This book shows amateur astronomers how to use one-shot CCD
cameras, and how to get the best out of equipment that exposes all
three color images at once. Because this book is specifically
devoted to one-shot imaging, "One-Shot Color Astronomical Imaging"
begins by looking at all the basics - what equipment will be
needed, how color imaging is done, and most importantly, what
specific steps need to be followed after the one-shot color images
are taken. What is one-shot color imaging? Typically, astronomical
cooled-chip CCD cameras record only one color at a time - rather
like old-fashioned black & white cameras fitted with color
filters. Three images are taken in sequence - in red, blue, and
green light - and these are then merged by software in a PC to form
a color image. Each of the three images must be taken separately
through a suitable color filter, which means that the total
exposure time for every object is more than tripled. When exposure
times can run into tens of minutes or even hours for each of the
three colors, this can be a major drawback for the time-pressed
amateur. "One-Shot Color Astronomical Imaging" describes the most
cost-effective and time-efficient way for any amateur astronomer to
begin to photograph the deep-sky.
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