The title says it all.
Maybe un wise.
The airport has a few hidden spots that have aircraft the military would not like you having noculars on .
Be ware .
Just a heads up.
I agree with diva, you might attract unwanted attention if you are hanging around a Cuban airport with binoculars, and besides, it would be a waste of time. Santa Clara isn't particularly busy. You would have to know the schedule to be there when there was any action at all.
On the way to Topes de Collantes we passed by a small airfield with Cuban military jets parked. I think we were advised not to take pictures. But my memory fades