Hi guys

So I'm playing a game of Stellaris on a 4-arm spiral galaxy and I want to create a star map of the galaxy and my civilisation and I'm having trouble about how to map the galaxy and the positioning of the various systems

Does anyone have any tips or ideas on how to get this started? I'm planning to use GIMP to edit it all. I'm looking to get the current star map in stellaris (without any empires or anything, just the systems/stars) into GIMP so I can create all the civilisations etc onto it

Thank you!