Peter,
That should be Raspbian.
The Raspberry Pi 2 is powerfull enough to run PHD2 and INDI software, the 3 and 3+ are even more powerfull. Neither of these is available without compiling the software yourself so unless you are capable someone will need to assist you. Although not a trivial exercise the you can set up VNC to remotely control your equipment.
An alternative for INDI is to buy a version already set up.
https://www.stellarmate.com/
Paul