|Planetary Nebula NGC 246 & Galaxy NGC 255
NGC 246 is a dim planetary nebula in the constellation Cetus the whale, at a distance of 1,800 light-years. Although it is much larger
than other better known planetary nebula such as the Ring Nebula, it is low in the sky for northern observers, and relatively dim, so it
gets much less attention. Like other planetary nebula, NGC 246 is a dying star that has shed its outer layers, of green oxygen and red
hydrogen, illuminated by the glowing white-hot ember of its fading central star.
Through the camera, NGC 246 contrasts with the far more distant barred spiral galaxy NGC 255 on the right, located a whopping
70,000,000 light-years away. This nebula has recently been catalogued as Caldwell 56.
This image combined 85 minutes luminance exposures using the IDAS filter with 20 minutes of green and red and 30 minutes of blue
exposures. An ST10XME camera was used through a TEC 140mm refractor.
Music: Green-Eyed Lady, by Sugarloaf
Green-eyed lady, ocean lady, Soothing every ragin' wave that comes
Green-eyed lady, passions' lady, Dressed in love, She lives for life to be
Green-eyed lady feels life I never see
Setting suns and lonely lovers free.