I couldn't decide whether to put this question here or on the observatory forum. I decided to come here for the higher number of viewers and opinions. This concerns people outside of the observatory structure.
I am helping a nearby public observatory rebrand themselves not only as a place for locals to stargaze but as a destination for traveling scope owners. We are looking at adding a few cement pads with 120-volt outdoor outlets to accommodate visitors' scopes. How far apart would be ideal (and within reason)? There will probably be 4 pads in a straight line.