Astronomy picture of the day 30-10-204 - A Spectre in the Eastern Veil

A Spectre in the Eastern Veil
Image Credit &Copyright:Ken Crawford (Rancho Del Sol Observatory)

Explanation: Frighteningforms and scary faces are a mark of the Halloween season. They also hauntthis cosmic close-up of the eastern Veil Nebula. The Veil Nebula itself is a large supernova remnant, the expanding debris cloud from the death explosion of a massive star. While the Veil is roughly circular in shape and covers nearly 3 degrees on the sky in the constellation Cygnus, this portion of the eastern Veil spans only 1/2 degree, about the apparent sizeof the Moon. That translates to 12 light-years at the Veil's estimated distance, a reassuring 1,400 light-years from planet Earth. In the composite of image data recorded through broad andnarrow band filters, emission from hydrogen atoms in the remnant is shown in red with strong emission from oxygen atoms in blue-green hues. Of course, in the western part of the Veil lies another seasonal apparition,the Witch's Broom.