{"product_id":"qhyccd-qhy1920","title":"QHYCCD QHY1920 Cooled BSI Scientific Camera","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2.3 Megapixel Back-Side Illuminated (BSI) Sensor\u003c\/li\u003e\n\u003cli\u003eLarge 12µm x 12µm Pixels\u003c\/li\u003e\n\u003cli\u003e58 FPS at Full 1920x1200 Resolution\u003c\/li\u003e\n\u003cli\u003e0.74e- Minimum Read Noise\u003c\/li\u003e\n\u003cli\u003eDual-Stage TEC Cooling to -32°C Below Ambient\u003c\/li\u003e\n\u003cli\u003e128MB DDR2 Onboard Buffer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eQHY1920 Cooled BSI Scientific Camera\u003c\/h2\u003e\n\u003cp\u003eThe QHY1920 scientific camera is engineered for low-light applications, combining a 2.3 Megapixel BSI sensor with massive 12µm pixels on a 23mm x 14.4mm imaging area. With a deep 51ke- full well capacity, 12-bit A\/D conversion, and read noise as low as 0.74e-, it captures faint signals with high dynamic range. The camera maintains a consistent 58 FPS over its USB3.0 interface, supported by a 128MB DDR2 memory buffer to prevent dropped frames during high-speed acquisition.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eLow-Light Sensitivity: 12µm Pixels and 0.74e- Read Noise\u003c\/h3\u003e\n\u003cp\u003eThe QHY1920's primary strength is its exceptional sensitivity. The 12µm pixels provide a massive surface area for photon collection, a critical advantage for photon-starved applications like spectroscopy or capturing faint near-infrared (NIR) sources. This is paired with a Back-Side Illuminated (BSI) sensor architecture and read noise as low as 0.74e-, ensuring that the weakest signals are not lost in camera electronics.\u003c\/p\u003e\n\u003cp\u003eWhile the 2.3 Megapixel resolution is modest, the trade-off is for raw light-gathering power. The deep 51ke- full well capacity allows for long integration times on faint targets without saturating brighter stars in the same field, preserving a wide dynamic range in a single exposure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e58 FPS High-Speed Capture with a 128MB DDR2 Buffer\u003c\/h3\u003e\n\u003cp\u003eThe QHY1920 captures full-resolution 1920x1200 frames at 58 FPS, available in both 8-bit and 16-bit depths. This speed is critical for scientific imaging, solar work, or any application that benefits from \"freezing\" atmospheric turbulence. An electronic rolling shutter allows for short exposures down to 15µs, though it may introduce artifacts on extremely fast-moving terrestrial objects.\u003c\/p\u003e\n\u003cp\u003eTo ensure data integrity at these high speeds, the camera includes a 128MB DDR2 memory buffer. This onboard cache prevents frame drops by managing the data flow between the sensor and the host computer, a crucial feature for time-series photometry or lucky imaging sequences where every frame counts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRegulated Cooling to -32°C Below Ambient for Stable Low-Noise Imaging\u003c\/h3\u003e\n\u003cp\u003eFor long-exposure applications, thermal noise is the primary limiting factor. The QHY1920 incorporates a powerful dual-stage thermoelectric cooler (TEC) capable of reducing the sensor temperature to -32°C below the ambient air temperature. This aggressive cooling drops the dark current to just 0.055e-\/pixel\/sec when the sensor is at -20℃, enabling clean, multi-minute exposures.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Dew Heater:\u003c\/strong\u003e An integrated heater on the optical window prevents frost or dew from forming during humid nights, ensuring a clear optical path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity Sensor:\u003c\/strong\u003e A built-in sensor monitors the humidity inside the sealed sensor chamber, providing an early warning against potential moisture issues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFlexible Integration: 15mm Back Focus and Multiple Adapter Options\u003c\/h3\u003e\n\u003cp\u003eWeighing 705g, the QHY1920 is built for robust integration into complex imaging trains. It features a precise 15mm back focal length, making it straightforward to incorporate filter wheels, off-axis guiders, or other accessories while maintaining correct spacing. The camera body supports multiple connection standards, including 2-inch nosepieces, M54, and M48 threads, and can be adapted for use with Nikon or Canon DSLR lenses.\u003c\/p\u003e\n\u003cp\u003eConnectivity includes a high-speed USB3.0 port for image data transfer and a dedicated 4-pin QHYCCD port for controlling accessories like the QHY CFW series of filter wheels directly from the camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the QHY1920's large 12µm pixels perform for spectroscopy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe large 12µm pixels are a significant advantage for spectroscopy. They offer high sensitivity and a large charge capacity (51ke-), allowing you to capture faint spectral lines without saturation. The sensor's good near-infrared (NIR) response is also beneficial for analyzing the spectral signatures of cooler stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the QHY1920's 58 FPS fast enough for solar imaging in H-alpha?