{"product_id":"zwo-asi533mm-pro-mono-used","title":"ZWO ASI533MM Pro Mono - Used","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e9.0MP 1-inch square back-illuminated Sony IMX533 monochrome sensor\u003c\/li\u003e\n\u003cli\u003e3008 x 3008 resolution with 3.76µm pixels\u003c\/li\u003e\n\u003cli\u003ePeak quantum efficiency of 91%\u003c\/li\u003e\n\u003cli\u003e14-bit ADC and 50,000e full well capacity\u003c\/li\u003e\n\u003cli\u003eZero amp glow and ultra-low 1.0e read noise\u003c\/li\u003e\n\u003cli\u003eTwo-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\u003eZWO ASI533MM Pro Mono - Used\u003c\/h2\u003e\n\u003cp\u003eStep into high-performance narrowband and LRGB imaging with this used ZWO ASI533MM Pro. This camera's 9.0MP back-illuminated Sony IMX533 monochrome sensor features a square 3008x3008 format and 3.76µm pixels, a perfect match for a wide range of telescopes. Without a color filter array, every pixel records light at full resolution, and the sensor reaches a peak quantum efficiency of 91%. Its 14-bit ADC delivers a deep dynamic range, while the 50,000e full well capacity keeps bright stars from saturating. With regulated two-stage cooling that reaches 35°C below ambient, ultra-low 1.0e read noise, and absolutely zero amp glow, this camera produces exceptionally clean and detailed images. This pre-owned model offers significant value, making dedicated mono imaging accessible for astrophotographers ready to step up from a one-shot color camera.\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\u003eSony IMX533 Mono Sensor: 91% QE and Zero Glow\u003c\/h3\u003e\n\u003cp\u003eThe heart of the ASI533MM Pro is its 1-inch square Sony IMX533 monochrome sensor, which provides a 9.0 megapixel, 3008 x 3008 pixel array. Because there is no Bayer matrix, all pixels contribute to every exposure, whether you are shooting luminance, RGB or narrowband. This back-illuminated CMOS chip reaches a peak Quantum Efficiency of 91%, giving it outstanding sensitivity to faint nebulae and galaxies. A signature feature of this sensor is its complete absence of amp glow, an artifact that plagues many other CMOS cameras during long exposures. This results in cleaner raw data that is far easier to process, saving you time and preserving the dynamic range of your images across the entire frame.\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\u003eBuilt for Narrowband and LRGB Imaging\u003c\/h3\u003e\n\u003cp\u003eA monochrome camera paired with filters gives you full control over your data. Hydrogen-alpha, OIII and SII filters isolate specific emission lines, letting you capture nebulae in rich detail even under light-polluted skies or a bright Moon. Combined in the Hubble palette or in HOO, these channels reveal structures that a color camera struggles to record. For galaxies, star clusters and reflection nebulae, LRGB imaging gives you a high-resolution luminance channel with accurate color from dedicated red, green and blue filters.\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\u003eDeep Cooling \u0026amp; Low Noise Performance Down to 1.0e\u003c\/h3\u003e\n\u003cp\u003eThermal noise is the enemy of long-exposure astrophotography, especially with narrowband filters where exposures often run several minutes. The ASI533MM Pro integrates a powerful two-stage thermoelectric (TEC) cooling system capable of reducing the sensor's temperature to 35°C below ambient. This deep cooling dramatically lowers dark current, allowing for clean, multi-minute exposures. Paired with an exceptionally low read noise that drops to just 1.0e at higher gain settings, the camera captures faint details with a superb signal-to-noise ratio, revealing delicate structures in your deep-sky targets that would otherwise be lost in the noise.\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\u003e14-Bit ADC, 50k Full Well \u0026amp; 256MB DDR3 Buffer\u003c\/h3\u003e\n\u003cp\u003eThe ASI533MM Pro captures data with a 14-bit Analog-to-Digital Converter (ADC), providing a vast dynamic range to record both the faint wisps of a nebula and the bright cores of galaxies in a single shot. The large 50,000e full well capacity prevents bright stars from bloating or saturating. To ensure reliable data transfer, especially during high-speed planetary imaging at up to 20 FPS, a 256MB DDR3 memory buffer prevents frame drops and maintains a stable connection to your computer via its USB 3.0 interface.\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\u003eA Note on Used Condition\u003c\/h3\u003e\n\u003cp\u003eThis ZWO ASI533MM Pro is a used item and has been fully tested by our team to ensure it meets all original factory specifications for sensor performance, cooling, and data transfer. Cosmetically, the camera body may show minor signs of use, such as small scuffs or marks on the housing that do not affect functionality in any way. The sensor is clean and the package includes all essential accessories to get you started imaging right away.\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\"\u003eShould I choose the mono ASI533MM Pro or the color ASI533MC Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe mono version offers higher sensitivity and full resolution in every channel, and it excels at narrowband imaging, particularly from light-polluted locations. The trade-off is that it requires filters and a filter wheel or filter drawer, and each color channel is captured separately, so a complete image takes more total imaging time and more processing. If you want the simplest setup and full-color images in a single session, the color ASI533MC Pro is the easier choice. If you want the best possible data and plan to image narrowband, the mono version is the better tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat filters and filter wheel do I need for the ASI533MM Pro?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor narrowband imaging you will need Ha, OIII and SII filters, and for broadband color you will need L, R, G and B filters. These are typically mounted in an electronic filter wheel such as the ZWO EFW, which lets you switch filters automatically during the night. The 1-inch sensor has a diagonal of about 16mm, so 1.25\" filters can work at slower focal ratios, but 31mm or 36mm unmounted filters are recommended for fast optical systems to avoid vignetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the ASI533MM Pro's square sensor a good choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 1-inch, 3008x3008 square sensor is highly efficient for framing many deep-sky objects, which are often circular or symmetrical, like globular clusters (M13), planetary nebulae (M57), and many galaxies (M51). It simplifies framing since you don't have to worry about camera rotation to fit your target, and it makes creating mosaics more straightforward. It's an excellent match for telescopes with a well-corrected image circle of 16mm or more.