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QHY CCD QHY90A w/ OAG, 8.6 Megapixel 4/3 inch astronomy CCD camera with Off Axis Guider



QHY CCD QHY90A w/ OAG, 8.6 Megapixel 4/3 inch astronomy CCD camera with Off Axis Guider
 
The QHY90A/IC90A uses the 4/3inch KAF-8300 CCD sensor so popular in many astronomical CCD cameras.  This camera has a built-in 7-position filter wheel for 36mm unmounted filters for unvignetted fields even at f/2, and a butterfly style even-illumination mechanical shutter for photometric accuracy across the field of view.
 
KAF-8300 - Popular Sensor
The KAF-8300 8.3 Megapixel 4/3 inch mono sensor is used in many astronomy camera models.
 
 
QHY90A Specification
CCD Sensor
KAF-8300 Mono, Standard Grade
Effective Pixels
3358(H) x 2536(V) 8.6mega pixels
Pixel Size
5.4um x 5.4um
Effective Area
17.96mm(H) x 13.52mm(V), Typical 4/3inch
Readout Type
Full Frame CCD, Progressive Scan
FullWell
>25.5ke
Anti-Blooming gate
Yes, 100X
ADC
16-bit
Readout Noise
9 e- Typical
System Gain
0.55 to 0.6 e-/ADU
Binning
1x1,2x2,4x4
Exposure Time
1ms-10000sec
TEC
2-stage
Cooling
-45C Below Ambient, Typical
Shutter
Even-illumination butterfly mechanical shutter
Moisture Control
Air Connector for removable silicon gel tube
Heat board for optical window of airproof CCD chamber
Built-in Filter Wheel
7-position, for 36mm unmounted filters
OAG interface
Six M3 scew holes for QHYOAG
Telescope Interface
M42/0.75 inner screw
Power consumption
0% cooling 8W (12V, 0.7A), 50% cooling 16.5W (12V, 1.4A), 100% cooling 27W (12V, 2.3A)
Weight
1550g
QHY90A Electronic Interface
USB Slave Port x1    USB host port x2    RS232 lemo 3pin port x2   2.1mm 12V DC port x2
 
 
   
"A" Series Camera - Fully Integrated
Both the QHY90A and IC90A belong to QHYCCD new "A" series camera family.  "A" stands for "ALL-IN-ONE".  The cameras include a built-in motor driven filter wheel and they natively support the QHYOAG.  The small size OAG can be installed on the camera solidly with six screws using a minimum of back focus, precious for some optical systems.  The filter wheel in the QHY90A/IC90A has a 7-position carousel for 36mm unmounted filters.  In addition to the filter wheel and OAG, these "A" series cameras offer an internal USB HUB(2.0) that provides two USB host ports and a USB to dual RS232 coverter.  A guiding camera, mount and electric focuser can be connected directly to this camera instead of the computer to reduce cable clutter and the chance of signal loss due to the long cables. Only one USB cable is needed to control all the peripherals.
 
Butterfly Shutter - long life and uniform illumination
This camera uses a mechanical shutter that has a butterfly shape. The shutter is directly driven by a motor with no other moving parts.  The working life is almost unlimited. The shutter has two sides that block light and open spaces in between.  The fan shape of the blades create even-illumination when opening, and even-darkness when closing for dark frames.  This feature is of great benefit when taking flat frames or making photometric measurements. 
 
 
Single 12V power socket
This camera uses a single 12V IN power port.  The power socket is threaded for a solid connection that will not accidentally disconnect.  There is another socket connected in parallel with the input that can be used to supply 12V OUT to other devices. 
 
Sample FIT Files
NGC2244 - A single 10 min. exposure at -20C. 
 
 
QHY90A Specification
CCD Sensor
KAF-8300 Mono, Standard Grade
Effective Pixels
3358(H) x 2536(V) 8.6mega pixels
Pixel Size
5.4um x 5.4um
Effective Area
17.96mm(H) x 13.52mm(V), Typical 4/3inch
Readout Type
Full Frame CCD, Progressive Scan
FullWell
>25.5ke
Anti-Blooming gate
Yes, 100X
ADC
16-bit
Readout Noise
9 e- Typical
System Gain
0.55 to 0.6 e-/ADU
Binning
1x1,2x2,4x4
Exposure Time
1ms-10000sec
TEC
2-stage
Cooling
-45C Below Ambient, Typical
Shutter
Even-illumination butterfly mechanical shutter
Moisture Control
Air Connector for removable silicon gel tube
Heat board for optical window of airproof CCD chamber
Built-in Filter Wheel
7-position, for 36mm unmounted filters
OAG interface
Six M3 scew holes for QHYOAG
Telescope Interface
M42/0.75 inner screw
Power consumption
0% cooling 8W (12V, 0.7A), 50% cooling 16.5W (12V, 1.4A), 100% cooling 27W (12V, 2.3A)
Weight
1550g
QHY90A Electronic Interface
USB Slave Port x1    USB host port x2    RS232 lemo 3pin port x2   2.1mm 12V DC port x2

 

QHY OAG Specification
 
Prism
8mm x 8mm Multi-Coated Prism
Through Hole Size
8mm diameter
Focuser
1.25-inch Multi-thread Focuser with 6mm range
Focuser Locker
Yes
Guide Camera Position Adjust
Yes
Directly Install Method
Six M3 screw to QHYCFW2 or QHY "A" series camera
Telescope Interface
M42/M54/M60 0.75 adapter ring (3mm thick)
Use for other camera
Yes, with third party M42/M54/M60 adapter ring on camera side
Thickness
10mm (without telescope adapter ring)
13mm (with telescope adapter ring)
   
 
The difference of Small Medium and Large Size
 
QHYOAG-S
QHYOAG-M
QHYOAG-L
Telescope Adapter Ring
M42/0.75
M54/0.75
M60/0.75
The circle diameter of six M3 screw location
54mm
62mm
68mm
Compatiable Device
QHY(IC)90A
QHY(IC)695A
QHYCFW2-S
QHY(IC)16200A
QHYCFW2-M
QHY(IC)16803
QHYCFW2-L
Suitable CCD SIZE
2/3inch
1inch
4/3
 
APS-C
APS-H
36*24
36x24mm
37x37mm(16803)
48x36mm(50100,requires special adapter)
Weight
127g
145g
149g
 
 
 
 
 
 
 
 
 
 

  

 
QHY90A Reference Dark/BIAS Frames
 
Bias Frame  0SEC
Dark Frame 60SEC 120SEC 300SEC 600SEC 900SEC

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