High and Low Altitude Halo ~ Alec Jones (Bolton Halo Triangle) and the Bolton School Team captured this high altitude halo. Near simultanoeusly (lower right) they imaged the same from the ground. All images ©Alec Jones & Bolton School Team, shown with permission
The halo from the ground.
About - Submit Optics Picture of the Day Galleries Previous Next Today Subscribe to Features on RSS Feed


The team launched a high altitude helium balloon from Elseworth near Cambridge, England.

The balloon carried a high definition 4K GoPro camera and reached 108,000 feet (20.5 miles) before bursting. It landed near Thetford in nearby Norfolk.

The height of the balloon when the halo was imaged was not precisely known but can be judged from the appearance of the plentiful cumulus way below.

Alec's height for the image at right of the 22° halo and upper tangent arc - somewhat impeded by the same low cumulus - was near to zero. Cambrideshire and the Fens are flat!.

Right below is the flight video. Fasten your seat belt tightly!