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Overview
QHY268 Pro M has SONY IMX571 APS-C format CMOS sensor inside. 26mega pixels, Back-illuminated, native 16BIT ADC. QE
is up to 91% and readout noise is as low as 1.1e Even with a 3.76um pixel size, it has a big full-well up to 75ke. It has extremely
low thermal noise 0.0005e/pixel/sec @ -20C, ZERO amplifier-glow performance, It has a maximum frame rate of
6.8FPS@16bit full resolution.
QHY268PRO-M has only monochrome version. QHYCCD also supplies its liquid-cooling version, which is a customized type
and needs to be pre-ordered).
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.
Interfaces
2*10g
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Related Manuals for QHYCCD QHY268PRO M
Summary of Contents for QHYCCD QHY268PRO M
- Page 1 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.
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Page 2: Specifications
The product has a built-in 2*10Gbps fiber socket. It can work with the QHYCCD PCIE2.0x8 data grabber card. The fiber interface is for the requirement of the professional obs. It will give the following advantages than the USB3.0 interface. Then what is the benefit of the Fiber Interface? Higher data rate. - Page 3 6280*4210 (includes the optically black area and Effective Pixel Area overscan area) Effective Pixels 26MP Sensor Size APS-C A/D Sample Depth Native 16-bit (0-65535 greyscale) A/D 51ke- Full Well Capacity (1×1, 2×2, 3×3) 75ke- or above in extended full well mode USB3.0 Port: Full Resolution 6.8FPS@8BIT 6FPS @16BIT 2048lines 13.6FPS@8BIT 11.5FPS@16BIT...
- Page 4 Two-stage TEC cooler Air Cooling Version Typical -30C below ambient in short exposure time (exposure time < 10sec) Typical -35C below ambient in long exposure Cooling System time (exposure time > 30sec) Test temperature +20° Water Cooling Version Typical -45C below ambient in long exposure time (exposure time >...
- Page 6 Monochrom’s Spectrum Response Curve. The curve is based on SONY’s datasheet. In the datasheet, it is the normalized curve QHYCCD test it by comparing with an known QE CCD sensor. And get this curve. This curve is only a reference.
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Page 7: Mechanical Drawing
EZCAP_QT , which is developed by QHYCCD and can be used in QHY devices tests, and management of updates. So even if you won’t use EZCAP_QT for capturing, we suggest you install it. - Page 8 EZCAP_QT EZCAP_QT is software developed by QHYCCD. This software has basic capture functions for QHYCCD deep sky cameras. Run EZCAP_QT. Click “Connect” in Menu -> Camera. If the camera is successfully connected, the title line of EZCAP_QT will display the camera firmware version and the camera ID as shown below.
- Page 9 If you have already started the SharpCap software before connecting the camera, in order to open the camera, click on the “camera” in the menu bar and then select the device. Offset adjustment. When you completely block the camera (i.e., like taking a dark frame) you may find that the image is not really zero.
- Page 10 N.I.N.A Open N.I.N.A. – Nighttime Imaging ‘N’ Astronomy. Drive connections via ASCOM.
- Page 11 BroadCast WDM Camera Driver QHYCCD BroadCast WDM Camera is a broadcast driver that supports QHYCCD cameras with video broadcast function, which can meet the needs of customers to send video images to other target software. For example, use sharpcap to connect a WDM-enabled camera, and the sharpcap display video image can be sent to other WDM-supported software for display, which is suitable for video online broadcast applications.
- Page 12 The installation process is over, right-click the computer to find the device manager, and check that the image device name is QHYCCD BroadCast WDM Camera, which means the installation is successful. Activate the function: Usually sharpcap is used to connect the camera as the broadcasting terminal. After connecting the camera, you need to turn...
- Page 13 Common supporting software (ie, broadcast receiver) includes: UFOCAPTURE, HANDYAVI, QQ video functions, etc. AMcap test effect chart: HANDYAVI test effect chart: UFOCAPTURE test renderings:...
- Page 14 Precautions: Currently only supports Windows system. Currently, the SDK does not support 16 bits for the time being. RGB24 mode must be selected for color images, otherwise the image will appear gridded. Advanced Control Tools Click to download 2021.1.2 Debug TOOL Release TOOL Run Sharpcap and make sure the QHY Camera works well under it.
- Page 15 Click “connect” button and it will show camera name and series number. select QHY Camera tabl. check on the “Enable TrigOut” Input 2 to the textbox near to the “GPIO PORT MODE”. Then click the “GPIO PORT MODE” Button to set the GPIO working mode.
- Page 16 In this mode, Four GPIO port is configed as gps_clock, gps_data, shuttermeassure,gps_control. You can connect with QHYCCD-GPSBOX. The camera will output the shuttermeassure signal to GPSBOX and GPSBOX will send the data to camera. Camera will replace the first some pixel to the gps data .
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Page 17: Maintenance
MODE3: 4PIN GPS Card TrigIn mode In this mode. there is two pin is configured as ouptut . Both of the two pins is the shuttermeassure signal but one of it is inverted. This is suitbale for some GPS card which need such a “differencial signal”. But please note this is not LVDS signal. It is still TTL signa, MODE4: Multi-Camera Master Mode TO BE ADDED... - Page 18 Preventing fogging of the CMOS chamber If the ambient humidity is very high, the optical window of the CMOS chamber may have condensation problems. The QHY600 has a built-in heating plate to heat it to prevent fogging. In most cases, it is very effective. However, If fogging still persists, try the following: 1.
- Page 19 How to improve the power supply? 1. Make sure the output voltage of the AC adapter is not less than 12V and the maximum output current can reach 4A or more. Otherwise, the AC adapter itself will not meet the power demand of the camera and it may cause a low voltage problem.
- Page 20 CMOS not to work. Therefore, if UVLO=3 occurs, it is recommended to contact QHYCCD technical support for further judgment. 3. Using older versions of drivers and firmware may cause false positives (UVLO=9). Please make sure that ALL-in-one SDK version is out of stable version 2021.10.23 or higher.
- Page 21 2.SetQHYCCDBurstModeStartEnd 3.SetQHYCCDBurstIDLE...
- Page 22 4.ReleaseQHYCCDBurstIDLE 5.SetQHYCCDBurstModePatchNumber 6.ReseQHYCCDtFrameCounter...
- Page 23 7.SetQHYCCDEnableLiveModeAntiRBI 8.EnableQHYCCDImageOSD Sample Code...