Specifications

Full frame download 16.3 s (Low noise)
13.1 s (Preview)
Model G4-16000
Gain 1.6 e-/ADU (all binnings)
System read noise 9 e- (Low noise)
11 e- (Preview)
Full frame download 26 s (Low noise)
22 s (Preview)
System read noise depends on the particular CCD detector. For instance
KAF-6303 can be read with 11 e
-
RMS.
Download times are valid for USB 2.0 host and may vary depending on host
PC.
G4-16000 cameras use the same gain for unbinned and binned reading
when used with system driver version 2.3 and higher. When older driver is
used, stated gain 1.6 e-/ADU is used for 1×l binning only, while all other
binning use 2.7 e-/ADU. Gain setting was unified to utilize the full A/D
converter dynamic range, because particular detector output node cannot
pass higher output signal levels either way.
The gain in binning modes of G4-9000 cameras was adjusted from
2.5 e-/ADU to 1.7 e-/ADU beginning with system driver version 2.3 from
the same reasons.
CCD Chip Cooling
Regulated two-stage thermo-electric cooling is capable to cool the CCD
chip up to 45 °C below ambient temperature. The Peltier hot side is cooled
by a fans. The CCD chip temperature is regulated with ±0.1 °C precision.
High temperature drop and precision regulation ensure very low dark
current for long exposures and allow image proper calibration.
The camera head contains two temperature sensors – the first sensor
measures directly the temperature of the CCD chip. The second one
measures the temperature of the air cooling the Peltier hot side.
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