[i]Just in case this is super old news, which is possible as I've just stumbled onto Bnet since this Destiny ARG has started, I tried searching for this information first, but couldn't find anything that discussed this already being found. Plus, on Misriah Solutions, it is stated as being unknown.[/i]
Anywho, don't jump on me if it's common knowledge, but Alpha Lupi's unique avatar is the mathematical symbol for Fourier transform pairs. It is essentailly like "=", but it means "_____ is the Fourier transform pair of _____." Thought I'd share that in case it wasn't known. Based on the fact that the transform has been used to clear up these pictures, it probably is known, but who knows.
Fun fact: A simple [url=https://www.google.com/search?hl=en&site=imghp&tbm=isch&source=hp&biw=1440&bih=799&q=fourier+transform+symbol&oq=fourier+transform+symbol&gs_l=img.3..0i24l6.680.3076.0.3275.24.12.0.11.11.0.149.958.8j4.12.0...0.0...1ac.1.2.img.zUh-6aypEnA]google images search[/url] turns up a result that looks spot on to the avatar, and may be what was used to produce the symbol in the avatar's making.