Mostly the sky does the work, but here's what else is on.
Weekends, weather allowing — whoever's about pulls a chair up. Bring your own marshmallows.
A shelf of them in the barn, help yourself and put them back when you're done.
Occasional evenings run by a guest astronomer from the local society — dates go up on the noticeboard a week ahead.
Laminated charts for the season and a red-light torch that won't wreck your night vision, free to borrow.