Tensors: The Mathematics of Relativity Theory and Continuum Mechanics

the Sun Provides Amateur Astronomers With One Of The Few Opportunities For Daytime Astronomy. in Order To See The Major Features Of Our Nearest Star, Special Telescopes That Have A very Narrow Visible Bandwidth Are Essential. The Bandwidth Has To Be As Narrow As 1 × 10 -10 M (1 Angstrom) And Centred On The Absorption Line Of Neutral Hydrogen. This Makes Many Major Features Of The Sun’s Chromosphere Visible To The Observer. Such Narrow-band Fabry-perot Etalon Filters Are High Technology, And Until The Introduction Of The Coronado Range Of Solar Telescopes, Were Too Expensive For Amateur Use. The Entry-level Coronado Telescope, The Pst (personal Solar Telescope) Costs Under $500. solar Prominences (vast Columns Of Plasma, Best Seen At The Edge Of The Solar Disk), Filaments, Flares, Sunspots, Plage And Active Regions Are All Visible And Can Be Imaged To Produce Spectacular Solar Photographs. Philip Pugh Has Assembled A Team Of Contributors Who Show Just How Much Solar Work Can Be Done With Coronado Telescopes, And Explain How To Get The Best From These Marvellous Instruments. "The Sun provides amateur astronomers with one of the few opportunities for daytime astronomy. In order to see the major features of our nearest star, special telescopes that have a very narrow visible bandwidth are essential. The bandwidth has to be as narrow as 1 x 10-10 m (1 Angstrom) and centred on the absorption line of neutral hydrogen. This makes many major features of the Sun's chromosphere visible to the observer. Such narrow-band ""Fabry-Perot etalon filters"" are high technology, and until the introduction of the Coronado range of solar telescopes, were too expensive for amateur use. The entry-level Coronado telescope, the PST (Personal Solar Telescope) costs under $500. Solar prominences (vast columns of plasma, best seen at the edge of the solar disk), filaments, flares, sunspots, plage and active regions are all visible and can be imaged to produce spectacular solar photographs. Philip Pugh has assembled a team of contributors who show just how much solar work can be done with Coronado telescopes, and explain how to get the best from these marvellous instruments." "At around the turn of the millennium, the introduction of the Coronado range of solar telescopes and filters heralded the 'coming of age' of amateur solar astronomy." "Before then, solar astronomy was mostly white-light only. Hydrogen-alpha systems were expensive and difficult to use, but today even the budget-priced Coronado PST (Personal Solar Telescope) provides a band pass of one Angstrom and is thermally stable. That means that today's amateur solar observers can see - and image - sunspots, flares, prominences, plage, filaments, and active regions of the Sun, all in amazing detail." "Getting the very best out of a Coronado solar telescope still requires knowledge of specialist techniques and an accumulation of experience, which are what this book provides. In Observing the Sun with Coronado Telescopes, Philip Pugh has assembled a team of contributors who show just how much solar work can be done with Coronado telescopes, and explain how to get the very best from these marvelous instruments."--book jacket For this ground-breaking book, Philip Pugh has assembled a team of contributors who show just how much solar observation work can be accomplished with Coronado telescopes, and explain how to get the best from these marvelous instruments. The book shows that Solar prominences, filaments, flares, sunspots, plage and active regions are all visible and can be imaged to produce spectacular solar photographs.