>>3586614Your image appears to be a scan from a book. At the resolution you have you could do 15" on the long side if you want to follow the usual printing rules. You could probably get away with 18". However the text will look bad no matter what because you'll be enlarging it from a print rather than the original file.
>>3586699This anon is correct. The image is copyrighted and creating a print of it is illegal. However like with most copyright infringements the chances of getting caught are quite low.
You could instead spend about the same amount on the original book as it would cost to a get a decent print and a decent poster frame. The book it is from is Star Trek Star Charts: The Complete Atlas of Star Trek available on amazon for ~30$
You could also get Star Trek: Stellar Cartography: The Starfleet Reference Library Maps from the Star Trek Universe which seems to have similar maps but is a little larger and in hardcover. It's cheaper at $25 and on prime so no shipping if you have a prime account.
