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Setting The CCD Readout Speed
There are three CCD readout modes from which one can choose. Each
mode has different operational characteristics, the most important
of these being the CCD full frame readout speed. These characteristics
may be found under the
SITe2 parameters.
The three readout modes are "Standard", "Quick" and "Turbo". The readout
mode may be set by typing the corresponding command on the ICS:
SYS>standard
SYS>quick
SYS>turbo
The CCD status window on the DAS will then change appropriately.
CCD Binning
In standard mode, there is a way of decreasing the readout speed by
binning the pixels on the CCD. The default binning is 1:1 where every pixel
is used at a pixel scale of 0.33 arcsec/pix. To change the binning to
2:2 (ie: 4 pixels become 1 and the pixel scale becomes 0.66 arcsec/pix),
on the ICS type:
SYS>bin 2 2
Please note that whatever readout mode the CCD is in before issuing this
command, it will automatically default to "Standard" afterwards. To check
that the binning has changed appropriately, look at the CCD status window on
the DAS.
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