1

In direct mode, the user orders the observatory in "live" via Internet. His requests are taken into accounts immediately. A response time is nevertheless inevitable and function of the connection speed between the user and the observatory.

2

In programmed mode, the observatory records the observation parameters requested by the user, and carries out the request as soon as the whole of the conditions necessary are put together.

1

In the "fast" level, only the main observation parameters are accessible to the user: the target coordinates or name, choice of the camera, exposure time.

2

In the "normal" level, detailed orders are added to the previous parameters: calibration images types, weather parameters...

3

In the "full" level, you can reach all the measurements and all the commandes of the observatory.