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| Each frame covers ten minutes |
The first halo, that was recorded by my camera that day, was a lonely unusual ring. This halo had radius about 18 degrees (
1), and it was extremely diffuse and weak. It appeared when quite dense and nondescript high clouds crossed the sun. Just after this mysterious halo, a 22 halo appeared accomponied by a few odd radius halos, such as an upper 23 plate arc, 9, 20, 24 and 35 degrees halos.
