QHY600C-PH – Colour CMOS Camera

$7,630.00

AUD Price shown includes GST
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SKU: 110061
pixelheight6388
pixelsize3.76
pixelwidth9576

 



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    With the advantage of low readout noise and high-speed readout, CMOS technology has revolutionized astronomical imaging. A monochrome, back-illuminated, high-sensitivity, astronomical imaging camera is the ideal choice for astro-imagers. The QHY600M-L uses the latest SONY back-illuminated sensor, the IMX455, a full frame (35mm format) sensor with 3.76um pixels and native 16-bit A/D.  This sensor is available in both monochrome and color versions.  The QHY600C-PH ends the days of non-16bit CMOS cameras and it ends the days non-full frame (and larger) monochrome CMOS cameras.

    The QHY600C-PH has extremely low dark current (0.002e/p/s@-20C) using SONY’s Exmor BSI CMOS technology. QHY600C-PH is also a zero amplifer glow camera. The QHY600C-PH has only one electron of read noise at high gain and full resolution and 4FPS readout speed.  One electron of read noise means the camera can achieve a SNR>3 at only 4 to 6 photons. This is perfect performance when conditions are photon limited, i.e., short exposures, narrow band imaging, etc., making this large area sensor ideal for sky surveys, time domain astronomy, fluorescence imaging, DNA sequencing and microscopy.

    Models

    QHY600 Series have mutiple models which covers both photographic and scientific using. Below list different types of QHY600 PH (photographic) series:

    QHY600PH : Standard version for amateur astrographers;

    QHY600M-L QHY600PH-SBFL (Short back-focal length version) :specially designed for DSLR lens users or those who has special requirment of short back focal length. This version has a special front part version which has 14mm B.F.L only (The B.F.L consumed equals 12.5mm when connecting QHYCFW. About the defination of “BFL Comsumed” and our adapter system please view: https://www.qhyccd.com/astronomical-camera-adapter-bfl-solution/). QHY600SBFL can easily match Canon/Nikon lens even with filter wheel. On the side of this adapter there is a 4mm hole to connect air pump through plastic pipe in case of the  dewing glass when necessary.

     

    QHY600M-L QHY600L : a lite, shorter and cheaper version. Compared with QHY600PH, QHY600PH-Lite has the following features compared with previous models: QHY600L only has mono version;  The body length becomes shorter, which is about 112mm, and its price is lowered compared with QHY600PH; The Built-in DDR3 Buffer (memory storage) is adjusted to 1GB compared to 2GB of QHY600PH/Pro. Other specifications of QHY600L keep the same with QHY600PH except the body length and weight.

     

    2GB DDR3 image buffer

    In order to provide smooth uninterrupted data transfer of the entire 60MP sensor at high speed, the QHY600 has 2GB DDR3 image buffer. The pixel count of the latest generation of CMOS sensors is very high resulting in greater memory requirements for temporary and permanent storage.  For example, the QHY600 sensor produces about 120MB of data per frame.  The data band-width is also increased from the original 16-bits to the current 32-bits.  Transferring such a large file sizes necessarily requires the camera to have sufficient memory. The QHY600 has adopted a large-capacity memory of up to 2GB.  Data throughput is doubled. This large image buffer meets the needs of high-speed image acquisition and transmission of the new generation of CMOS, making shooting of multiple frames smoother and less stuttered, further reducing the pressure on the computer CPU.

    Another advantage is that when using some computers that do not have fast processors or have poor support for USB 3.0, the computer can’t transfer high-speed data well, and the data is often lost. The DDR can buffer a lot of image data and send it to the computer. Even if the USB 3.0 transmission frequently gets suspended, it will ensure that data is not lost. There are options in SharpCap to turn DDR buffering on or off. The current version of the ASCOM driver works in DDR mode.

    Native 16 bit A/D: The new Sony sensor has native 16-bit A/D on-chip. The output is real 16-bits with 65536 levels. Compared to 12-bit and 14-bit A/D, a 16-bit A/D yields higher sample resolution and the system gain will be less than 1e-/ADU with no sample error noise and very low read noise.

