Astrophotography

Descriere

Today's amateur and professional astronomers take images of the stars using affordable digital cameras known as CCD (charge coupled devices). This improved technology has made astrophotography possible for everyone; however CCD cameras have features exclusive to astronomy and so there is a learning curve. Astrophotography: The Essential Guide to Photographing the Night Sky features practical guidance from an astrophotographer with years of experience explaining astronomy to hobbyists. Mark Thompson, known as "the people's astronomer" in the UK, guides readers through the entire process, beginning with buying equipment and ending with processing images on a home computer using free software. From the humble mobile phone to high-end specialist cameras, Thompson brings it all to life with his experiences, and many of his own astronomical images. The book includes: Choosing the right equipment: Digital SLR cameras and lenses, guide camera, webcams, tripods, telescopes (reflecting and refracting, tracker imaging) and mounts (altazimuth, equatorial, fork, drive camera), dew protection and heaters, color filter wheels, solar filters, electronic focuser. Getting images without a telescope: The "300" rule, ISO speed noise reduction, exposure times, star trails, constellations, Space Station and satellite photography, meteor showers, auroras, noctilucent clouds, combined exposures, "live view", the Sun, eclipses. Solar System photography: Smartphones, webcams, using free RegiStax software, infrared blocking filters. Deep-Sky Images: Balancing a telescope, polar alignment, connecting camera to telescope, setting up guide cameras, camera cooling technology, focus, image calibration, fat fields and dark frames, image comp...