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 M47. These maps works well with red dot finders and green laser pointers
. The Reference Line Method method adapts well to both binoculars and telescopes.
How to Use Reference Line Maps to locate deep sky objects.
Confirmed by P. Messier Renaix
Mapped by P. Messier Renaix