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Stephen Sekula (steve@chirp.cooleysekula.net)'s status on Monday, 10-Dec-2018 02:41:15 UTC Stephen Sekula From SPTelescope https://twitter.com/SPTelescope on Twitter: Double sundog around SPT, captured by Amy Bender. Sundogs are the South Pole equivalent of rainbows, except they are caused by ice-crystals in the atmosphere refracting the sun and creating a circular ring the sun (which is shadowed by SPT here). #sundog #Antarctica #southpole https://twitter.com/SPTelescope/status/1071696525649166336/photo/1 https://chirp.cooleysekula.net/attachment/53091