constellation names in small capitals, faint linking lines, circular sky charts, nebulous smudges, and a dark disc holding a rayed sun and planet dots.
