IC405 Flaming Star Nebula - Auriga

M27 - Planetary Nebula in Vumpecula

  1. © Copyright 2014 by Lieven Persoons

M27 in Vulpecula, also know as the Dumbell nebula or Apple Core nebula.
RK 19h 19’ 36” / DEC +22° 43’ 00”
8’ x 4’ / Distance : 486Lj / Vis m : 7.60 / Abs m : 1.73

This object was the first planetary nebula to be discovered; by Charles Messier in 1764. The Dumbbell Nebula appears to be shaped like an prolate spheroid and is viewed from our perspective along the plane of its equator. In 1992, Moreno-Corral et al. computed that its rate of expansion in the plane of the sky was no more than 2″.3 per century. From this, an upper limit to the age of 14,600 yr may be determined. In 1970, Bohuski, Smith, and Weedman found an expansion velocity of 31 km/s. Given its semi-minor axis radius of 1.01 ly, this implies that the kinematic age of the nebula is some 9,800 years. The central star, a white dwarf, is estimated to have a radius which is 0.055 ± 0.02 Ro which gives it a size larger than any other known white dwarf. The central star mass was estimated in 1999 by Napiwotzki to be 0.56 ± 0.01

General Info

Image Data

Optics : TMB 152 @ f/8
Mount : 10micron GM2000
Camera : SBig STL11000
Exposures : total, 9h00 - LRGB : 160:130:130:80 (1x1 bin)
Filters : Lumicon HaRGB 2”
Location : Nieuwerkerken (Belgium) an Verclause (France)
Date : 8, 19, 20/07/2010, 2/08/2010, 2/09/2010
Comments : A lot of lightpollution @ Nieuwerkerken (Belgium)

 
Nebulaetmb_nebulae.htmlshapeimage_5_link_0
Nebulaetmb_nebulae.htmlshapeimage_7_link_0
Recentrecent.htmlshapeimage_8_link_0

Size :

Cygnus

Vulpecula

Delphinus