Flemming H. Kristensen
The Shark Nebula in Cepheus
The Shark Nebula is a huge cloud of interstellar dust, which is lit by both nearby stars and some bright blue giant stars embedded in the dust itself, seen here as bright patches of blue. The densest parts of the cloud totally obscures the light from background stars, and looks like dark brown spots. The dust consists of small carbon rich particles which were once expelled from the outer layers of red giant stars during the last part of their existence before they exploded as supernovas.
This image was created during three consecutive nights, and was stacked from 130 individual exposures, each 5 minutes long.
The Shark Nebula in Cepheus
The Shark Nebula is a huge cloud of interstellar dust, which is lit by both nearby stars and some bright blue giant stars embedded in the dust itself, seen here as bright patches of blue. The densest parts of the cloud totally obscures the light from background stars, and looks like dark brown spots. The dust consists of small carbon rich particles which were once expelled from the outer layers of red giant stars during the last part of their existence before they exploded as supernovas.
This image was created during three consecutive nights, and was stacked from 130 individual exposures, each 5 minutes long.