• The QHY183M includes the 20 megapixel Sony IMX183 monochrome CMOS Exmor R sensor.
• The Exmor R is a back-illuminated sensor that retains the advantages of CMOS high-speed operation but uses back-illumination technology for super low readout noise and high quantum efficiency.
• The QHY193M offers a QE of 84% and readout noise as low as 1 electron!
• The 1" sensor has an image array of 5544 x 3694 active pixels that are 2.4um in size for high resolution results even with smaller telescopes.
• A two-stage TEC regulated cooling system cools the sensor to -40C to -45C below ambient temperature.
• Other features include a 128MB DDR Memory Buffer for stable and reliable data transfer, a heated optical window and desiccant plug socket to help control dew and moisture, and the use of Anti-Amp Glow technology to keep CMOS amplifier glow to a minimum.

• CMOS Sensor: Sony IMX183 Back Illuminated Sensor
• Color or Monochrome: Monochrome
• Effective Pixels: 5544 x 3694
• Pixel Size: 2.4um x 2.4um
• Effective Area: 13.3mm x 8.9mm
• Shutter: Electric Rolling Shutter
• Full Well Capacity: 15,000 - 16000e
• Readout Noise: 1e@high gain, 2.7e@low gain
• Dark Current: 0.0024e-/p/s@-15C
• Frame Rate:
• 15 FPS @ 20 MP (full resolution)
• 25 FPS @ 4K HD Video
• 25 FPS @ 12 MP
• ROI Support: Yes. Any Area ROI
• Exposure Time: 50us-3600sec
• AD Sample Depth: 10bit/12bit (8bit/16bit output, MSB Alignment)
• On Camera Image Buffer: Yes, 128MB DDRII Buffer
• Cooling: 2-stage TEC, Typical -40 below Ambient, Temperature Regulated
• Power: USB Powered for camera and +12V powered for TEC
• Anti Dew Control: Air Connector for removable silicon gel tube. Heat board for optic window of sealed CCD chamber
• Computer Interface: USB3.0 Super Speed
• Telescope Interface: M42/0.75 & 2inch adapter. Optional C-mount adapter
• Color Wheel Port: 4PIN QHYCFW2 socket
• Guide Port: 6PIN RJ11 Guide Port
• Optic Window: AR+AR
• Weight: 450g/15.87 ounces
• Electric Interface: 12V input with lock, USB3.0 socket, 4PIN QHYCFW, 6PIN RJ11

QHY183 COLDMOS CAMERA SPECIFICATION
Model	QHY183M(Monochrom) QHY183C(Color)
CMOS Sensor	SONY IMX183 BSI CMOS
AR Coating On Sensor	Yes
Pixel Size	2.4um*2.4um
Effective Pixel Area	5544*3694
Effective Pixels	20 mega
Effective Image Area	13.3mm*8.87mm
Fullwell	15.5ke-
Peak QE	84% (Monochrome)
AD Sample Depth	12bit (output as 16bit and 8bit)
Sensor Size	Typical 1 inch
Max Full Frame Rate and ROI Frame Rate	5544*3864 Full Resolution 19FPS@8BIT    7.5FPS@12BIT 4096*2160 4K HD Video  31FPS@8BIT       12FPS@12BIT* 1920*1080 HD Video       60FPS@8BIT        24FPS@12BIT* 800*600 SVGA                 106FPS@8BIT      42FPS@12BIT* 640*480  VGA                   130FPS@8BIT      53FPS@12BIT* And more resolutions (Support any region ROI) *Note: The 16bit ROI for above 7.5FPS requires the QHYCCD SDK (qhyccd.dll) version 2019.2.27 or later. The old SDK only support 7.5FPS fixed frame rate. You can go to https://www.qhyccd.com/index.php?m=content&c=index&a=show&catid=127&id=162 to obtain the lastest SDK.
Readout Noise	2.7e-@lowest gain   1.0e@high gain
Dark Current	0.0024e/pixel/sec @ -15C
Exposure Time Range	50us-3600sec
Anti-Glow Control	Yes
Shutter Type	Electric Rolling Shutter
Computer Interface	USB3.0
Built-in Image Buffer	128MByte DDR2 memory
Non-volatile memory / On camera storage	Build-in total 512Kbytes Flash Memory. 100Kbytes user-accessible space for stellar ROI frames for analysis of exoplanet investigation, occultations, atmospheric seeing messurement, focus , optic analysis etc. Support 100*100 image x 10rames   50*50 image x40frames. 25*25 image x160frames 10*10 image * 1000 frames （total frame numbers is based on 8bit image）
Cooling System	Dual Stage TEC cooler (-40C below ambient）
Anti-Dew Heater	Yes
Telescope Interface	M42/0.75
Optic Window Type	QHY183M: AR+AR High Quality Multi-Layer Anti-Reflection Coating  QHY183C: IR cut filter
Back Focal Length	see the setup combination table in the bottom of this page
Weigth	650g