TO EXPLORE THE UNKNOWN UNIVERSE
California Dreamin' NGC1499
- CAMERA QHY600M
- SCOPE Takahashi FSQ-130
Mounts: Paramount ME
Filters: Chroma Ha 5nm, OIII 5nm, SII 5nm
Integration: 11.6h
Photoed BY.
Terry Hancock（US）
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QHY2020
QHY2020 is a cooled scientific CMOS camera with GSENSE2020 back illuminated CMOS sensor: 13.3mm x 13.3mm, 2K*2K resolution, 4mega pixels. This square scientific CMOS has ultra high QE and wide spectral response from 200nm to 1100nm. It has 94% peak QE at 550nm-600nm, 60% QE at 240nm. It also has very good QE in the NIR range, 60% at 800nm, 38% at 900nm. QHY2020EUVX is a special EUV/Soft X-ray enhanced version with >90% QE in 1.2nm to 15nm extreme UV range. The high, wide response from NIR to UV makes the QHY2020 a perfect camera for spectrum analysis and spectrum imaging systems. The QHY2020 is also an ideal scientific CMOS camera for Fluorescence imaging .
*Please contact QHYCCD about the price.
Overview
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.
Please contact QHYCCD for order if you want to purchase, consult or customize scientific cameras.
Specifications
| 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） |
| 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 |
Curves
Dual ADC Image Out
GSENSE2020BSI has a dual ADC structure. The two ADCs will sample the same signal at the same time and generate two images. One image has low gain, big dynamic, another image has high gain, low readout noise. With this configuration, it can be used to generate the HDR image to enhance the dynamic range. QHY2020 can output the two-channel at the same time. The following picture is the dual ADC output images generated by QHY2020. The left is the low gain channel and the right is the high gain channel.Its resolution is 4096*2048 which consists of two 2048*2048 images. QHY2020 can also output the single high gain 12bit channel or the low gain 12bit channel with 2048*2048 resolution. These modes can be switched by the “ReadMode” options.
Dark Frames
The following picture is a dark frame of 60sec exposure, @ -20C sensor temperature. You will see a little ampilifer glow on the corner of the image. But it should be easy to be removed with dark frame calibration. Please note this is a CLASS 2 sensor. So you will see a defect row in this image. QHY2020 has both Class 1 sensor version and Class 2 sensor version. The price is different.
https://www.qhyccd.com/uploadfile/2019/0106/20190106010501406.zip
The following picture is a 10sec exposure dark frame under -20C degree cooling, with background level stretch. Class 2 sensor.
