- #1
swampwiz
- 571
- 83
I was reading this Wikipedia article that says observations can be done even when the Sun is at 38° of elevation:
https://en.wikipedia.org/wiki/Concordia_Station
https://en.wikipedia.org/wiki/Concordia_Station
Concordia Station has been identified as a suitable location for extremely accurate astronomical observations. The transparency of the Antarctic atmosphere permits the observation of stars even when the sun is at an elevation angle of 38°.