M 27 - THE DUMBEL NEBULA

Vulpecula

(ra: 19:59.6 / dec 22:43)

DATA

TYPE: Planetary Nebula

VISUAL BRIGHTNESS: 7.4

SIZE: 8 X 5.7 arcs minutes

DISTANCE: 1.25 k light years

OBJECT DESCRIPTION

M27 was the first ever discovered Planetary Nebula by Charles Messier in 1764. It also is the larger object of its type. The brigthtest part of this object spreads out in 6 acr minutes, aproximatelly 2.4 light years. The region is  iluminated by its central star, that shines at magnitude 13.5. The visible glow in the picture is generated as atoms are excited by the dying star's intense but invisible ultra violetstar. M27 is the type of Nebula our Sun will produce when nuclear fusion stops in its core.

IMAGE INFORMATION

SCOPE: Celestron C8 (SCT). Vixen GPDX. Sky Sensor 2000;

CAMERA SXV M7 @ f6.3 (roughly)

FILTERS: Astronomik Type II

EXPOSURES: LRGB (40,8,8,8) Subs 240 seconds

GUIDING: Synta 70/400 Refractor SXV Guide Head

IMAGE ADQUISITION AND CONTROLL: Astro Art and Control User 3.71 Interphase

SKY CONDITIONS: visual magnitud 4. Seeing and Transparency Poor / Clouds comming in

CALIBRATED: (darks flats bias) Images Plus. Process in PhotoShop CS