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 A- 10-10 m (1 Angstrom) and
centred on the absorption line of neutral hydrogen. This makes many
major features of the Suna (TM)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
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