{"product_id":"qhyccd-qhy4040-pro-i-bsi","title":"QHYCCD QHY4040 Pro I BSI Scientific CMOS Camera","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e16.8 Megapixel Gpixel GSENSE4040 BSI CMOS Sensor\u003c\/li\u003e\n\u003cli\u003e4096 x 4096 Resolution with 9.0µm Pixels\u003c\/li\u003e\n\u003cli\u003e36.9mm x 36.9mm Square Image Area\u003c\/li\u003e\n\u003cli\u003eDual 10-Gigabit Fiber and USB 3.0 Interfaces\u003c\/li\u003e\n\u003cli\u003e2GB DDR3 Image Buffer\u003c\/li\u003e\n\u003cli\u003eRegulated 2-Stage TEC Cooling to -35°C Below Ambient\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\u003eQHY4040 Pro I BSI Scientific CMOS Camera\u003c\/h2\u003e\n\u003cp\u003eThe QHY4040 PRO I BSI is engineered for demanding scientific applications, built around a 16.8 Megapixel Gpixel GSENSE4040 back-illuminated sensor with large 9.0µm pixels on a square 36.9mm x 36.9mm array. This BSI variant achieves a low typical read noise of 2.3e- and a full well capacity of 36,000e-. A dual-stage TEC system provides regulated cooling to -35°C below ambient, and data is managed by a 2GB DDR3 buffer and transferred through dual 10-Gigabit fiber optic interfaces.\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\u003eGSENSE4040 BSI Sensor: 16.8 Megapixels on a 36.9mm Square Array\u003c\/h3\u003e\n\u003cp\u003eAt the core of the QHY4040 Pro is the Gpixel GSENSE4040, a large-format monochrome sensor ideal for scientific survey work, spectroscopy, and wide-field imaging. The 4096 x 4096 pixel array and 36.9mm x 36.9mm physical area provide an expansive field of view, while the 9.0µm pixels deliver a balance of high resolution and excellent light-gathering capacity. This BSI version is particularly sensitive, with a low read noise of just 2.3e-, ensuring that faint signals are not lost in the noise floor.\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\u003ePrecision Timing: Hardware Triggering and Multi-Mode Control\u003c\/h3\u003e\n\u003cp\u003eThe QHY4040 Pro is designed for time-domain science where precise temporal data is critical. It features a hardware exposure ending signal output that can be synchronized with an external timing base like GPS for high-precision timestamps on every frame. The camera supports multiple acquisition modes including continuous live video, single-frame, and burst mode, giving you complete control over the capture sequence for applications like photometry of transient events or satellite tracking.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 12-bit ADC:\u003c\/strong\u003e The camera offers selectable high and low gain channels from its dual 12-bit ADCs. You can also select an in-camera mode that combines the dual 12-bit outputs into a single 16-bit image for maximum dynamic range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Amplifier Glow:\u003c\/strong\u003e The sensor architecture and electronics are designed to produce zero amplifier glow, ensuring that long exposures are free from this common source of image contamination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurst Mode:\u003c\/strong\u003e Define a specific number of frames for capture upon a single command, ideal for capturing rapid events with precise timing and minimal latency between frames.\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\u003eHigh-Throughput Connectivity: Dual 10-Gigabit Fiber and USB 3.0\u003c\/h3\u003e\n\u003cp\u003eFor applications generating massive data volumes, the QHY4040 Pro includes two 10-Gigabit fiber optic interfaces. This professional-grade connection ensures reliable, high-speed data transfer over long distances, which is essential for remote observatories and data-intensive laboratory work. A USB 3.0 port is also included for standard connectivity, delivering a full-frame rate of 10.0 FPS at 16-bit depth, managed by an internal 2GB DDR3 buffer to prevent dropped frames.\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\u003eStable Thermal Control: -35°C Cooling and Environmental Sensing\u003c\/h3\u003e\n\u003cp\u003eConsistent, low-noise results depend on stable thermal management. The QHY4040 Pro uses a powerful dual-stage thermoelectric cooler capable of reducing the sensor's temperature to 35°C below ambient. This aggressive cooling dramatically reduces thermal noise, with a measured dark current of just 0.16e-\/pixel\/sec at -20°C. For operational reliability, the camera also integrates an anti-dew heater for the optical window and an internal humidity sensor to monitor environmental conditions and prevent condensation.\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\"\u003eWhat applications are best suited for the QHY4040 Pro's square 36.9mm sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe large, square \u003cstrong\u003e36.9mm x 36.9mm\u003c\/strong\u003e format of the QHY4040 Pro is ideal for scientific applications that benefit from a wide, uniformly corrected field of view. This includes astronomical surveys with Ritchey-Chrétien or other flat-field telescopes, spectroscopy, and any application where orienting a rectangular sensor is suboptimal. The \u003cstrong\u003e16.8 Megapixel\u003c\/strong\u003e resolution and \u003cstrong\u003e9.0µm\u003c\/strong\u003e pixels are well-matched to professional instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the QHY4040 Pro's hardware exposure ending signal improve scientific data?