Supporting amateur astronomers since 1890
In July 2015 Ricardo Hueso Alonso and colleagues discovered a bright spot on Neptune at latitude −41° with the 2.2 metre telescope of the Calar Alto Observatory. This paper reports observations and monitoring of this feature by amateur observers in the Netherlands and shows that with current amateur telescopes and digital cameras, bright features on distant Neptune can be detected and analysed.
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The track of the total solar eclipse of 2017 Aug 21 begins at sunrise at 16:49UT in the Pacific Ocean
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Introduction Almost all telescopes today come with a set of optical filters. These are small brightly coloured disks of material
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Venus was well placed by the start of 2017, and is being enthusiastically followed. This brief summary goes up to
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The recent evening elongation of Venus has attracted much public attention. I lost count of the number of times that
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