Hi Rob, I live in the cbd so I will have to travel out some distance to get away from the city lights. I'm not sure what most people do, but I figured I would end up heading up the mountains or maybe park off the side of a highway and set up there - and didn't want to kill the car battery. That's why I thought something that would last maybe a few hours would be fine. Don't see myself sitting out there the whole night and I wouldn't want to leave my gear out on its own anyway. I think I'd be pretty happy to have something that lasted 4 hours safely - lets say 30 minutes of me stuffing around setting up and then 2-3 hours for imaging.
WHat is the 240V supply that you use? a step down transformer?
Cheers.
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