Star Atlas of the American Association of Variable Star Observers ... for the Epoch 1900 ... from Revised Harvard Photometry ....

[Cambridge]: Harvard College Observatory, 1936. First Edition. Punched holes with text secured by brass fold-over pins.. Very good; some wear at the edges.. Small folio, meas ppx. 380 x 310 mm; [4] pp + 20 leaves of plates. Printed recto only; entirely printed as "blueprints". Inserted is a black and white rendering of a moonscape - a view looking south from Gassendi by F Chollar and R Porter; meas. appx. 234 x 357 mm.; printed on cloth.

A detailed atlas of stars in both northern and southern hemispheres showing variable, binary, clusters, and nebula of magnitudes -3 to 6 (Flamsteed scale). It also incorporates the work of both Schlesinger and Prager. Produced at a time of great change in astronomy: the changeover from observations of the solar system as object to examining the stars for their own sake and understanding their actions. The period also benefits from new instrumentation and sophisticated mathematical processing of recorded images. See Pannekoek, chapters 39 & 40.