|24-70mm @ 24mm, f/2.8, ISO 800, 30 second exposure|
I didn't have a cable release so I couldn't reliable shoot longer than 30-second exposures (max on my D90). I boosted up the ISO to 800 and shot wide open, but in retrospect, I should have experimented with boosting up the ISO even more. A few of the meteor pictures I saw on the internet actually had higher ISOs than what I was using. I guess since there isn't any shadow detail, concern about noise in the black isn't a big deal.
The reason I now feel that I ought to boost up the ISO is that the meteors I saw weren't much brighter than the stars around them, but were only exposed on the camera for a fraction of a second, compared to the 30 seconds that the stars got. So I think a higher ISO would result in a brighter meteor. Oh well, maybe next time.