{"product_id":"qhy-461m-ph-medium-format-monochrome-camera-photographic-version-110123","title":"QHY 461M-PH - Cooled BSI Monochrome Camera - Medium Format Sensor, Photographic Version - 110123","description":"\u003cp\u003eThe QHY461M-PH is a cooled astronomy imaging camera featuring a back-illuminated (BSI) Sony IMX461 monochrome CMOS sensor with a 3.76μm pixel size and a 16-bit ADC. The QHY461M-PH offers a 100-megapixel resolution!\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/461PH_Closeup.jpg?v=1773435223\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNative 16 bit A\/D: \u003c\/strong\u003eThe Sony sensor has native 16-bit A\/D on-chip. The output is real 16-bits with \u003cstrong\u003e65536 levels\u003c\/strong\u003e. 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBSI: \u003c\/strong\u003eOne benefit of the back-illuminated CMOS structure is improved full well capacity. 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTRUE RAW Data: \u003c\/strong\u003eIn 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZero Amplify Glow: \u003c\/strong\u003eThis is also a zero amplifier glow camera.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCooling \u0026amp; Anti-dew Control: \u003c\/strong\u003eIn addition to dual stage TE cooling, QHYCCD implements proprietary technology in hardware to control the dark current noise. 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSealing Technology: \u003c\/strong\u003eBased on almost 20-year cooled camera design experience, The QHY cooled camera has implemented the sealing control solutions. The sensor itself is kept dry with our silicon gel tube socket design for control of humidity within the sensor chamber. By the way, there’s no oil leaking.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMultiple Readout Modes: \u003c\/strong\u003eMultiple 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRandom change thermal noise suppression function: \u003c\/strong\u003eYou 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUVLO Protection: \u003c\/strong\u003eUVLO (Under Voltage Locking) is to protect the electronic device from damage caused by abnormally low voltages.\u003c\/p\u003e\n\u003cp\u003eOur 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptimizing USB Traffic to Minimize Horizontal Banding: \u003c\/strong\u003eIt 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 adjusting 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 that appears on the image. This optimization is very effective in removing the periodic banding in some conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReboot the camera by power off and on: \u003c\/strong\u003eThe 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.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCMOS Sensor: Sony IMX46\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEffective Pixel Area: 11664*8748\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eTotal Pixel Area: 11760*8842 (including optical black area and overscan area)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEffective Pixels: 102 Megapixels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSensor Size: Medium Format, 44mm*33mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFrame Rates: Full Resolution is 2.7FPS@8bit, 1.3FPS@16bit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eDark Current: 0.003e-\/pixel\/sec @-20ºC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eExposure Time Range: 50μs – 3600sec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eBack Focal Length: 32.5 mm (+\/- 0.2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eMono\/Color: Mono only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFSI\/BSI: BSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003ePixel Size: 3.76μm*3.76μm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eA\/D: Native 16-bit (0-65535 greyscale) A\/D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFull Well Capacity (1x1, 2x2, 3x3): Standard Mode 50ke- \/ 200ke- \/ 450ke- Extended Full Well Mode 80ke- \/ 320ke- \/ 720ke-\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eReadout Noise: 1e- to 3.7e- (HGC Mode)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAmp Control: Zero Amplifier Glow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eShutter Type: Electronic Rolling Shutter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eComputer Interface: USB3.0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-In Image Buffer: 1GB DDR3 Memory Buffer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eCooling System: Dual-Stage TEC Cooler: – Long exposures (\u0026gt; 1 second) typically -35ºC below ambient – Short exposure (\u0026lt; 1 second) high FPS, typically -30ºC below ambient (test temperature +20ºC)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eOptic Window Type: AR+AR high quality multi-layer with anti-reflection coatings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAnti-Dew Heater: Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eHumidity Sensor: Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFirmware\/FPGA Remote Upgrade: Available via Camera USB port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eWeight: 1850g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eRecommended Gain: 26 (PH Mode, or Extended Full Well Mode), 56 (High Gain Mode)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":43001599492209,"sku":"QHY-110123","price":14904.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QHY461M_PH_Sensor.jpg?v=1773432766","url":"https:\/\/khanscope.com\/products\/qhy-461m-ph-medium-format-monochrome-camera-photographic-version-110123","provider":"Khan Scope Centre","version":"1.0","type":"link"}