NGC 6520 on July 7th, 02:06ut. NGC6420 is a well defined open star cluster within the dense galactic center. On the right of the image is an absorption nebula Barnard 86 is also sometimes called the Ink Spot Nebula, from which the stars of NGC 6520 formed The nebula is a Bok globule located about 500 light-years from us. This nebula contains much opaque dust that blocks light from the many stars that would have been visible in the background. Surrounding NGC 6520 is part of the tremendously dense starscape in the bulge of our Milky Way Galaxy and located in the Constellation Sagittarius.