De maculis solarib. et stellis circa Iouem errantibus : accuratior disquisitio, ad Marcum Velserum ... perscripta. Interiectis obseruationum delineationibus
A 1612 Latin astronomy treatise by Christoph Scheiner, printed at Augsburg, setting out his observations of sunspots and of stars near Jupiter for scholars and astronomers. Its plates show an eye-and-lens optical diagram, circular sunspot drawings with radiating or cloud-like shading, and rows of small hand-plotted star positions on the disc of the sun. A designer might take the dense, radial line work and the stippled circular forms as sources for texture, halftone patterns, and scientific diagram styling.
