The difficulties of cataloging dark nebulae
Monday, October 6, 2014 - 07:01
in Astronomy & Space
E. E. Barnard is an astronomer perhaps best known for measuring the proper motion of a faint red dwarf about six light years away, now known as Barnard's star. But Barnard was also a pioneer of astrophotography, and he did a great deal of work studying dark nebulae.