Stern is also a Starnese word although it's pronounced almost similar to the German variant. (and the S isn't patalo alveolear in the Starnese version) In Bluenese, The S at the beginning is actually used with an acute, and the digraph 'Er' is often pronounced /ə:/ elsewhere, but at the beginning of words, it's pronounced /ɛr/.
Credits: IPA and everyone. Note: Some of the words of Starland are often similar to the German ones.