Greg, I use an Intel NUC connected to the telescope and camera, and control it over wifi from my laptop/tablet. Several benefits to this approach:
- they’re relatively inexpensive
- they run off 12v for use at a dark site
- small and easy to cover up to avoid dew
- wifi control allows you to stay inside away from the elements/wildlife
For DSO imaging, you don’t need a high-spec model...mine has a quad core Atom chip which even running Windows 10 is sufficient to run EQMod for mount control, PHD2 guiding and image capture software without breaking a sweat.