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David Frydman

David Frydman has been a keen observer for many years of all things astronomical and of atmospheric phenomena. In recent years he has observed mainly with binoculars and small telescopes. He has a special interest in optical instruments, having tested and used many hundred binoculars, telescopes and lenses.
Ian Ridpath

Ian Ridpath is a full-time writer, broadcaster and lecturer on astronomy. He is a Fellow of the Royal Astronomical Society and a member of the Association of British Science Writers. A former editor of Popular Astronomy, he is a regular contributor to Astronomy Now. Ian Ridpath's many books include Collins Guide to Stars and Planets, Gem Stars and The Monthly Sky Guide. He is also the editor of the highly respected Norton's Star Atlas - a must-have publication for most practical astronomers - and the Oxford Dictionary of Astronomy.
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