The four astronauts were told to prepare to observe the eclipse by calibrating their cameras' exposure.
They will split into a "window team", and a "cabin team", says Angela Garcia, a science officer for the Artemis mission.
The cabin team supports the window team in their observations by using the onboard cameras and sensors.
Nasa said the astronauts have been provided with a "fleet of cameras" to capture images during their mission, which will include photographs of the solar eclipse.
As a reminder, there are four astronauts aboard the Orion spacecraft that make up the Artemis II crew.
It includes three Nasa astronauts - Commander Reid Wiseman, Victor Glover and Christina Koch - along with Jeremy Hansen of the Canadian Space Agency.
For those following the mission via the Nasa livestream, you will regularly hear the astronauts recording their observations and communicating with the crew on the ground.
