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4.5 Cooperation of the functional units
The three main functional parts (AG, RD, AE) need to work synchronized if the RD is
enabled. This communication is shown below in a simple diagram (the time axis goes
downside):
Some behaviour read from the diagram:
If the RD is disabled (“Requiring new position” will fail) there is no
synchronization between AE and AG.
The RD as a program must be enabled only at one moment (the only horizontal
line), the movement is done using parameter values at that time moment. Changing
the parameters (or enabling/disabling it) any other time will not affect anything.
The Autoguiding works in a special mode when a displacement is in progress. It
starts to autoguide to the new position automatically with the current parameters
but the guiding is stopped right after both of the correction signals (axes) got
inactive at least for a moment since the start of the movement. The new star
position (that is not the exact calculated position) is then measured for max. 2
seconds and the guiding is continued in that position and the Autoexposure is left
to go on. (This method shorten the displacement time and gives more for imaging).
Autoexposure
(AE)
Random
Displacement (RD)
Autoguiding
(AG)
Wait state
(„w”)
Program start
Requiring new position
Start moving to
new position
Autoguiding active
Special mode
“Autoguiding” for RD
On new position
Autoguiding active
Start Exposure
(„m” or „E”)
