Measuring the absolute QE of the QHY268M

Sony provides relative QE curves for the IMX571 sensor used in the QHY268M camera.  However, by comparing its response with a CCD of known absolute QE, the ICX694 used in the QHY22, we can determine the absolute QE for the QHY268M. The graph below from the Sony IMX571 datasheet shows the relative QE of the IMX571.The good news here is that this curve includes the

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QHY600 Linearity Test

  After the launch of the QHY600 refrigerated CMOS with native 16-bit AD conversion, the QHY600 has received wide attention from astrophotography lovers. And the first batch of production products was ordered out of stock in no time. QHY600 uses SONY’s IMX455 full-frame back-illuminated chip, which provides a variety of readout modes. Therefore, in addition to astrophotography, QHY600 also provides some relatively professional functions. They

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Our Banner is Yours!! Welcome to the Top Page Show

One of the most interesting stuffs of our website is–the home page banner will be left for our user’s photos! The top banner is planned to be changed every two or four weeks. You can send your works to our FaceBook Group: QHYCCD Astronomy Imaging  and better tag the topic#qhyccd, then we will pick up the best (or the most interest/creative) one from all photos

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Welcome to Join Our Gallery!

  If you’re a QHY user, you’re very welcomed to join our gallery with your wonderful astro photos! A gallery named by your name can be set at our website. If you want to have one, please sent your works with some necessary information: All images should be captured with QHYCCD cameras; The images you send should be of high-resolution; Please attach basic specifications of

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