The QHY21, QHY22 and QHY23 cameras use Sony's high-sensitivity EXview HAD CCD II sensors, ICX674, ICX694 and ICX814, respectively.  These sensors have very high QE (close to 80%) and very low thermal noise.  QHYCCD's dual stage TE cooling technology reduce the sensor temperature up to -45C below ambient for exceptionally low dark current.  Compared to competing models, the QHY cameras achieve -10C to -15C extra cooling, resulting in very low noise and uniform background even during the hot summer months. 

The read noise of these cameras is also a highlight of their performance.  Typical read noise is around 5 electrons. Low read noise is very important when you want to capture faint deep sky objects or when using narrowband filters.  Less read noise also means you can get a better image when you stack multiple frames.  These Sony sensors all have relatively small pixels for high resolution.  Using a suitable OTA results in outstanding detail as the sample images at the bottom of this page show.

The QHY21, 22 and 23 offer full moisture control, including an air-proof CCD chamber with silicon gel tube socket and a CCD chamber optical window heater.  Mechanically, the QHY21, 22 and 23 are solidly built and include a USB/Power cable support.  With this support, the USB and power cable will stay solidly affixed to the camera assuring a constant electrical contact. 

QHY22 Test Image by Jaime Alemany
Horsehead 7 hours H-a (7nm) by Jaime Alemany. No dark, No flat, No bias
The Items Included in Standard Package

1.QHY21/QHY22/QHY23 camera
2.DC201
3.USB cable
4.Silicon gel tube
5.Silicon gel
6.Cigar lighter cable
7.C-mout
8.9-pin cable
9.Cable fixer
Copyright 2002-2015 QHYCCD
The difference of QHY21  QHY22  QHY23

QHY21
QHY22
QHY23
CCD sensor
ICX674
ICX694
ICX814
Pixel Size
4.54 x 4.54um
4.54 x 4.54um
3.69 x 3.69um
Total Pixel Array Size
2020 x 1476
2838 x 2224
3468*2728
Effective Pixel Array Size
1940*1460
2758*2208
3388 x 2712
Effective Pixels
2.8 Megapixels
6.1 Megapixels
9.2 Megapixels
Chip Size
10.7 x 9.2mm
14.6 x 12.8mm

Effective Area
appox 8.8*6.6mm
appox 12.5*10mm
appox 12.5*10mm
Typical Size
2/3inch
1inch
1inch
Weight
516g
516g-
516g-




EN    |   中文
QHY21/22/23 Specifications
CCD Readout Type
Progressive Scan
Full Well
15Ke- to 20Ke-
Peak QE
79% @550nm  >60%@Ha   70%@450nm
ABG
-105DB
Download Speed
1.25 Megapixels/sec
Preview binned 4x4
4.4 Megapixels
Readout noise
5e- (Typical @1.25 Mpixel/s)
Support Binning
1x1, 2x2, 4x4
System Gain
0.25 to 0.3 e-/ADU
ADC
16-bit
Colorwheel Communcation port
4-PIN
2-Stage TEC cooling
-45C from ambinet
Weight
470g (not inluding the C-mount)
Size
D=77mm  Length=83mm
Optic window Anti-drew heater
Builtin
Power consumption
12VDC
3.5W (Zero Cooling), 12.8W (50% Cooling),
25.8W (100% Coolling).
Both Mono and Color Sensors Available
Airproof CCD chamber with removable silicon tube socket
Driver and Software Download
QHY21 Driver
QHY22 Driver
QHY23 Driver
EZCAP

ASCOM Platform
N/A
QHY21 ASCOM Capture
QHY22 ASCOM Capture
QHY23 ASCOM Capture
ASCOM Filters Plug
Standby Download

Document Download
Manual
FAQ


Others








CUSTOM Aadpters for QHY21/22/23
QHYCCD recommends our partner, PreciseParts for ordering custom-made adapters for QHY21/22/23 and other cameras.