The rotational speed of the spacecraft is gradually reduced
over several days after lift-off and the rotational axis was
changed to achieve the most stable configuration of the spacecraft
five days after lift-off. Deployment of solar cell paddles adds
Sun acquisition control. The X-ray telescope was extended ten
days after lift-off on March 2nd, and performance verification
of observational instruments started.
Artist concept of spacecraft, starting with spin-down, momentum
axis change, solar paddle deployment, and X-ray telescope extension.