CCD image taken with a ST-9E CCD camera thru Kopernik’s 20 inch F/8.1 telescope. The exposure was 10 minutes, plus 15 minutes of color data. The field of view is approximately 8x8 arc minutes, with North at the top.
NGC 6818 (Pk 25-7.1) is a Planetary Nebula in the Constellation of Sagittarius. It is sometimes called "The Little Gem". The teal blue/green color comes from the doubly ionized Oxygen (O-III) that it contains.
Planetary Nebulae: To learn more about them, click here.
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George Normandin, KAS
September 14th, 2004