NGC 6884 is a small and bright planetary nebuale in Cygnus, its dimensions and its luminosity surface make this object very compact and bright; very bright in OIII filter. to the telescope it doesn't show remarkable details, the shape is a uniform with sharp edges. Amateur images must be perform with high focals because nebula small dimension; it is visible with anular shape, the ring is few uniform and inside there are bright condensations.
The Hubble Space Telescope exploration have shown a complex situation: in the NGC 6884 has been subject to a precessisonal motion during ejection fase with a spiral collimate flux. To inside it is visible the hot-bubble nebula with tracks of an equatorial torus, while out nodular compact structures in [N II] with spiral disposition
Interesting level : **** |
