Hi Mike,
1. Am I correct that my PI license allows me to install it on a Linux computer as and on my Win 8.1 box? Only one will be used at a time.
Yes, absolutely. And you can use both at the same time. Actually, our license agreement allows you to install and use PixInsight on any machine you own, on any supported operating system.
2. Will PI work under Linux's KDE and Gnome GUIs? Is one preferred over the other?
My recommendation is
Kubuntu 18.04 LTS. This is the operating system we use on all of our development workstations. GNOME also works well, but KDE provides a much better integration of bundled PixInsight projects.
Saying this is probably unnecessary, but I also recommend:
- Depending on the amount of money you want to invest in the new Linux box, one of the latest AMD Ryzen Threadripper (third generation) or AMD Ryzen 9 processors. See the
benchmark for comparisons.
- Not less than 32 GB of RAM. The more the much better.
- Fast SSD disks.
You're about to experience the performance and stability of Linux. Warning: it is addictive