Observer’s Challenges – British Astronomical Association

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Figure 1. WinJupos predicted position of Iapetus in transit at 2022 July 18 at 02:00 UT. (North upwards).

Observer’s Challenge – The Transit of Saturn’s Satellite Iapetus on 2022 July 17/18
2022 Jul 11
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2022 May 6
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Artist impression of the James Webb Space Telescope. Courtesy of NASA

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Observer’s Challenge – Mercury at Maximum Elongation
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Observer’s Challenge: The Moon’s encounter with Ceres
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Daryl Dobbs

Observer’s Challenge – The Moon’s Tour past the Planets in Early January
2021 Dec 31
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Observer’s Challenge – The Moons of Uranus
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Observer’s Challenge – November’s Tricky Partial Lunar Eclipse
2021 Nov 15
Pete Lawrence

Observer’s Challenge – September’s Thin Moon
2021 Sep 4
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Observer’s Challenge – Five outer planets in one night
2021 Jul 19
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Observer’s Challenge – The Eclipses of Algol
2021 Jan 6
Tracie Louise Heywood

Observer’s Challenge – Jupiter/Saturn Conjunction
2020 Dec 3
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