Request to professional mariners

Hi, all professional mariners.
My name is Nguyen Ba Quang from Vietnam country i am the last year student pursuing nautical navigation. i am doing thesis for my graduation condition. i’ve been getting some troubles at the first step. my thesis is to present all methods to build a star sky for navigation and comparing them of the accuracy. any mariner knows about it please guide it to me immediately or have materials talking about it, please sending them to my email: or post links on this topic.
looking forward your reply. thanks in advanced.
have a good day :slight_smile: all.