What is Dark Adaptation ? Recommendations for Red LED Flashlights for Astronomy

During astronomical observations, our eyes need to be dark adapted in order perceive faint distant celestial objects whose photons have travelled millions and in some cases billions of light years before reaching Earth. In this blog article, I aim to demystify the mechanism of dark adaptation, the importance of dark adaptation, how long does dark adaptation take, how to preserve dark adaptation and also recommend red LED flashlights to use during astronomical observing sessions. Let’s dive right in.

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