The Veil Nebula is a large supernova remnant in the constellation Cygnus. The supernova which created the nebula occurred more than 30.000 years ago, about 1.600 light years away towards the Cygnus arm of our galaxy. The brightest section, designated NGC 6992 and NGC 6995, forms the eastern part of the main loop. It features a filamentary structure which is visible in big telescopes and on this photograph. The remnant's dominating emission line is H alpha (red), but there is also some green [OIII] emission towards the eastern edge.
Europeans call it the Cirrus Nebula because of its resemblance to cirrus clouds.
NGC 6992/5 - Veil Nebula Arc, refractor photograph.
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