    BSI: One benefit of the back-illuminated CMOS structure is improved full well capacity. This is particularly helpful for sensors with small pixels. In a typical front-illuminated sensor, photons from the target entering the photosensitive layer of the sensor must first pass through the metal wiring that is embedded just above the photosensitive layer. The wiring structure reflects some of the photons and reduces the efficiency of the sensor. In the back- illuminated sensor the light is allowed to enter the photosensitive surface from the reverse side. In this case the sensor’s embedded wiring structure is below the photosensitive layer. As a result, more incoming photons strike the photosensitive layer and more electrons are generated and captured in the pixel well. This ratio of photon to electron production is called quantum efficiency. The higher the quantum efficiency the more efficient the sensor is at converting photons to electrons and hence the more sensitive the sensor is to capturing an image of something dim.

    Zero Amplify Glow: This is also a zero amplifer glow camera.

    TRUE RAW Data: In the DSLR implementation there is a RAW image output, but typically it is not completely RAW.  Some evidence of noise reduction and hot pixel removal is still visible on close inspection.  This can have a negative effect on the image for astronomy such as the “star eater” effect.  However,  QHY Cameras offer TRUE RAW IMAGE OUTPUT and produces an image comprised of the original signal only, thereby maintaining the maximum flexibility for post-acquisition astronomical image processing programs and other scientific imaging applications.

    Anti-Dew Technology: Based on almost 20-year cooled camera design experience, The QHY cooled camera has implemented the fully dew control solutions. The optic window has built-in dew heater and the chamber is protected from internal humidity condensation. An electric heating board for the chamber window can prevent the formation of dew and the sensor itself is kept dry with our silicon gel tube socket design for control of humidity within the sensor chamber.

    Cooling: In addition to dual stage TE cooling, QHYCCD implements proprietary technology in hardware to control the dark current noise.

    Multiple Readout Modes

    Multiple Readout Modes are special for QHY 16-bit Cameras (QHY600/268/461/411).  Different readout modes have different driver timing, etc., and result in different performance. See details at “Multiple Readout Modes and Curves” Part.

    Random change thermal noise suppression function

    You may find some types of thermal noise can change with time in some back-illuminated CMOS cameras. This thermal noises has the characteristic of the fixed position of typical thermal noise, but the value is not related to the exposure time.  Instead, each frame appears to have its own characteristics.  The QHY600/268/461/411 use an innovative suppression technology that can significantly reduce the apparent level of such noise.

    UVLO Protection

    UVLO(Under Voltage Locking) is to protect the electronic device from damage caused by abnormally low voltages.

    Our daily life experience tells us that the actual operational voltage of an electrical device must not significantly exceed the rated voltage, otherwise it will be damaged. For such precision equipment as cameras, long-term work at too low input voltage can also be detrimental to the working life of the camera, and may even make some devices, such as power manager, burn up due to long-term overload. In the all-in-one driver and SDK after 2021.10.23 stable version, the camera will give a warning when the input voltage of the camera is below 11V.

    Optimizing USB Traffic to Minimize Horizontal Banding

    It is common behavior for a CMOS sensor to contain some horizontal banding. Normally, random horizontal banding can be removed with multiple frame stacking so it does not affect the final image. However, periodic horizontal banding is not removed with stacking so it may appear in the final image. By adjust the USB traffic in Single Frame mode or Live Frame mode, you can adjust the frequency of the CMOS sensor driver and it can optimize the horizontal banding appeared on the image. This optimized is very effective to remove the periodic banding in some conditions.

    A typical Periodic Horizontal Noise under certain USB_TRAFFIC values.

    Reboot the camera by power off and on

    The camera is designed to use the +12V to reboot the camera without disconnecting and reconnecting the USB interface. This means that you can reboot the camera simply by shutting down the +12V and then powering it back on. This feature is very handy for remote controlling the camera in an observatory. You can use a remotely controlled power supply to reboot the camera. There is no need to consider how to reconnect the USB in the case of remote control.

