Steven Mandel trains his 7-inch telescope on a portion of the Veil Nebula, a cloud of gas 1, 600 light-years away.

FORBES: A Star Is Born

Mandel's particular obsession is imaging: using long exposures to make pictures of celestial bodies--like his shot of the Veil Nebula supernova remnant, which cannot be seen merely by gazing through a telescope.

FORBES: A Star Is Born