Wayne Geiser
Google
It can be very difficult to get tickets. Although the tickets are free, they "sell out" very quickly. It took a number of tries to get tickets and we had one week that they canceled due to clouds.
They had three small telescopes set up on the roof, each pointing at a different object with volunteers to answer any questions you might have.
Being in the city, the selection of objects to look at is smaller than if they were under darker skies, but it was a fun evening!
Parking can be a bit of a problem in the area unless you have a BU parking sticker.