I was trying to experiment with some bulb exposures, but I got nowhere fast when I realized I didn't own a remote (D80/N75). I was thinking of getting one, but I notice the setting in the D80 menu stating how long it remains responsive to the remote. 15 minutes is the maximum. What if I wanted to make an hour long bulb exposure using the remote? Would the remote still be able to close the shutter after 15 minutes? The N75 and D80 work with the same remote, so I assume they'd work the same in this respect.