PLANETARY NEBULA IN AQUILA
(ra: 19,18.4 / dec 06:33)
October 2012, - Camping La Porteņa, Areco, Buenos Aires - Argentina
TYPE: Planetary Nebula
VISUAL BRIGHTNESS: 11.8
APPARENT DIAMETER: 1.9 arc seconds
DISTANCE: 2500 lights years
SCOPE: ORION OPTICS UK 6" f5 Newtonian
CAMERA: QSI 583 WS
GUIDING: LodeStar in Synta 70/400 refractor / PHD Guiding
FILTERS: Baader LRGB Set
SKY CONDITIONS: Rural Skies.
EXPOSURES: LRGB (30,20,20,20)
PROCESSING: Images Plus / Photoshop CS2
OBJECT DESCRIPTION AND IMAGE SESSION
NGC 6781 is a fine planetary nebula and a bright object. The Nebula presents a almost perfect bubble of gas emitted by a single sun like star that died some time ago. The nebula we see is the ejected surface of the star expanding into material left from an earlier stage. At 16.8 magnitude, the central star (a white dwarf) was is visible in the High Resolution Image.
I started imaging while the object was already into the west, therefore very short exposure time was used to get the complete LRGB set.