IC405 Flaming Star Nebula - Auriga

M57 - Planetary nebula in Lyra

  1. © Copyright 2014 by Lieven Persoons

Image Data

Optics : TMB 152 @ f/8
Mount : 10micron GM2000
Camera : SBig STL11000
Exposures : total, 13h30 - HaLRGB : 520:210:30:20:30 (1x1 bin)
Filters : Lumicon HaRGB 2”
Location : Nieuwerkerken-Aalst (Belgium)
Date : 17, 19/04/2011 & 17 ,25/05/2011 & 2 ,8, 11/06/2011 & 3/07/2011
Comments : Ha only for outer 2 rings in nebula. A lot of lightpollution @ Aalst


M57 in Lyra, Ring Nebula also know as NGC6720.
RK 18h 53’ 48” / DEC +33° 02’ 00”
1.38’ x 0.89‘ / Vis m9.3 / Abs m: 1.14
Distance: 1.400.000Lj / diam: 0.90Lj

Messier 57 is located south of the bright star Vega, which forms the northwestern vertex of the Summer Triangle asterism. It is a prominent example of a planetary nebula. This is a shell of ionized gas expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf. The material of the Ring is exposing a decreasing ionization level with increasing distance from the 100,000 to 120,000 K hot central star. The innermost region appears dark as it emits merely UV radiation, while in the inner visible ring, greenish forbidden light of ionized oxygen and nitrogen dominates the color, and in the outer region, only the red light of hydrogen can be excited.
In the NW just beside M57 lies IC1296 a spiral galaxie, size 1.10’ x 0.80’ / Vis m14.3

General Info




Size :