{"product_id":"zwo-asi990mm-pro-monochrome-cooled-swir-astro-camera-asi990mm-p","title":"ZWO ASI990MM Pro Monochrome Cooled SWIR Astro Camera - ASI990MM-P","description":"\u003cp\u003eThe ZWO ASI990MM Pro is a SWIR (Short Wave Infrared) camera that uses the 1\/2\" Sony IMX990 InGaAs (Indium Gallium Arsenide) sensor featuring a wide micron range from 0.4um to 1.7 um.   Since this speciality sensor captures short wave infrared light, it is applicable for photometric measurement, optical communication, and work in optical and laser laboratories.  \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWhen compared to the ASI991MM Pro, this camera has a larger sensor and higher resolution, resulting in a bigger field of view when compared on the same telescope.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eSWIR cameras are used in astronomy to observe objects that are cooler or more redshifted than those in visible light as well as objects obscured by dust, etc.\u003c\/p\u003e\n\u003cp\u003eThe ZWO ASI991 SWIR operates in the 400nm to 1800 um wavelength, allowing it to penetrate fog and thin clouds at night or image stars in the daytime.\u003c\/p\u003e\n\u003ch3\u003eZWO ASI99MM Pro SWIR Camera Highlights...\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/ASI990_Icon_Highlights.png?v=1729639010\" style=\"display: block; margin-left: auto; margin-right: auto;\" width=\"763\" height=\"547\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"background-color: rgb(249, 249, 130);\"\u003e\u003cem\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e All ZWO cooled (Pro) cameras will require an external 12V DC power source in order to operate properly and run the TEC cooler. You have three options:\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"background-color: rgb(249, 249, 130);\"\u003e\u003cem\u003e1. Buy a 12V DC Power Supply with a minimum of 3 amps; we recommend the ZWO power supply listed at the end of this page.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"background-color: rgb(249, 249, 130);\"\u003e\u003cem\u003e2. Buy the ASIAir and use the DC Out port to run your camera.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"background-color: rgb(249, 249, 130);\"\u003e\u003cem\u003e3. Buy an external 12V DC battery like the Celestron PowerTank or equivalent.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eIt is important to know that your computer may not recognize your camera or operate correctly if you just use the USB 3.0 cable alone. You will want to connect whichever 12V DC power source you choose into your computer as well.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eZero Amp Glow\u003c\/h3\u003e\n\u003cp\u003eTraditional CMOS sensors produce a weak infrared light source during operation which is quite often seen in the corner of uncalibrated images as tell-tale signs of amp glow.  You won't have to worry about amp glow with the ASI990MC Pro, even when using high gain during long exposure images, however, as ZWO uses zero amp glow circuitry.\u003c\/p\u003e\n\u003ch3\u003eReadout Noise\u003c\/h3\u003e\n\u003cp\u003eReadout noise is generated in the amplifier on the chip that converts the stored charge of each pixel into an analog voltage to be quantified by A\/D conversion.  The lower the readout noise is, the better the image SNR.  Compared to traditional CCD SWIR cameras, the ASI990MM Pro keeps its readout noise at a really low level.\u003c\/p\u003e\n\u003ch3\u003eTwo-Stage Cooling\u003c\/h3\u003e\n\u003cp\u003eWith its built-in two stage TEC cooling, the ASI990MM Pro can lower the sensor temperature to 30-35 degrees Celsius below ambient temperature, greatly reducing dark current generation and sensor noise.  \u003c\/p\u003e\n\u003cp\u003eIt is recommended that you use this camera at low temperatures to get better imaging performance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/ASI991_WITB.webp?v=1729637914\" width=\"682\" height=\"633\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003eSensor:  Sony IMX990 InGaAs\u003c\/p\u003e\n\u003cp\u003eSensor Size:  6.4mm x 5.12mm, 1\/2\"\u003c\/p\u003e\n\u003cp\u003eResolution:  1280 x 1024\u003c\/p\u003e\n\u003cp\u003ePixel Size:  5um\u003c\/p\u003e\n\u003cp\u003eADC:  12-bit\u003c\/p\u003e\n\u003cp\u003eRead Noise:  21.27e\u003c\/p\u003e\n\u003cp\u003eCooling Temperature:  35ºC\u003c\/p\u003e\n\u003cp\u003eDDR3 Buffer:  256MB\u003c\/p\u003e\n\u003cp\u003eTransmission Interface:  USB 3.0\u003c\/p\u003e\n\u003cp\u003eFrames Per Second:  31.9\u003c\/p\u003e\n\u003cp\u003eFull Well:  127ke\u003c\/p\u003e\n\u003cp\u003eQuantum Efficiency:  80%\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":41437091922033,"sku":"ZWO-ASI990MM-P","price":15094.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/990-Hero.webp?v=1776459008","url":"https:\/\/khanscope.com\/en-fr\/products\/zwo-asi990mm-pro-monochrome-cooled-swir-astro-camera-asi990mm-p","provider":"Khan Scope Centre","version":"1.0","type":"link"}