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, 58 FPS is an excellent frame rate for solar imaging. It allows you to capture thousands of frames in a short period, enabling lucky imaging techniques to overcome atmospheric seeing and resolve fine details like spicules and granulation on the Sun's surface. The 128MB buffer ensures none of these critical frames are dropped.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the 128MB DDR2 buffer in the QHY1920?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 128MB DDR2 buffer acts as a temporary storage space for image data before it's sent to your computer via USB3.0. This prevents data bottlenecks and dropped frames, which can occur if the host computer is temporarily busy with other tasks. It guarantees a stable and reliable image stream, which is essential for scientific measurements and video astronomy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the regulated cooling on the QHY1920 help with long exposures?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dual-stage TEC cooler reduces the sensor's temperature by up to -32°C below ambient. This dramatically lowers thermal noise, or dark current, which accumulates during long exposures. With a dark current of just \u003cstrong\u003e0.055e-\/pixel\/sec at -20℃\u003c\/strong\u003e, the QHY1920 can take clean, multi-minute exposures with a much higher signal-to-noise ratio than an uncooled camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 0.74e- read noise of the QHY1920 mean for my images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eRead noise is the inherent electronic noise introduced each time the sensor is read out. At just \u003cstrong\u003e0.74 electrons\u003c\/strong\u003e, the QHY1920's read noise is exceptionally low. This means that for very faint targets or short exposures, the camera's own noise floor is minimal, allowing the faint signal from your target to be clearly distinguished.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of optical systems are compatible with the QHY1920's 15mm back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 15mm back focus is a relatively short distance, making the QHY1920 easy to integrate into various setups. It works well with filter wheels and off-axis guiders that require minimal back focus. With the appropriate adapters, it can connect to standard 2-inch focusers, M54 and M48 threaded correctors, and even photographic lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eBSI (Back-Side Illuminated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e12µm x 12µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective Pixels\u003c\/td\u003e\n\u003ctd\u003e2.3 Megapixels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e1920 x 1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective Image Area\u003c\/td\u003e\n\u003ctd\u003e23mm x 14.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC\u003c\/td\u003e\n\u003ctd\u003e12-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eElectronic Rolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Time Range\u003c\/td\u003e\n\u003ctd\u003e15µs - 300sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e51,000e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e0.74e- to 8.2e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDark Current\u003c\/td\u003e\n\u003ctd\u003e0.055e-\/pixel\/sec @ -20℃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e58 FPS @ 1920x1200 (8-bit \u0026amp; 16-bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Buffer\u003c\/td\u003e\n\u003ctd\u003e128MB DDR2 Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling System\u003c\/td\u003e\n\u003ctd\u003eDual-Stage TEC, -32°C below ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnti-Dew System\u003c\/td\u003e\n\u003ctd\u003eIntegrated Optical Window Heater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Sensor\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Interface\u003c\/td\u003e\n\u003ctd\u003eUSB3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Port\u003c\/td\u003e\n\u003ctd\u003e4-pin QHYCCD CFW Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Window\u003c\/td\u003e\n\u003ctd\u003eAR+AR Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focal Length\u003c\/td\u003e\n\u003ctd\u003e15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e705g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e34W (100% TEC), 15W (50% TEC), 3W (TEC Off)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirmware Upgrade\u003c\/td\u003e\n\u003ctd\u003eSupported via USB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.qhyccd.com\/download\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":52942988640541,"sku":"QHY-110129","price":9800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/QHYCCD-QHY1920-1_e64e4d42-c37a-44c0-a4c2-2ff434cc3fc0.jpg?v=1789614924","url":"https:\/\/davidastro.com\/fr-us\/products\/qhyccd-qhy1920","provider":"David Astro","version":"1.0","type":"link"}