Hi, I have a few questions regarding star trails... I’m planning on doing a star trail using a local church that’s lit up till 11pm at night as the foreground. I’m going to go for a dry, cloudless night when the moon’s not out, set my gear up and take a few shots with the church in focus when it’s still lit up. Then, after lights out on the church, I’ll amend the focus to infinity to start shooting the stars. I plan to leave it going for a couple of hours in order to get some length on the trails. Questions: Having the church lit up and in focus for the first few shots, when I blend the photos