Lacerta M-GEN User Manual page 12

o Complete file(system) menu screens: open, close, delete and create new, a short
file list and file details screen. The date and time settings screen is also accessible
now from menu.
o In Autoexposure, selecting Start/Stop, Pause will change the selection to the more
understandable item.
o LCD contrast can be set (and is stored).
o "AstroTimer mode": the Autoexposure's and Random Displacement's opertion
mode using an external shutter controller device. (This mode is fully compatible
with AstroTimer.) The Autoexposure will have only one time value (period) to set
while the external shutter is active and the shutter output will be only active when
a Random Displacement is being made (the AE program is in wait state).
o New RD mode: besides the default "uniform square" there is a new "square snake"
pattern.
o Exclusive autoguiding output signalling mode. ("Non-simultaneous signalling").
Only one axis can have autoguiding signal active at a time, that's why it is called
"exclusive mode". Between different axis' signal there is a 62ms dead time. This
may be used with "old, touchy" mount that don't tolerate the default parallel
signalling.
o Bugfix : quitting from LiveView screen did not stop the imaging into the screen.
o Bugfix : in some special cases the "guiding image" was drawn into false position –
even if it was inactive.
From 01.20:
o Stepping back in menu tree will hold the priously selected item. It's easier to re-
enter a screen if You had left it accidentally.
o The method of calibration is modified: now it's more immune to temporary star
lose, position evaluation bettered and the result's precision (axis direction) is
displayed.
o Modified RD method: it does not move the guide star to an exact position, instead
it moves it only "close to it" to minimize the dead time between the exposures
(that was rather long in wind or at bad seeing/parametrization).
o Real-time clock (0.1s resolution) and date to timestamp the data stored in the open
file.
o Basic filesystem (and selection only at startup). The open file will store the
guiding "drifts" and the calculated autoguider output signal lengths. To download
the files use the PC application v1.22.
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