Solar Eclipse 2015: a teaser

After all that driving to get this, I couldn’t let today pass without posting┬átaster shot from the solar eclipse. I find it interesting that, for all the posturing online about the need for Baader solar sheets and that ND filters wouldn’t provide enough protection, nature provided clouds as the best kind of filter anyway. The […]

Noctilucent Clouds

Noctilucent (“night-shining”) clouds are a rare phenomenon: the highest clouds in the atmosphere, at altitudes between 47-53 miles, consisting of tiny crystals of water ice about 100nm in diameter and requiring very cold temperatures to form.┬áNot fully understood, they are a recently discovered meterological phenomenon with no record of their observation before 1885. They also […]