Astrel Instruments AST-8300-A Manuel de l'automobiliste - Page 10
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AST-8300-A
Calibration with the dark frame
In order to calibrate the camera with a dark frame, define the amount of frames to
accumulate in the field 'Frame count'. Cover the guide objective to prevent light from
penetrating the camera and press the 'Start' button. At the end of the process the dark
frame will be formed, that will be substracted from every new frame, taken from the
camera, if the 'use calibration' parameter is chosen in the dialogue box of the guide setup.
GUIDING
You can start guiding after the celestial reference frame is determined.
Open 'Processing' -> 'Guiding' from the main menu and choose the 'Info/Configuration' tab.
Set the appropriate size of the square, following the star - 'Square size'. The square area
shouldn't be too small or too large, compared to the visible size of the star.
Choose the threshold algorithm, used to calculate the star position, 'Threshold alg.' The
value 'Smart' is the more precise dynamic threshold calculation, compared to 'Auto'. The
value 'Auto' is the dynamic threshold calculation. The value 'No thresh.' - threshold
calculation is disabled.
You can also save guiding logs in text files. To do this, you have to set the checkbox 'save
Autoguider Manual
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