Estimating the Coma Size and Brightness of Comets (Part 1: Visual)
The written content here was authored by Jonathan Shanklin and originally published in the Association’s Comet Observing Guide. Minor amendments
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Author: David Swan
Exoplanet Transit Imaging and Analysis
Mark Salisbury details how to acquire, analyse and publish data on exoplanet transits
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Drawing the Planets: some tips and anecdotes
Richard McKim shares tips and anecdotes on sketching the planets
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Getting started in the history of astronomy
Mike writes about how to start research into the history of astronomy
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Determining the Quality Number of a Sunspot Group
Lyn explains how to categorise sunspot groups according to their quality
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Introduction to VLF observations of solar activity
John Cook, the Radio Astronomy section director, writes about how to detect the effect of the sun on the Earth’s ionosphere
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The transit of Mercury: how to observe it
How to observe the November 2019 Mercury transit
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Imaging comets: an introduction
A brief history of comet imaging and some of the fundamentals of current imaging technology
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An introduction to variable star observing
Roger Pickard writes about why and how you should observe variable stars
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Observing the outbursting comet 29P/Schwassmann-Wachmann
Richard Miles explains how to measure the brightness of the unusual comet 29P
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