NGC 6960 ... Veil Nebula
Picture taken on 9/12/2010
The nebula is an ancient supernova remnant ; the star that originated this object exploded several thousand years ago. What is now visible filaments are weak, is still growing at a rate of tens of km / s, in any long-exposure CCD or a stand different filaments arranged into three main groups: the further west is NGC 6960 (C 34), toward the bright star 52 Cygni , the second a little further east, is formed from the nebula NGC 6974 and NGC 6979, with its concave to the east as the previous one and the last, to the east, consists of the sections NGC 6992 (C 33) and NGC 6995 (to which is added IC 1340), oriented in mirror image than the other two . This part is also known as the Network Nebula ( English Network).
It is thought that within a few millennia, this "wonder" del cielo boreale scomparirà, perché ad una grande velocità di espansione corrisponde pure un elevato indice di dispersione della sua materia, che presto esaurirà la sua energia ricevuta durante l'esplosione, e si disperderà nel mezzo interstellare, "quasi" senza lasciare traccia.
17 ligth x 300 secondi a 800 ISO per un totale di un'ora e 25 minuti di posa, 15 dark, dark and 7 of 15 flat flat: the individual images have been added with IRIS and then processed with PhotoShop CS
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