Basis geographiæ recentioris astronomica in qua situs locorum insigniorum geographici ea exactitudine, qua celeberrimi astronomi eosdem per observationes è plurimis luminarium et circumjovialium eclipsibus nobis hactenus suppeditarunt pro certiori geographiæ stabilimento positi designantur
Version 3 can be requested by using "Content Negotiation" as described in IIIF API Version Switching