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Pickering's Triangle is the northeast section of the Veil Nebula, a large supernova remnant in the constellation Cygnus. Surprisingly, even though it is the brightest section of the Veil after the Eastern Veil and Western Veil (see the image preceding and following this one), it is not in the NGC or IC catalogues (though it is sometimes mistakenly referred to as NGC 6979).

This is a bicolor narrowband image with H:O:RGB exposures of 4:4:1 hours (the RGB is just for the stars).