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I have done an extensive search on that particular chip in that camera and nowhere do they specify the lux rating.
The lux rating tells you if a webcam is suitable for astro work. If a webcam has a lux rating of <1 (less than 1 lux) it is usable. Any higher and it is useless for astro work.
If a camera DOES have a lux rating of <1, it gets mentioned in the specs and the advertising, as that means it is very good and is a great advertising point.
The other problem is it is a CMOS.
System Specifications
* Sensor: High quality VGA CMOS
* Video Capture: 160x120, 176x144, 320x240, 352x288, 640x480, 800x600,1280x960
* Video File Type: AVI ,MPEG
* Image File : BITMAP
* Frame Rate: Up to 30 frames per second (with recommended system)
* Field of View: 42 degrees horizontal
* Optics: Manual focus
* White Balance: Automatic
* Color Depth: 24 bit true color
* Cable length: 5 ft. USB cable
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