QHY 183 Monochrome or Color Camera. 20 mega pixels! High resolution with not very large telescopes.
The QHY183 is a back-illuminated COLDMOS camera, with 20 megapixels (mono or color). The pixel size is 2.4um for high resolution with modest sized telescopes. It can produce up to 19 FPS at 20 Mpix. It has dual TEC cooling lowering the temperature between 40º and 45º below ambient. The ADC is 10/10 bit, with 8/12 bit output and 1e-read noise only. It connects to the computer via USB 3.0 and exposure times can be from 50usec to approximately 1000 sec.
128MB DDR buffer
so you won't miss a single frame in long sequences! Like the other cameras in the Cooled Cmos QHYCCD family, the QHY183 features a 128MB DDRII image buffer, which is a great help for transferring large images and prevents frame loss in long sequences. It also aids in smoother operation on slower computers or computers with a USB 2.0 port. This buffer also helps in applications with multiple cameras and avoids USB transfer problems. For example, 4 QHY183M cameras can be used on the same computer to create an LRGB image.
Complete Anti-Humidity Solution
QHY has more than 10 years of experience in the design of refrigerated chambers, which has allowed it to develop an anti-humidity technology consisting of a fully air proof chamber with a CMOS window heater desiccant tank. This technology makes it possible to forget about dew on sensors and optical windows, even in the most humid environments.
Technical features:
- Sensor: SONY IMX183 monochrome
- Effective pixels: 5544*3694 20mg
- Pixel size: 2.4um * 2.4um
- Effective area: 13.3*8.9 Typical 1″
- QE: 84
- Capture Velocity
- 20 megapixels 19FPS
- 4K HD 31FPS
- 12 megapixels 31FPS
- Output Bit: 10bit and 12bit
- Read: low 1e@high gain2.7e @gain 0
- FullWell: 15000-16000e
- Exposure times: 50us - 3600 s
- Interface: USB 3.0
- Onboard DDR memory: 128MB DDR
- TEC: 2-stage TEC at -40C under normal temperature environment
- Electrical connection: 12V input with lock, USB3.0, 4PIN QHYCFW, 6PIN RJ11. Wheel control port.
- Software: SharpCAP, EZCAP_QT, ASCOM Driver, WDM Driver, Live Video BroadCast Driver
- Weight: approx. 450g (with M42/0.75 adapter)
The camera is delivered ready to use:
It is critical to understand the concept of "unity gain" in CMOS cameras, and to select an appropriate gain for capture. The unity gain is the position where the gain is 1e-/ADU; below this value the gain exceeds 1e-/ADU and this causes sampling noise. The unity gain value for the camera is 10.
Deep sky captures can be done in 2 ways:
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- in the traditional way with long duration exposures, with low gain to avoid image saturation, or
- usinglucky imagingwith higher gain to reduce noise, both readout and sampling.
QHY183C camera sample images
NGC6992 with QHY183C by Máximo Suarez
Colors of the Moon with QHY183C by Maximo Suarez
Mechanical configuration of the camera
You can install the camera on different telescopes and lenses with the different accessories that QHYCCD has developed.
