Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)A set of maps, star charts and ISS photos of Coma Berenices Open Cluster, Melotte 111 . This open cluster was first charted by Ptolemy. It occupies 4.5 degrees, contains Caldwell Object C35 (NGC 4889), and is best viewed …
Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)
A set of 7 Reference Line Maps, charts and DSS images of M45 (the Pleiades, the Seven Sisters). This series of maps has been developed for use with the Reference Line Method. This method adapts well to both binoculars …