    Specifications
    Model QHY600PH (Photographic Version)

    QHY600PH SBFL (Short Back Focal Length Version)

    QHY600PH L (Lite Version)

    CMOS Sensor SONY IMX455
    Mono/Color Both Available (while Mono only with QHY600PH-L)
    FSI/BSI BSI
    Pixel Size 3.76um x 3.76um
    Effective Pixel Area 9576*6388

    (9600*6422 with overscan and optically black area)

    Effective Pixels 61.17 Megapixels
    (effective area.
    Sensor Size Full Frame 36mm x 24mm
    A/D Sample Depth

     

    16-bit (0-65535 levels) at 1X1 binning

    18-bit at 2X2, 19-bit at 3X3, 20-bit at 4X4 software binning

    *QHY600 uses the software digital binning for 2*2binning. With digital sum, 2*2binning will be four 16-bit summed then it is 18-bit.

    Full Well Capacity (1×1, 2×2, 3×3) Standard Mode
    >51ke-  / >204ke- / >408ke-
    Super Full Well Mode
    >80ke-  / >320ke- / >720ke-
    Full Frame Rate USB3.0 Port Image Transfer Speed

    Full Frame Size: 4.0FPS (8-bit output)

    Full Frame Size: 2.5FPS (16-bit output)

    7.2FPS at 9600×3194, 22.5FPS at 9600×1080, 28FPS at 9600×768, 47FPS at 9600×480, 160FPS at 9600×100,

    Fiber Port Image Transfer Speed (QHY600Pro only)

    Full Frame Size: 4.0FPS (16-bit output)

    Readout Noise 1.0e- to 3.7e-  (Standard Mode)
    Dark Current 0.0022e-/p/s @ -20C    0.0046e-/p/s @ -10C
    Exposure Time Range 40us – 3600sec
    Unity Gain* 25 (Extended Full Well Mode) *

    *With the improvement of the CMOS technology, the 16bit CMOS camera has been released, like QHY600/268/411/461. For these cameras, even in lowest gain it has beyond the requirement of unit gain (less than 1e/ADU due to sufficient samples) So you can directly set gain 0 as start. Please note QHY600/268C/411/461 has extend full well mode. In this mode you still need to find out the unit gain position.

    Amp Control Zero Amplifer Glow
    Firmware/FPGA remote Upgrade Supported. Via Camera USB Port
    Shutter Type Electric Rolling Shutter
    Computer Interface USB3.0
    Built-in Image Buffer DDR3 memory

    PH & PH SBFL ver.: 2GBytes
    Lite ver. : 1GBytes

    Hardware Frame Sequence Number Supported
    Cooling System Dual Stage TEC cooler:
    – Long exposures (> 1 second) typically -35C below ambient
    – Short exposure (< 1second) high FPS, typically -30C below ambient(Test temperature +20°)
    Optic Window Type AR+AR High Quality Multi-Layer Anti-Reflection Coating
    Anti-Dew Heater Yes
    Telescope Interface M54/0.75
    Back Focal Length QHY600PH&QHYPH-L: 17.5mm+6mm (±0.2)

    QHY600SBFL: 14.5mm*

    *The BFL Consumed equals 12.5mm when connecting QHYCFW. About the defination of “BFL Comsumed” and our adapter system please view: https://www.qhyccd.com/adapters/

    Weigth PH Version: 850g
    Lite Version: 790g
    Power 40W/100%
    20W/50%
    13.8W/0%
    Camera Curves

    QHY600M-L camera curve for system gain QHY600M-L camera curve for noise readoutQHY600M-L camera curve for full wellQHY600M-L camera curve for dynamic range

     

    QHY600M-L camera curve for dark current vs temp

    The curve shows absolute QE

    QHY600M-L QE Graph

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