Back ] Up ] Next ]

M 57 - NGC 6720 - Ring Nebula
Penryn, California
June 2007
M 250 @ f 9.3  (unguided)
ST-10XME LRGB 30 second subs

The "classic planetary".   Messier added M57 to his list in 1779.  M57 is located at a distance of 1500 ly.  The central star has a surface temperature of 100,000 degrees K and is thousands of times denser than the sun.

Image acquired during a full moon.