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QHY5-II series cameras fit in a standard 1.25-inch eyepiece holder and have an adjustable location ring for confocality with an eyepiece. They are ideal for use as low-weight autoguiders. QHY5-II series cameras come in very small but powerful packages! The improved thermal design allows the heat generated by the CMOS sensor to be transferred externally to the telescope's eyepiece tube.

QHY5L-II has high sensitivity and low noise (a highlight of the QHY5-II series). With an exceptional 74% QE, the QHY5L-II's sensitivity is even better than many CCD cameras. It is said that the QHY5L-II's image quality meets or exceeds that of ICX618-based cameras. The read noise is remarkably low (as few as 4 electrons). The sensor's on-chip FPN (Fixed Pattern Noise) calibration function solves one of the major problems of CMOS technology, resulting in images that are clear and uniform, even under high gain. With these advantages, the QHY5L-II provides outstanding image quality for planetary imaging, autoguiding, deep-sky and all-sky imaging. Available in both color and monochrome versions. The sensor has 1280 x 960 pixels at 3.75um and the camera is capable of 30 frames per second in high resolution mode, 106 FPS in VGA mode.


Sensor MT9M034
Total Pixels 1.2 Megapixels
Pixel Size 3.75um
Pixel Array 1280 x 960
Optical Format 1/3 inch
FPS @ 640 x 480 106
FPS @ Full Resolution 30
Peak QE 0.74
A/D Resolution 12-bit
Shutter Electronic
Dynamic Range >115 dB HDR Mode
Weight Color 45g, Mono 43g

In the Box

Note: The spacer is used to set the back focus of the CS/C lens to correct value. The CS/C standard backfocus is 12.5/17.5mm. While QHY5L-II backfocus is a little short than this value (This is to guarantee the camera/lens combination to get focus at infinite distance)