فروشگاه تلسکوپ، دوربین عکاسی، ابزارهای رصدی، آسمان نما، رصدخانه، مناسب دانشآموزان و دانشجویان، بهترین قیمتها، ارزان و حرفهای، به همراه مشاوره و راهنمایی پیش و پس از خرید.
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QHY990/QHY991 SWIR
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اطلاعات بیشتر
Both QHY990 and QHY991 include a 25mm filter holder. 25mm filter is a very common filter type for lab applications. The SWIR filter is easy to be installed inside the camera. With this adapter, the camera still meets the 17.5mm C-mount B.F.L.
QHY990 and QHY991 have both air cooling and liquid cooling version. The air cooling can get the -35C below ambient. The liquid cooling version can get -45C below ambient with normal temperature liquid and can get -60 to -80C below ambient with cold liquid. Typically the InGaAs sensor has a high dark current than Silicon-based material. If you are doing the long exposure with this camera (eg. exposure >5 sec) QHYCCD recommends selecting the liquid cooling version.
Applications: SWIR Astronomy Imaging and Photometry, Daytime Star Observing, Optical Communication, Laser, Optic Labs.
| Model | QHY990 | QHY991 |
| CMOS Sensor | IMX990 SWIR Sensor | IMX991 SWIR Sensor |
| FPA Material | InGaAs | |
| Pixel Size | 5.0um*5.0um | |
| Total Pixels (includes optic black pixels) | 1392*1052 | 752*520 |
| Effective Pixel Area | 1296*1032 | 656*520 |
| Effective Pixels | 1.3 Megapixels | 0.4 Megapixels |
| Effective Image Area | 1/2 inch | 1/4 inch |
| AD Sample Depth | 12-bit A/D | |
| Shutter Type | Electric Global Shutter | |
| QE | 77% @ 1200nm | |
| Full Well | Typical 120ke | |
| Readout Noise | The measured data is after Bias Frame FPN calibration Typical 150 e- at lowest gain | |
| Frame Rate | 66FPS@Full Resolution 12bit 137FPS@480Line 12bit | 133FPS @ Full resolution 12bit 254FPS @ 240Line 12bit |
| Trig Function | One Hardware Trig-In Socket (RCA type).Opto-isolated | |
| Computer Interface | USB3.0 | |
| Lens Interface | C-Mount | |
| Telescope Interface | 1.25inch Adapter | |
| Basic Interface | Flange with 6-M3 screw holes | |
| 25mm Filter Adapter | Support D=25mm and D=25.4mm filter | |
| Back Focal Length | C_Mount,1.25inch adapter 17.5mm with 25mm filter adapter, 14.5mm without filter adapter Basic Interface 12.5mm | |
| Cooling System | Dual Stage TE Cooler Air Cooling version (Test temperature +20°) Liquid Cooling version | |
| Recommended flow rates for water-cooled versions | 1.6ml/s | |
QHY990 Sample Image in daytime. With 16mmF1.4 SWIR lens @F2.8 , 1200-1800nm filter. Gain=0, exposure time = 1.3ms. D0wnload 16bit FITs QHY990_DAYTIMEQHY990_DAYTIME
QHY990 Sample image under sky (at night). . With 16mmF1.4 SWIR lens @F1.4 , 1200-1800nm filter. Exposure = 2sec stack 29frames . -11C sensor temperature. Dark frame calibrated.
Here are the stars in the daytime with QHY991 camera by Martin Miller:
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