“Pickering's Triangle” is the name of the central portion of the “Veil” nebula, located in the constellation Cygnus, with a characteristic triangle shape, however much weaker than the two main rings that form this supernova remnant. The “Pickering Triangle” does not have its own NGC number: although NGC 6979 is occasionally used to refer to it, in reality NGC 6979 would only indicate the less extensive portion of supernova remnant adjacent to it. It was discovered photographically in 1904 by Willamina Fleming after the publication of the New General Catalogue, but the credit went to Edward Charles Pickering, the director of the Harvard observatory where she worked, as was unfortunately the custom of the time.