keogram (12. 179)

Via the always data-driven Quantum of Sollazzo newsletter, we are referred to another incredible bit of astronomical imagery from star-gazer Cees Bassa, a professional astronomer working for ASTRON, the Dutch institute for radio astronomy, presenting their all-sky image above the Netherlands, a composition of nighttime photos taken at fifteen second intervals that illustrates the lengthening and shortening of the days, weather and phases of the Moon. Their fourth annual almanac, the title term, from the Inuit word keoeeit (ᑭᐅᐱᑦ) for aurora, originally applied to a method for graphing the intensity of the Northern Lights and is in broader use as a way of documenting the changing night sky in narrow bands for the entire hemisphere. Much more at the links above.