Condor reveals a second eruption shell of the dwarf nova
Z Cam is a cataclysmic variable star whose visual magnitude varies between 10 and 14. This system is the prototype
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Archives
A new outreach discussion forum
Just launched, AstroMailbox is a new astronomy communicators’ e-mail discussion list which brings together anyone interested in astronomy outreach. It
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The 2023–2024 western elongation of Venus: interim report
On 2023 Aug 13, Venus passed through inferior conjunction and returned to the morning skies, embarking on the 2023–’24 western
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Comet prospects for 2024
Long-period comet 2023 A3 (Tsuchinshan–ATLAS) promises to be bright. Halley-type 12P/Pons–Brooks makes a return and may reach 4th magnitude. Three
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Sky notes for 2023 December & 2024 January
The long nights of deep winter are dreaded by most but adored by astronomers. Clear, frosty, transparent evenings, with Orion
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A chronology of some lunar drawings by Galileo Galilei
By taking into consideration the morphological features along the terminator in some of Galileo’s watercolour portraits of the Moon, found
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Noctilucent cloud over Britain & Western Europe, 2022
Noctilucent cloud forms in the mesosphere at an altitude of about 83km and appears annually in northern latitudes between the
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Brightness variations in R CrA & NGC 6729 during 2021
An indicative luminance light curve for R CrA created from data collected during 2021 showed a brightness range between magnitudes
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Auroral & noctilucent cloud activity, 2023 June 19 – August 18
With coronal mass ejections and sunspot numbers regularly in triple figures, the odd X-class flare and several coronal holes, the
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Observers team up to study the enigmatic dwarf nova CG Draconis
It has been said that variable-star observing is a team sport. Even though observations are made by individuals, it is
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