I recently took a few night shots of the Milky Way, but found that I kept getting this weird vertical glare and I don't know why. The below image shows it exaggerated by lights in the distance as well. Any help would be much appreciated.
Update: I finally got to take a look at my lens and here's what I found:
That is probably the culprit. Bummer I won't get a chance to shoot the Milky Way agin soon. I'd really like to get that shot.
Thanks for the help!