I'm looking for the sans-serif typeface used in the star chart below.
I feel like I have seen it in other star charts and maps (it feels familiar, akin to Computer Modern in scientific papers) , but unfortunately I couldn't find a better scan, so the automatic identifiers (Matcherator, Whatthefont) failed. Identifont and "manual tag-based search" led me onto something DIN-like, but it's not quite there...