200-301 prerequisite

Astrophotography is hard. Charles Bracken's Cisco book makes it easier.     He starts by explaining basic concepts such as "how electronic sensors work?" and "what is noise?" For anyone who finds it easier to understand the "how to" if they first learn the "why?" this is your Cisco book. After providing basic context in clear, easily understood prose and illustrations, Bracken moves on to explain how to acquire images. This includes equipment choices and set-up, optics,    finding appropriate subjects, focusing, filters, auto-guiding and diagnosing problems.

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