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ASI294 Manual
13
5.3 DDR Buffer
ASI294 Pro camera includes a 256MB(2Gb) DDR3 memory buffer to help improve data transfer
reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the
slow transfer speeds when the camera is used with a USB 2.0 port.
5.4 Cooling system
The ASI294 Pro camera 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 35℃~40℃. 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 ASI294 Pro sensor at various temperatures.
5.5 Back focus distance
When 11mm T2 Extender is removed from camera, back focus length is reduced to 6.5mm.
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