Running stars on the Princeton, a mecca of astrophysics

During my postdoctoral period here, I'm considering of conducting a project called "Running stars on the Princeton, a mecca of astrophysics." (Honestly, I really like and agree with the catchphrase Prof. Woong said.) Final goal of this project will have a personal photo exhibition consisting of star trails with buildings in the Princeton University as well as IAS. (If I can't take enough pictures, I will be able to present some of them in AAA exhibition.)

I just naively thought about that when I was walking around the campus in the night. Write this here to remind me. I need to buy a good camera (Canon 5D make II or III) and lenses (thinking of 24mm focal length with F-ratio less than 2.8). I may need them before comet ISON coming, meaning that I should buy them no later than November. See you in the near future, Obssesion.