Kevin Drum @Deirdre Thanks! =) The sky is basically a 15-second exposure at ISO 1600, but I took six of those exposures and stacked them for noise reduction (see youtu.be/Rydg7JGTAbw). For the overpass itself, I also took a 30-second exposure at ISO 200, and used my cellphone's flash to paint light on it. The sky and the foreground were then "exposure blended" using Photoshop. This was my second night of trying astrophotography, so I'm still new at it. Lonelyspeck.com has a lot of great info.
Łukasz Nice! I will definitely try that! ;)
Jesse Lind This is amazing!
Kevin Drum Thanks @Jesse :D
Osvaldo Pontes great job!
Aleksander Dębowski Wow. Wonderful picture.
Deirdre Really nice. How you do that?