Astronomy with an Opera-glass / A Popular Introduction to the Study of the Starry Heavens with the Simplest of Optical Instruments

The author offers a practical introduction to observing the night sky with a small handheld glass, guiding beginners through seasonal tours of constellations and notable stars visible to the unaided eye or with an opera-glass. Organized by spring, summer, autumn, and winter sections, it provides star maps, enlarged charts, and descriptions of individual constellations and striking objects, highlighting what an opera-glass can reveal and distinguishing features that require larger telescopes. A final chapter treats the Moon, planets, and the Sun with observing tips and illustrative cuts to help amateurs identify lunar seas, planetary disks, and familiar nebulous regions.