The 4 December 2021 solar eclipse

timelapse of the 4 December eclipse at Pole
Above, an incredible timelapse photo of the eclipse by South Pole Telescope 2022 winterover Aman Chokshi.

Aman, from Melbourne, Australia, one of the SPT 2022 winterovers, shared his photo with NASA's website Astronomy Picture of the Day for 11 December 2021,...subsequently it was added to the USAP Photo Library (link to original). Elsewhere he commented that the photos were taken every 4 minutes. He set his Sony A7RIV camera with a 24-70mm Sigma lens up in the snow with a power pack and hand warmers...and went to watch things on the roof of the passageway between DSL and SPT...where you can see, from left to right, Brandon Amat, Aman Chokshi, Cheng Zhang, James Bevington and Allen Forster, all with raised arms.

eclipse track
More eclipse info...first, above, a graph of the west-to-east eclipse progress that appears on this Earth and Sky website. The blue lines indicate 25% through 100% totality.
Campbell-Stokes sunshine recorders
How is sunshine tracked? These are Campbell-Stokes sunshine recorders...normally one one of these is needed except for places where the sun shines for most or all of 24 hours. The glass spheres act as lenses to focus the sun's lite onto a card, where a track of the sunlight is burned. These instruments were first set up at Pole in November 1964...this January 1996 photo from Pat Mock shows them as I remember, in the snow field behind the dome. Currently they are on the roof of the elevated station.
the eclipse mark on the sunshine recorder card
More eclipse info...first, above, a graph of the west-to-east eclipse progress that appears on this Earth and Sky website. The blue lines indicate 25% through 100% totality. This photo was shared by Jeff DeRosa to the USAP photo library (link to original).
graph of temperature change during the eclipse
Here is a graph of the temperature drop during the partial eclipse, shared by Jeff DeRosa.