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the ASI533MM Pro perform in a light-polluted area like my backyard?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eVery well, especially with narrowband filters. Filters with a narrow bandwidth, such as 7nm or narrower, pass the emission lines of nebulae while blocking most of the light pollution. Combined with the camera's 91% peak QE and low read noise, this makes it possible to capture detailed images of emission nebulae like the Orion Nebula (M42), the Heart Nebula (IC 1805) or the Veil Nebula even from a city environment or under a bright Moon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the ASI533MM Pro good for imaging planets as well as deep-sky objects?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While its deep cooling and low noise are ideal for deep-sky objects, the ASI533MM Pro can also capture high-resolution lunar, solar and planetary images. It can achieve a maximum frame rate of 20 FPS at full resolution, and using a smaller Region of Interest (ROI) dramatically increases this frame rate, which is the key to \"lucky imaging\" techniques used to freeze atmospheric turbulence. The mono sensor is well suited to lunar imaging and to solar imaging with an H-alpha telescope, and planetary color images can be produced with RGB filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply do I need for the ASI533MM Pro's cooling system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo power the two-stage TEC cooler, you will need an external \u003cstrong\u003e12V DC power supply capable of delivering at least 3A\u003c\/strong\u003e. The camera's electronics can be powered by the USB 3.0 connection alone, but the cooling system requires this separate power source. A power supply is not typically included with a used camera, so ensure you have one available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the 6.5mm and 17.5mm back focus options let me do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dual back focus distances provide flexibility for connecting different accessories. The \u003cstrong\u003e17.5mm\u003c\/strong\u003e distance is standard when using the included M42 extensions and is designed to easily achieve the common 55mm back focus required by most flatteners and correctors. The \u003cstrong\u003e6.5mm\u003c\/strong\u003e distance, accessed by removing the main extension ring, is useful for custom imaging trains, especially those involving filter wheels or off-axis guiders that require a shorter camera body to reach the correct spacing.\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\u003c\/td\u003e\n\u003ctd\u003e1\" Sony IMX533 CMOS (Monochrome)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e9.0MP (3008 x 3008)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePixel Size\u003c\/td\u003e\n\u003ctd\u003e3.76µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Area\u003c\/td\u003e\n\u003ctd\u003e11.31mm x 11.31mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Diagonal\u003c\/td\u003e\n\u003ctd\u003e15.97mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantum Efficiency (Peak)\u003c\/td\u003e\n\u003ctd\u003e91%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Well Capacity\u003c\/td\u003e\n\u003ctd\u003e50,000e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead Noise\u003c\/td\u003e\n\u003ctd\u003e1.0e to 3.8e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC\u003c\/td\u003e\n\u003ctd\u003e14-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling System\u003c\/td\u003e\n\u003ctd\u003eTwo-Stage Regulated TEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Delta T\u003c\/td\u003e\n\u003ctd\u003e35°C below ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Frame Rate\u003c\/td\u003e\n\u003ctd\u003e20 FPS at full resolution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Buffer\u003c\/td\u003e\n\u003ctd\u003e256MB DDR3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutter Type\u003c\/td\u003e\n\u003ctd\u003eRolling Shutter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExposure Range\u003c\/td\u003e\n\u003ctd\u003e32µs - 2000s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eUSB 3.0 \/ USB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus\u003c\/td\u003e\n\u003ctd\u003e17.5mm \/ 6.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Diameter\u003c\/td\u003e\n\u003ctd\u003e78mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e470g\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\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUsed ZWO ASI533MM Pro Camera Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePadded Camera Bag\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 3.0 Cable (2m)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 2.0 Cables (0.5m)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Nosepiece\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" Cap\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM42-M48 Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM42 Extender (21mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM48-M42 Adapter (16.5mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSpacers\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 4\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuick Guide\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\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.zwoastro.com\/software\/\" 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\u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO 2-Year Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":53020246540573,"sku":"U-BEG-ZWO-ASI533MM-P","price":949.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/IMG_7759.heic?v=1790282545","url":"https:\/\/davidastro.com\/products\/zwo-asi533mm-pro-mono-used","provider":"David Astro","version":"1.0","type":"link"}