The ALccd-QHY cameras 163, 174, 178, 224 and 290 are based on state-of-the-art CMOS sensors with sensor diagonals of up to 22 mm. The models differ mainly in their sensor and pixel size and whether they have a BSI (back illuminated) or FSI (front illuminated) sensor.
The cameras are very compact, which is particularly useful for smaller, portable telescopes, but a small camera is also advantageous in special technical assemblies.
The integrated DDRII buffer memory has a storage capacity of 128 MB and ensures that no images are lost during download. It is also a prerequisite for ensuring that no images are lost or that images can be downloaded at all, even with low-performance PCs and USB 2.0.
The sensor chamber of the cooled cameras is sealed and heated with a special heater. This prevents fogging, especially in areas with high humidity.
The sensor does not require a mechanical shutter; it works electronically. The ALccd-QHY 174 model has a global shutter, while the other models have a rolling shutter.
The series includes various light detection technologies, via BSI (backlighting) or classic FSI (front lighting). BSI sensors, as used in the ALccd-QHY 178 and 290 models, generally have higher light sensitivity due to the characteristic properties of these sensors.
The ALccd-QHY 163, 174, 178, 224 and 290 cameras require a 12V power supply for operation. The connection is screw-mounted and securely connected to the power supply plug.