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor time-domain astronomy, such as observing asteroid occultations, variable stars, or other transient events, knowing the exact start and end time of an exposure is critical. The QHY4040 Pro's hardware signal provides a precise electrical pulse at the end of each exposure. This signal can be fed into a time-stamping device (like a GPS-based system) to log the timing of each frame with sub-millisecond accuracy, far exceeding what is possible with software-based timing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen would I use the dual 10-Gigabit Fiber interfaces on the QHY4040 Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dual 10-Gigabit Fiber interfaces are designed for professional settings where high-volume, continuous data streaming is required over long distances. This is common in remote observatories, laboratory setups, or industrial imaging where the control computer cannot be located next to the camera. Fiber optics provide immunity to electromagnetic interference and maintain signal integrity, which is a significant advantage over USB for mission-critical applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the QHY4040 Pro's dual 12-bit ADC system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dual 12-bit ADC allows for flexible data acquisition. You can choose to read out from a \u003cstrong\u003ehigh gain channel\u003c\/strong\u003e for the lowest possible read noise on faint targets, or a \u003cstrong\u003elow gain channel\u003c\/strong\u003e to access a larger full well capacity for bright targets. The QHY4040 Pro also offers a mode to combine the data from both channels in-camera, producing a single \u003cstrong\u003e16-bit image\u003c\/strong\u003e with extended dynamic range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 2GB DDR3 buffer on the QHY4040 Pro prevent data loss?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e2GB DDR3 buffer\u003c\/strong\u003e acts as a high-speed temporary storage for image frames as they are read off the sensor. This is especially important during high-speed imaging, as it prevents data loss if the host computer or data connection is temporarily busy. The camera can store multiple full-resolution frames in the buffer, ensuring a smooth and reliable data stream without dropped frames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the QHY4040 Pro suitable for short-exposure \"lucky imaging\" techniques?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. With a minimum exposure time of \u003cstrong\u003e20µs\u003c\/strong\u003e and full-frame rates up to \u003cstrong\u003e13.0 FPS\u003c\/strong\u003e at 8-bit, the QHY4040 Pro can be used for applications that require freezing atmospheric turbulence. While primarily a scientific camera, its speed and low read noise make it a capable tool for high-resolution imaging of bright objects where short, rapid exposures are needed.\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\u003eImage Sensor\u003c\/td\u003e\n\u003ctd\u003eGpixel GSENSE4040 BSI CMOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eMonochrome\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e9.0µm x 9.0µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e4096 x 4096\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective Pixels\u003c\/td\u003e\n\u003ctd\u003e16.8 Megapixels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective Image Area\u003c\/td\u003e\n\u003ctd\u003e36.9mm x 36.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e36,000e- (BSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e2.3e- (Typical, BSI @Gain50)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDark Current\u003c\/td\u003e\n\u003ctd\u003e0.16e-\/pixel\/sec @ -20℃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\/D Converter\u003c\/td\u003e\n\u003ctd\u003eDual 12-bit ADC (with 16-bit combination mode)\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\u003e20µs – 600sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuilt-in Image Buffer\u003c\/td\u003e\n\u003ctd\u003e2GB DDR3 Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate (USB3.0)\u003c\/td\u003e\n\u003ctd\u003e10.0 FPS @ 16-bit | 13.0 FPS @ 8-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Interface\u003c\/td\u003e\n\u003ctd\u003e2x 10-Gigabit Fiber, 1x USB 3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Port\u003c\/td\u003e\n\u003ctd\u003e4x High Speed FPGA Controlled GPIO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Wheel Port\u003c\/td\u003e\n\u003ctd\u003e4-pin QHYCCD CFW Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling System\u003c\/td\u003e\n\u003ctd\u003eDual Stage TEC, -35℃ below ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnti-Dew Heater\u003c\/td\u003e\n\u003ctd\u003eYes\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\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\u003e18mm (±0.5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e40W (100% cooling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 990g\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":52942990606621,"sku":"QHY-110172","price":63000.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/QHYCCD-QHY4040-Pro-Series-1-110172_16e1efd0-b2f8-4f18-a20c-5701caf39b38.jpg?v=1789615008","url":"https:\/\/davidastro.com\/products\/qhyccd-qhy4040-pro-i-bsi","provider":"David Astro","version":"1.0","type":"link"}