TAILIEUCHUNG - Real Astronomy with Small Telescopes

in sunlight. This resulted in the development of a wide variety of sophisticated and elegant sundials, which became the standard timekeepers. Sundials were also used as reference for other modes of time-keeping such as hourglasses. Time kept by this method is called apparent solar time. The time between successive appearances of the Sun at the local meridian defines the apparent solar day. Because of Earth’s elliptical orbit, the angular distance it covers per day varies. It moves more rapidly in winter when it approaches perihelion than in summer when it’s near aphelion | Patrick Moore s Practical Astronomy Series Other Titles in this Series Telescopes and Techniques 2nd Edn. Chris Kitchin The Art and Science of CCD Astronomy David Ratledge Ed. The Observer s Year 2nd Edn. Patrick Moore Seeing Stars Chris Kitchin and Robert W. Forrest Photo-guide to the Constellations Chris Kitchin The Sun in Eclipse Michael Maunder and Patrick Moore Software and Data for Practical Astronomers David Ratledge Amateur Telescope Making Stephen F. Tonkin Ed. Observing Meteors Comets Supernovae and other Transient Phenomena Neil Bone Astronomical Equipment for Amateurs Martin Mobberley Transit When Planets Cross the Sun Michael Maunder and Patrick Moore Practical Astrophotography Jeffrey R. Charles Observing the Moon Peter T. Wlasuk Deep-Sky Observing Steven R. Coe AstroFAQs Stephen Tonkin The Deep-Sky Observer s Year Grant Privett and Paul Parsons Field Guide to the Deep Sky Objects Mike Inglis Choosing and Using a Schmidt-Cassegrain Telescope Rod Mollise Astronomy with Small Telescopes Stephen F. Tonkin Ed. Solar Observing Techniques Chris Kitchin Light Pollution Bob Mizon Using the Meade ETX Mike Weasner Practical Amateur Spectroscopy Stephen F. Tonkin Ed. More Small Astronomical Observatories Patrick Moore Ed. Observer s Guide to Stellar Evolution Mike Inglis How to Observe the Sun Safely Lee Macdonald The Practical Astronomer s Deep-Sky Companion Jess K. Gilmour Observing Comets Nick James and Gerald North Observing Variable Stars Gerry A. Good Visual Astronomy in the Suburbs Antony Cooke Astronomy of the Milky Way The Observer s Guide to the Northern and Southern Milky Way 2 volumes Mike Inglis The NexStar User s Guide Michael W. Swanson Observing Binary and Double Stars Bob Argyle Ed. Navigating the Night Sky Guilherme de Almeida The New Amateur Astronomer Martin Mobberley Care of Astronomical Telescope and Accessories M. Barlow Pepin Astronomy with a Home Computer Neale Monks Visual Astronomy Under Dark Skies Antony Cooke continued after index

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