Friday, April 11, 2025

Ring around the moon

 I was trying to test a new telescope and eyepiece combination, but the weather wasn't the best.  There was, however, a prominent ring around the moon.  Rings like this are caused by moonlight (or sunlight in daytime) refracting through hexagonal ice crystals in the atmosphere.

Moon over Snowshoe Mtn.  Olympus 9-18mm @ 9mm. ISO 3200, 1/4 s.

 
iphone

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