ZWO ASI533, Manual

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ASI533 Manual
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5.3 Cooling system
The ASI533 2-stage TEC cooling system precisely controls the temperature of the sensor.
Unlike traditional CCDs, the ASI533 camera features ultra-low readout noise, efficient cooling,
and adjustable gain. This eliminates the need for ultra-long exposures to capture targets,
dramatically reducing the need for photographic systems and guide systems. However, if a short
exposure is used (eg, less than 100ms, cooling has little effect on the image) the cooling system
can be set to a minimum of -35 °C below ambient.
5.4 Back focus distance
When 11mm T2 Extender is removed from camera, back focus length is reduced to 6.5mm.