In my milky way shot here, I was 50 miles from Denver, in a blue zone, and I still had considerable problems with the metro area light bubble over the horizon (note, this image is heavily processed, original below): On this map, blue and green are acceptable for night sky photography, but still prone to issues with light pollution. As an example, almost the entire eastern half of the United States is riddled with light pollution, as can be seen by this view of Dark Sky Finder. This can often be difficult, especially in densely populated areas. Second, find the darkest skies you possibly can.
If you are using ISO 100, 200, or 400, your too low (unless you are also using an f/1.4 or faster lens, and even then, I would still recommend using ISO 1600 at least!) I own a Canon 7D, not particularly great at high ISO, and I usually use ISO 16 for my night skies. There are a few things you can do to increase the brightness of your night sky shots.įirst and foremost, don't be afraid to push ISO. This is more true for cameras with smaller sensors than for cameras with larger sensors, but in general, even if you shoot the night sky at ISO 3200, you are going to need to boost exposure to get one of those nice, bright single-frame Milky Way shots. The vast majority of night sky photos have been boosted in post to achieve their brightness.
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