On motsai shabbos we make havdala and also make a b'rocho borai morai hoeish on what is called today the havdala. If one does not have one and no means of making a 'light' can one make the b'rocho on the stars? This question has to do with psochim 2a where is it discussed if the light of stars is called 'ohr'.
Rokeach at the end of 356 - in this linked edition it is on page 242 line 5 says that if one is travelling he can stretch out his hands to the light of the stars and say Borai Meorai Haeish. He does not say anything regarding Shem U'Malchus.
However the Raviya Brachos clearly says he should say it with Shem U'Malchus.
ואם היה בדרך פושט ידיו לאור הכוכבים שהם של אש ואומר בא״י אמ״ה בורא מאורי האש