Noctilucent Cloud Season 2026: Observing the Mesosphere in Summer Twilight
Northern summer is the season for noctilucent clouds: blue-white ice clouds in the mesosphere that glow after sunset or before dawn when ordinary clouds are dark.
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Northern summer is the season for noctilucent clouds: blue-white ice clouds in the mesosphere that glow after sunset or before dawn when ordinary clouds are dark.
A field guide to judging real observing quality by separating cloud cover, transparency, seeing, humidity, smoke, and target type.
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