7/9/2023 0 Comments Harvest moon october 2019![]() The photo below shows a composite of images taken September 30, 2020. The Moon is no bigger on the horizon than when it is higher in the sky. The effect is strictly an optical illusion. People sometimes think the refraction effect is responsible for making the Full Moon appear large on the horizon, but the atmosphere has nothing to do with it. ![]() The Moon becomes more normal and spherical as it rose higher. Note the effects of atmospheric refraction squishing the Moon’s disk close to the horizon. I shot the sequences through a small telescope to zoom in on the Moon’s disk as it rose over the flat horizon of the prairie near where I live. I present a short music video (linked to below) of time-lapse sequences of the Harvest Moon of 2020 rising. On two clear evenings the Harvest Moon rose red and and large over the Alberta prairie.
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