astronomy photos

Holding Due North

Jake Mosher (USA). A weathered juniper tree in Montana’s northern Rocky Mountains is filled with arced star trails and in the centre sits Polaris, the brightest star in the constellation of Ursa Minor. It took several test frames of long exposures to make sure that Polaris was in the right position, but eventually things lined up and the Moon provided enough light to the foreground, yet plenty of dark skies to allow a high enough ISO to capture lots of stars.

Photograph: Jake Mosher/National Maritime Museum Guardian photo array