Chulpan means "morning star" in Tatar.
I found this meaning on the following pages about Turk deities:
http://www.ethnikoi.org/tengrianism.htm
I tried to confirm this and found a page in Russian about the mentioned Tatar actress that explains her name as "morning star" right in the first sentence:
http://www.rusactors.ru/h/hamatova/index.shtml"Чулпан" по-татарски значит "утренняя звезда"
Rene