Could someone help with making this league image a background?

It is not one of the backgrounds that you simply click to get. It is the one that you first see when loading the site ( http://na.leagueoflegends.com/en/featured/skins/star-guardian-2016 ), where it has the cosmic pattern on Lux, that says,

                     S T A R
               G U A R D I A N

I can't get the actual full image since they all act as separate ones, but here are a few of the things on the image:

https://lolstatic-a.akamaihd.net/frontpage/apps/prod/star_guardian-2016/en_US/8ea34a48d32b8dd593dd712d967ec8e5fa6f112d/assets/images/SG_Logo_Silouette.png

https://lolstatic-a.akamaihd.net/frontpage/apps/prod/star_guardian-2016/en_US/8ea34a48d32b8dd593dd712d967ec8e5fa6f112d/assets/images/commet_star_guardians.png

If you are able to get the image to 1440x900, I'd be extremely grateful, but 1600x900 would work too.