Overview
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.
Specifications
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
