Cámara CMOS Refrigerada de tamaño reducido QHY174 (GPS)
QHYCCD pleased to introduce our QHY174M-GPS COLDMOS camera with optional GPS based precision time and location function, useful for imaging occultations, eclipses, meteors, and other scientific imaging requiring a highly precise recording of the time and location of the observation on every frame.
The QHY174M has dual stage TE cooling to -45C below ambient with full anti-moisture control including heated optical window and removable silicon tube for the sensor chamber. The camera has our 4-pin QHYCFW2 filter wheel control port and a 6-pin autoguider port. The QHY174 also has an anti-amp glow function. It can reduce the IMX174 sensor's amplifier glow significantly in long exposures.
The IMX174 sensor has a global shutter and is capable of high frame rates, both ideal features for a time-domain imaging camera. In 2014 Sony introduced this device which featured a new technology called Pregius ?, redefining the global shutter CMOS imaging category and providing the best of both worlds with fast frame rate and CCD-like imaging performance. The technology offers lower dark noise, which enables higher gains without compromising image quality, as well as higher quantum efficiency. The global shutter also eliminates pixelization caused by atmospheric agitation when imaging the Planets and Moon at high frame rates.
The QHY174's most interesting feature is the optional precision GPS time functions. The QHY174M-GPS will record the global shutter exposure starting and ending time with microsecond precision. Two QHY174 cameras, for example, each located anywhere in the world, can have the same time base, accurate to microseconds. In order to guarantee the starting and ending time of the exposure, the QHY174 has a built-in LED pulse calibration circuit precise to 1 microsecond.
The QHY174 camera is designed to be an excellent planetary, lunar, solar and meteor capture video camera. With a 50mm F1.4 lens it will record mag 8 to mag 9 stars in live video recording at 30FPS (33ms exposure), several magnitudes fainter than can typically be seen with the naked eye. The QHY174's high sensitivity with HD resolution will push video astronomy to new heights.
There main differentiating features of this camera over competing models:
1. Optional GPS time and location data embedded in the image
2. Anti-dew heater to eliminate condensation and ice from forming on the camera
3. Anti-amp glow circuit to reduce the amplifier glow in long duration images
QHY174GPS has two working modes
Master mode: In Master Mode, the camera is free running and the internal 10MHz GPS synced clock will measure and record the shutter's opening and closing time.
Slave mode: In Slave Mode you can input a target start time and the interval period for two frames. For example: You want three cameras in different locations (maybe thousands of kilometers apart) to start an exposure at 2016.3.9.UTC 14:00:00.000000 and then to continue with exposures at the interval time of 0.100000 sec. After you input these value, all the three cameras will wait until this time and then simultaneously start video recording, e.g.:
QHY174-GPS New Horizon Science Project
More than 20 QHY174-GPS cameras were selected by NASA's New Horizon Team for imaging an occultation by MU69. The data will be using for the New Horizon MU69 flyby in 2019. The imaging mission was a success and the MU69 occultation event was record by five team members.
"This effort, spanning six months, three spacecraft, 24 portable ground-based telescopes, and NASA's SOFIA airborne observatory was the most challenging stellar occultation in the history of astronomy, but we did it!" said Alan Stern, New Horizons principal investigator from SwRI.
QHY174/GPS COLDMOS CAMERA SPECIFICATION
- COMS Sensor SONY IMX174 CMOS
- Pixel Size 5.86um*5.86um
- Effective Pixel Area 1920*1200
- Effective Pixels 2mega
- Effective Image Area 11.25mm*7.03mm
- QE 78%
- Fullwell >32ke-
- AD Sample Depth 12/10bit (output as 16bit and 8bit)
- Sensor Size Typical 1/1.2 inch
- Full Frame Rate and ROI Frame Rate
138FPS@1936x1216
260FPS@960x600
490FPS@480x300
*Note：QHYCCD has optimized the cmos drive freqency and limit the max frame rate. The CMOS sensor may not work under the maxium frequency to ensure the better noise performance. If you need the customized higher frame rate version please contact QHYCCD.
- ROI Support Yes. Any Area ROI
- Readout Noise 5.3e-@Gain0% 2.8e-@Gain60% 1.6e-@Gain100%
- Exposure Time Range 5us-900sec
- Binning 1x1,2x2
- Anti-Glow Control Yes (Reduces amplifier glow significantly)
- Shutter Type Electric Global Shutter
- Computer Interface USB3.0 Super Speed
- Non-volatile memory / On camera storage Build-in total 512Kbytes Flash Memory. 100Kbytes user-accessible space; for stellar ROI frames for analysis of exoplanet investigation, occultations, atmospheric seeing messurement, focus , optic analysis etc. Support 100*100 image x 10rames 50*50 image x40frames. 25*25 image x160frames 10*10 image * 1000 frames （total frame numbers is based on 8bit image）
- Cooling System Dual Stage TEC cooler（-40C below ambient),Temperature Regulated
- Anti-Dew Control Connector for removable silicon gel tube Heater board for CMOS chamber optical window
- Telescope Interface M42/0.75 / 2inch faster installer. Optional C-mount adapter
- Optic Window Type Mono Version:AR+AR High Quality Multi-Layer Anti-Reflection Coating Color Version: IR cut coating
- Guide Port 6PIN RJ11 Guide Port
- Color Wheel Port 4PIN QHYCFW Socket
- Back Focal Length TBD
- Weigth 450g
- GPS version, Time-Stamp Precision 1 micro-second of the GPS UTC clock
Cámara CMOS Refrigerada de tamaño reducido QHY174 (GPS)
