We don't have synonyms for megascope yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are megascopic, metascope and megaspore.
(n) :
A modification of the magic lantern, used especially for throwing a magnified image of an opaque object on a screen, solar or artificial light being used.
(n) :
A modification of the magic lantern, used especially for throwing a magnified image of an opaque object on a screen, solar or artificial light being used.