Thanks! It was a 24-70mm f/2.8 at ISO 400 and 15 seconds on a T2i. First one's f/2.8 66mm (105.6mm equiv. o.o) and second one's f/6.3 25mm (40mm equiv.).
My framing was limited due to me living in between two floors and a big dumpster getting in the shot if I went any wider. No one likes a dumpster in front of a starry night sky.
If I could, I'd choose the 18-55mm kit lens for the wide angle.
I do have one question. I used manual focus and the distance scale to focus to infinity, but I don't know how accurate the scale is. Is this the right thing to do?