Weekly Wow! Week of April 20, 2020

Showcase 2020 Top 100 winner: "A Black Bear Fishes for Salmon” © Jennifer Smith. A black bear fishing in a stream under a waterfall.
Showcase 2020 Top 100 winner: “A Black Bear Fishes for Salmon” © Jennifer Smith.

All of this week’s Weekly Wow! images can be seen in the slideshow on the NANPA homepage at nanpa.org.

The following Showcase images have been selected to appear on the NANPA home page for the week beginning Monday, April 20, 2020.  To view all of the top 250 photographs from NANPA’s 2020 Showcase competition, see the photo gallery on the NANPA website. The 2020 edition of Expressions contains all of the top 250 photos from the Showcase competition as well as interesting and insightful articles. Order your copy here!

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Two Minute Read – Why Are Star Reflections in Water Elongated?

Why is the reflection of a full moon in the Snake River a stretched-out oval and not a round disk?

Why is the reflection of a full moon in the Snake River a stretched-out oval and not a round disk?

An interesting question came up during a recent NANPA webinar on “Chasing & Photographing the Aurora Borealis” presented by Carl Johnson.  Why is it that the reflections of stars, moon or sun in bodies of water always seem to have elongated shapes?  After all, when doing night photography, with a short enough shutter speed, the moon will be sharp and round; the stars will be tiny, sharp, points of light.  So why do they seem to stretch out when reflected in a lake, stream or pond?

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