This is the supernova remnant known as the Spaghetti Nebula, but more formally as Simeis 147 or Sharpless 2-240. It was discovered at the Crimean Astrophysical Observatory in 1952, an observatory also known by its name of Simeiz for the location where one of its facilities was located, thus the name of the catalogue of objects that includes entry #147. The supernova that created this nebula exploded some 40,000 years ago and is about 3,000 light years away. In the sky it stretches across more than 3°, so it is big! The field of view here is 6.6° by 4.4°. The bright star at right is Elnath in T

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