# Missing line in solar spectrum

Referring to this answer to What's the rationale behind the false colours in solar observation photographs? which includes the table from Wikipedia's Fraunhofer lines:

In the Table of wavelengths there is an e designated Hg line of 546.07 nm which DOES NOT appear in the picture of the Fraunhofer spectrum, any explanation? Also there are about a dozen lines in the spectrum which are not tabulated and not identified at all.

• i.stack.imgur.com/oEcmv.png They are really small but just to the right of the big "G" I think I see "f" then "e" but interestingly, "e" is listed at both 438.355 and 546.073 hmm... – uhoh Nov 12 '20 at 3:51
• +1 for asking what turns out to be a very interesting question! – uhoh Nov 12 '20 at 22:56