The resolution of the Diaspora text logo on the makeshift website is quite small, and not suitable for printing.
That logo is currently being recreated by the teams graphics artist, but is not yet available.
If you are looking for the Colonial logo on the golden roundel, that can be found online.
Since you have imagery of the Battlestar Galactica in your project already, perhaps the BSG logo would be better?
Google 'Battlestar Galactica logo' and select 'large' under images > tools > size.
Add the keyword 'vector' and you'll find some that are much more suitable for printing.
Vector art can be scaled to whatever size you need without quality loss/pixelation.