Select permissions on System tables

I created a view as:

CREATE OR REPLACE VIEW caviar_schemas AS
SELECT n.oid::integer AS schema_id,
n.nspname::information_schema.sql_identifier::text AS schema_name
FROM pg_namespace n, pg_authid u
WHERE n.nspowner = u.oid AND pg_has_role(n.nspowner, 'MEMBER'::text)
AND u.rolname::information_schema.sql_identifier::text <>
'postgres'::text
ORDER BY n.nspname::information_schema.sql_identifier::text;

I then granted Select permissions on both the view and underlying
tables to public. When I select form the table as a non super user I
get no error, but no rows. Super users select from the view and
underlying tables fine. How can I give select only permissions to this
view to non super users?

Thanks