M57 - The Ring Nebula

M57 - The Ring Nebula

The Ring Nebula  (NGC6720, M57) is a planetary nebula in the constellation Lyra.  It is the result of a star (visible in the center of the ring) which ejected its outer shell of gas into surrounding space.  It is located at a distance of approximately 2300 light years and the ring itself is approximately 1/2 light year across.  More information about this object can be found at Wikipedia-Ring Nebula and at the Messier Database - M57.  

Also visible in this image at the lower left is a faint 14.8 magnitude spiral galaxy, UGC11374 (IC1296).  This image is from 220 minutes of exposure through a William Optics FLT110 4.3" f/7 refractor taken on 5 and 6 September 2010 using LRGB filters.

The full widefield version of this image is shown below.

M57 - The Ring Nebula

The below image was an early image that I took in 1999 using a 16" f/4.5 Starfinder Newtonian reflector telescope and a homebuilt "Cookbook" CCD camera. This is a WCMY composite of 35, fifteen-second exposures with no filter from 12 June 1999 along with cyan (29x15sec), magenta (21x15sec), and yellow (15x15sec) filtered exposures from 12 September 1999.  

M57 - The Ring Nebula

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