2003/3/18 12:17 EST. An upper tangent arc above the sun (which was blocked by the lamp).
Photo taken with Nikon coolpix 995 digital camera, at Carnegie Mellon University, Pittsburgh PA. Earlier that day there was
a 22 degree halo and sundogs
.
A flat upper tangent arc
2002/3/1 12:45 EST. Possibly an upper tangent arc above the sun (which was just blocked by the GSIA building). Sun altitude was 42 degree.
Photo taken with Canon sure shot 60zoom, Kodak 400 film, at Carnegie Mellon University, Pittsburgh PA.
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All images by Jerry Xiaojin Zhu unless noted otherwise. Feel free to use them for your personal enjoyment. For other usage please contact the author at jerryzhu@gmail.com
