QHY5-II series cameras fit in a standard 1.25-inch eyepiece holder and have an adjustable location ring to be para-focal 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.

QHY5-II cameras use On Semiconductor's MT9M001, 1/2-inch, 1.3 Megapixel monochrome sensor with 5.6 um pixels providing 1280 x 1024 images. It can output 1280 x 1024 @ 30 FPS and 320 x 240 @ 320 FPS.

The QHY5L-II-M 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 Astrophotography 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.