The Royal Observatory, Greenwich is the home of Greenwich Mean Time and the Prime Meridian of the World, making it the official starting point for each new day and year. It is also home to London's only planetarium, the Harrison timekeepers and the UK's largest refracting telescope. It runs the annual Astronomy Photographer of the Year exhibition.
French provides a practical introduction and the necessary tools required to access and understand a multitude of high-resolution solar observations […], and how to safely observe the Sun from the comfort of your own home. Dr. Stephanie Yardley, BBC Sky at Night Magazine