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This button will turn off Lock and open the Camera Settings window:
Figure 15. Camera Settings Window available through the GuideStar II Tab.
o
Exposure Times
should be set so that Max Value for each camera is
below 255. The sensors saturate at Max Value = 255.
o
Pixel Clock:
At high Pixel Clock values (>20-25), a Pixel Clock Error
may occur. The default value can be used in most cases.
o
FPS
(frames per second) A lower FPS will slow loop response but will
permit longer Exposure Times. The default value can be used in most
cases.
o
Telescope magnification
The default value should be used in most cases.
This number is used to convert positions on the camera sensors to
positions of the incident beam. Values of beam position and width
reported on all tabs scale with
this number. The default is the nominal
value at the center of the image. Distortion is present towards the image
edges.
o
Threshold
Pixel values below the Threshold will be ignored in centroid
calculations. This is used to reduce effects of ambient or stray light.
To close the Camera Settings window, click on the OK button.
