Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)A set of 7 Reference Line Maps, star charts and DSS photos of NGC 2244, Caldewll Object C49 & Herschel 400 Object. This series of maps has been developed for use with the Red Dot Finders and …
A set of 7 Reference Line Maps, star charts and DSS photos of M50. These maps works well with red dot finders and green laser pointers. The Reference Line Method method adapts well to both binoculars and telescopes.