The first-time user will then be registered automatically with the system.
Online help is provided.
Comparison of data from overlapping observation periods enabled the longterm sensitivity changes of COS-B to be estimated. Until three years into the mission, the sensitivity was virtually stable, but a slow fall-off developed. From this monitoring, curves such as the empirical correction factors have been derived. However the level of the background component improved with time. This background was due largely to interactions of cosmic rays with the massive parts of the experiment and surrounding spacecraft subsystems.