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QHY2020 Scientific Cooled CMOS Camera
- Back Illuminated cooled Scientific CMOS Camera uses a GSENSE2020BSI image sensor with 4MP resolution and 6.5μm pixel size, Class 1
- With peak Quantum Efficiency of 94%
- Ultra-Low Read Noise of 1.6e-
- Low Dark Current and High Frame Rate
- With Electronic Rolling Shutter, Sensor free of Microlenses
- Two-stage Thermoelectric Ccooling (TE) and USB3.0 interface
- Dual 12-bit A/D, High Dynamic Range, Dual Image Output
- Ideal camera for astronomical and biological imaging as well as spectroscopy
Description
QHY2020 supports 21 5FPS,25,35FPS frame rate and HDR two channel output. It has the capability to output dual channels as 4096 x 2048 with one channel at high gain and one channel at low gain. You can also select either the high gain or low gain output.
With read noise as low as 1.6e-, this camera can capture photons from very dim objects. At 3.5 electrons it can achieve SNR=2, which means 4 photons. This detection limit is close to some EMCCD cameras.
The standard version of the QHY2020 is USB3.0. It can produce a maximum frame rate of 33 frames per second for single channel 12bit images, or 21.5 frames per second for dual channel 12-bit images (HDR mode). The camera can also transfer selected regions of interest for extremely fast rates, e.g., 450 FPS at 128lines, 1460 FPS at 32 lines. This specially addressed line readout mode can also be customized.
| Model | QHY2020 / QHY2020EUVX |
| CMOS Sensor | Gpixel Gense2020 BSI / Gesen2020 BSI-PS |
| Pixel Size | 6.5um x 6.5um |
| Sensor Surface Glass | Clear Glass / Non-Glass |
| Effective Pixel Area | 2048 x 2048 |
| Effective Pixels | 4 Megapixels |
| Effective Image Area | 13.3mm x 13.3mm |
| Fullwell | 56ke- |
| AD Sample Depth | Dual 12-bit A/D (High Gain Channel and Low Gain Channel) * |
| QE | QHY2020 94% peak QE. 60% @ 800nm 38% @ 900nm 60% @ 240nm QHY2020EUVX 90% to 99% at 1.2nm to 15nm 35% @ 200nm 68% @ 600-700nm 50% @800nm 40%@900nm |
| Full Frame Rate and ROI Frame Rate | Full Frame Rate
(Clock 3， STD mode, 12bit, DDR ON) 2048*2048 32.5FPS (Clock 1， HDR mode, 2*12bit, DDR ON) 4096*2048 21.5FPS Hardware ROI Frame Rate * (Clock 3， STD mode, 12bit, DDR ON) (Clock 1， HDR mode, 2*12bit, DDR ON) 2048 Lines 21.5FPS (eg. 2048*2*2048) *note: Hardware ROI support need upgrade the MAX10 FPGA codes. (>=V2020.3.18) and Need the System Driver >=2020.3.14 and SDK>=2020.3.14 |
| Readout Noise | 1.6e- |
| Dark Current | TBD |
| Exposure Time Range | 20us – 300sec |
| Shutter Type | Electric Rolling Shutter |
| Computer Interface | USB3.0 |
| Built-in Image Buffer | 128MByte (512Mb) DDR2 |
| Cooling System | Dual Stage TE Cooler（-40C below ambient）
(Test temperature +20°) |
| Anti-Dew Heater | Yes |
| Telescope Interface | M54/0.75 female thread on the fast installer/center adjust ring |
| Optic Window Type | AR+AR High Quality Multi-Layer Anti-Reflection Coating |
| Back Focal Length | 16mm（±0.5） |
| Weigth | 750g |
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