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  • 21 Aug, 2019

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File:Ab30 Rgb1.jpg
Red=Hydrogen alpha;

Green=[O III] 5007;

Blue=6100 Angstrom continuum (just shows the stars).

Stars look "white" because they show up in all three filters. (Logarithmic scaling.)
Source http://violet.pha.jhu.edu/~wpb/abell30/ab30.html http://violet.pha.jhu.edu/~wpb/abell30/ab30_rgb1.jpg Author William P. Blair Permission
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current23:15, 28 September 2013Thumbnail for version as of 23:15, 28 September 2013796 × 796 (804 KB)Fabian RRRR{{Information |Description ={{en|1='''Abell 30''' at the prime focus of the 4-meter Mayall telescope at Kitt Peak National Observatory: Red=Hydrogen alpha; Green=[O III] 5007; Blue=6100 Angstrom continuum (just shows the stars). Stars look "...

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