NGC 602 is composed of an emission nebula and a young, bright open cluster of stars that is an outlying component on the eastern edge of the Small Magellanic Cloud, a satellite galaxy to the Milky Way.
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A "'planetary nebula "'is an emission nebula consisting of an expanding glowing shell of giant planets when viewed through small optical telescopes, and is otherwise unrelated to the planets of the solar system.
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A "'planetary nebula "', often abbreviated as PN or plural PNe, is a kind of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from old red giant stars late in their lives.
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This image manipulation could be done with GIMP ( which I have noticed the Jet Propulsion Laboratories in Pasadena have used ) or Photoshop, etc . This web page explains in plain language, the technical bits about what needs to be recorded . Cameras and H-a Emission Nebulas.
