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When Roses Aren’t Red March 24, 2006

Posted by jtintle in APoD, Deep Space, Hubble Telescope, NASA, Space, Space Fotos.
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See Explanation.  Clicking on the picture will download the highest resolution version available.
Credit & Copyright: Jay Ballauer (All About Astro, 3RF)

Explanation: Not all roses are red of course, but they can still be very pretty. Likewise, the beautiful Rosette Nebula and other star forming regions are often shown in astronomical images with a predominately red hue – in part because the dominant emission in the nebula is from hydrogen atoms. Hydrogen’s strongest optical emission line, known as H-alpha, is in the red region of the spectrum, but the beauty of an emission nebula need not be appreciated in red light alone. Other atoms in the nebula are also excited by energetic starlight and produce narrow emission lines as well. In this gorgeous view of the Rosette’s central regions, narrow band images are combined to show emission from sulfur atoms in red, hydrogen in blue, and oxygen in green. In fact, the scheme of mapping these narrow atomic emission lines into broader colors is adopted in many Hubble images of stellar nurseries. This image spans about 50 light-years in the constellation Monoceros, at the 3,000 light-year estimated distance of the Rosette Nebula.

Comments

1. fleta - May 24, 2006

Nice site. Thank to work…

2. heathley - May 26, 2006

Great job guys…

3. giselmaere - May 27, 2006

perfect site good information, very nice news and etc… tnx


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