Just picked up my tri-pod from currys so cant wait to do so timelapse stuff.....think i will try it out at my back door first to get some settings dialled in for when im off to kirk Yetholm in Scotland on the 9th.....it's a converted barn in the middle of nowhere.....at night it's so dark you cant see your hand in front of your face, so star timelapse should work a treat......gonna leave it taken pics every 5 seconds for a few hours and see what i get.......do i have the iso at the highest to let more light?.....or do i need to change the aperture to stay open more to let more light in?......is that what iso does?