Observer’s Challenge – M81 and M82
Stewart sets us a challenge to observe M81 and M82
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Atmospheric Refraction
David discusses the way light is bent in the atmosphere.
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Observer’s Challenge – Mercury at greatest eastern elongation
The orbit of planet Mercury’s lies closer to the Sun than the Earth is, meaning that it always appears close
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The Barlow lens
A close look at the workings of this popular accessory.
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Early morning total eclipse of the Moon this Monday
John Mason describes the coming lunar eclipse
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Star Count 2019
We have been joined by the Campaign to Protect Rural England for Star Count 2019. This cosmic census that will help
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Enhancements to the BAA Photometry Database
Introduction of exoplanet and asteroid photometry, and recalculation of historic observations.
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Observer’s Challenge – Sirius and the Pup
Try the challenge to image or draw Sirius’ faithful companion, the Pup
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What is the best telescope for an adult beginner?
Continuing my theme from a previous article ‘What telescope should I give a child?’, in this article I will be looking
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Observing asteroid occultations with digital cameras
Tim provides an introduction to this interesting form of observing.
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