Lots of innovations to consider during the period of polar twilight after the March Equinox at the South Pole station. The same principles apply to polar sunset as they do at habitable latitudes as objects close to the central Sun will appear during that period to the left of the sun for an extended period of about 6 continuous weeks before polar darkness sets in.

On the Solstice neither Venus nor Mercury will be observed for the same reason that at daily rotational midnight, the body of the Earth prevents objects close to the Sun from being observed.


Polar twilight would not only present unique challenges but also unique opportunities including observational innovations relating to orbital elements as rotation is residual in the North pole region (zero at the North polar latitude itself). Just a normal perspective in an era that is less so.