Since the renovations, they now require reservations for entry. Check their website for details.

I’m not a museum person, but I did like the planetarium show because it was like an imax show. It was awesome.

Go watch the show at the Leonard Nemoy Event horizon before you go check out the place. The show there gives you an overview and a background on everything at the observatory.

Eat before you get up there. There is a cafe at the place, but it doesn’t really have a big variety of stuff (most of the stuff is snacks) and it is kind of pricey for what it sells.