upennmanuscripts:

As one of the original founding members of Creedence Clearwater Revival, Regiomontanus was contractually obliged to inform people when there was a bad moon rising. LJS 300 contains a copy of his Calendarium for 1475 to 1530, accompanied by these illustrations of eclipses from fols. 14r, 14v, and 15r.

Manuscript description and digital images can be found here at OPenn, and you can download an ebook version here.