-Processor:i5 or i7
-Ram: 8 go minimum
-Graphic Card Memory: DDR5 3GB minimum. 
Hard-drive: 500GB recommended but in most cases even 120GB may suffice.  The SSD drives are an even better choice for speed and shock resistance.
-Linux system only. We recommend using this machine only for the planetarium. 
Installing Windows or whatever in bi-boot would be possibly but not recommended as it's better to have the machine booting directly to our concern. Calculations and preprocessing of video has to be done with an other machine.
-NVIDIA GeForce 1060 or greater. ATI not recommended as a lot of worries encountered with Spacecrafter. 
- Shuttle or Barebone is a good choice for easier transportation. 

REMARK1: Notebooks are not recommended, mostly because of the inadapted graphic cards. Some exceptions are possible. But you have to put the LCD panel off because it produces too much light pollution spreading on the dome.