Thread: Just another face in the crowd ... Finished my Eta
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  #51  
Old 06-04-2012, 04:55 PM
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Peter Ward
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Peter Ward is offline 		 
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Quote:
Originally Posted by alpal View Post
............

as we can't see Ha anyway.
Beg to Differ.

It's exactly the same wavelength as viewed through countless (H-alpha) solar telescopes. Easy to see...(and very red ).
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