QHYCCD QHY990 Manual

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
CMOS Sensor
FPA Material
Pixel Size
Total Pixels
(includes optic black
pixels)
Effective Pixel Area
Effective Pixels
Effective Image Area
AD Sample Depth
Shutter Type
QE
Full Well
QHY990
IMX990 SWIR Sensor
InGaAs
5.0um*5.0um
1392*1052
1296*1032
1.3 Megapixels
1/2 inch
12-bit A/D
Electric Global Shutter
77% @ 1200nm
Typical 120ke
QHY991
IMX991 SWIR Sensor
752*520
656*520
0.4 Megapixels
1/4 inch