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ASI183 Manual
11
6.3 Cooling system
The cooled ASI183 cameras have a robust, regulated cooling system, which means that the
camera sensor can be kept at the desired temperature throughout your imaging session. The super
low readout noise, combined with efficient cooling and adjustable gain setting, allows you to do
short or lucky DSO imaging unlike the traditional CCD cameras which need very long exposures
for each frame. However, keep in mind that cooling won’t help with very short exposures such as
less than 100ms.
Based on the testing result at 30℃ ambient temperature, the Delta T of can be 40℃~45℃.
Please note that the Delta T might get down when the cooling system is working for long time.
Also, as the ambient temperature falls, the Delta T would also decrease.
Here is a dark current test result of 183 sensor at various temperatures.
6.4 Back focus distance
When the attached 11mm T2 Extender is removed the optical distance from the sensor to the
camera body is reduced to 6.5mm.
6.5 Protect Window
There is a protect window before the sensor of ASI183 camera.
It’s an AR-AR coated BK7 glass, diameter is 32mm and 2mm thick.
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