Astrel Instruments AST-8300-A Руководство по эксплуатации - Страница 13
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AST-8300-A
need to change this value. The 'Minimum pulse' value is of more improtance. This
parameter defines the threshold of the correction duration. If the calculated correction is
more or equal to 'Minimum pulse', it is transfered to the mount, otherwise the correction is
discarded. If the threshold is too large, then the non-adjustable band of deviations around
the zero value will be too wide and the quality of guiding will be too low. If the threshold is
too small, then the amount of corrections around the zero value will be very large, leading
to constant axis twitching in opposite directions and, as a consequence, badly controlled
antidamping. This fact is particularly important for high load setups with low mechanical
stiffness.
To start guiding and monitor guiding drift graph and statistics, select the 'Drift' tab.
Press 'Start' to begin guiding. The drift graph, current values of corrections and statistics
are updated at every new image from the guider. When ready, you can close the guiding
application by pressing 'Done'. Of course guiding will continue in background and you can
get back to the 'Drift' tab by simply clicking on the autoguider icon on the camera desktop.
When guiding is no more required, press the 'Stop' button, the 'Drift' tab will be closed and
the main lin_guider window is showed.
GENERAL RECOMMENDATIONS
Autoguider Manual
13/14
rev A