Dot Porter, Curator, Digital Research Services at the University of Pennsylvania Library, offers a video orientation to Penn Library’s LJS 188, Ynstruction of the ephimeredes. This manuscript was written in England ca. 1540 and it includes instructions in 22 chapters for the use of ephemerides, astronomical tables giving the positions of planets, the sun, and the moon. It also includes tables for the latitude of the moon, hourly motion of planets, duration of lunar eclipses, and lunar motion.

You can see the full online facsimile of this work in Penn in Hand and you can download all of the images and metadata from OPenn.  You can also download a copy of this video from ScholarlyCommons, the University of Pennsylvania’s open access institutional repository.