18" Observatory Class Cave Nov 17, 2015 10:39:36 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by theater429 on Nov 17, 2015 10:39:36 GMT -5 Cave's 1974 catalog shows a picture of an 18" Observatory Class telescope. Does anyone know where they are installed or if any still exist?
