Re: Dark-Adapt Your Eyes!

Yes indeed! Good article.
The sweet spot in averted vision is real. Can't collimate my brain enuf to memorize object positions before going afield, so I bring charts. But very, very judicious use of the absolute dimmest possible light is critical. And still requires a wait for best perception to return after looking at the chart. There is a noticable lag time.

But very, very judicious use of the absolute dimmest possible light is critical. And still requires a wait for best perception to return after looking at the chart. There is a noticable lag time.
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If the skies are sufficiently dark so that a dim light is a problem, I sometimes use an eye cup over my good eye when reading charts.

Jon