QHY533 Cooled Monochrome Back-Illuminated Camera
Starting Price: $1,159.00
Price as Configured: $1,159.00
Price as Configured: $1,159.00
Brand: QHYCCD / SKU: QHY-533-M
With the advantage of low readout noise and high-speed readout, CMOS technology has revolutionized astronomical imaging. The QHY533M/C is a new generation of back-illuminated CMOS cameras with 3.76um pixels. The QHY533M/C uses the similar series of sensor as the flagship models QHY600 and QHY268, featuring low noise.
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BSI
One benefit of the back-illuminated CMOS structure is improved full well capacity. This is particularly helpful for sensors with small pixels.In a typical front-illuminated sensor, photons from the target entering the photosensitive layer of the sensor must first pass through the metal wiring that is embedded just above the photosensitive layer. The wiring structure reflects some of the photons and reduces the efficiency of the sensor.
In the back- illuminated sensor the light is allowed to enter the photosensitive surface from the reverse side. In this case the sensor’s embedded wiring structure is below the photosensitive layer. As a result, more incoming photons strike the photosensitive layer and more electrons are generated and captured in the pixel well. This ratio of photon to electron production is called quantum efficiency. The higher the quantum efficiency the more efficient the sensor is at converting photons to electrons and hence the more sensitive the sensor is to capturing an image of something dim.
TRUE RAW Data
In the DSLR implementation there is a RAW image output, but typically it is not completely RAW. Some evidence of noise reduction and hot pixel removal is still visible on close inspection. This can have a negative effect on the image for astronomy such as the “star eater” effect. However, QHY Cameras offer TRUE RAW IMAGE OUTPUT and produces an image comprised of the original signal only, thereby maintaining the maximum flexibility for post-acquisition astronomical image processing programs and other scientific imaging applications.
Anti-Dew Technology
Based on almost 20-year cooled camera design experience, The QHY cooled camera has implemented the fully dew control solutions. The optic window has built-in dew heater and the chamber is protected from internal humidity condensation. An electric heating board for the chamber window can prevent the formation of dew and the sensor itself is kept dry with our silicon gel tube socket design for control of humidity within the sensor chamber.
Cooling
In addition to dual stage TE cooling, QHYCCD implements proprietary technology in hardware to control the dark current noise.
Design
QHY533M/C has a different interface design to be more flexible to deal with different use scenarios.
QHY533C will offer a free Adapter Kit E, which can be directly connected to the 55mm BFL M48 interface MPCC, or Nikon / Canon DSLR lens (need to purchase another DSLR lens adapter). At the same time, the QHY533C provides C-port thread and you can directly mount C-port lens.
QHY533M external use of threaded interface can be directly connected to the small filter wheel. This time we will launch a special standard small filter wheel version together with the 533M, which can be assembled directly by the user externally without removing the disc. When the QHY533M + filter wheel combination is connected to a DSLR lens, only an additional DSLR lens adapter ring (sold separately) is required to complete the focus.
QHY533M/C comes with an additional adapter for tripod interface. This makes it easier to shoot with a DSLR lens.
QHYCFW3S Adjustment for QHY533M
By the way, this adapter is still contained in CFW3S-SR’s package. You can still use CFW3S-SR with QHY183 or QHY163.
QHY533M parallel position adjustment
Curves
Mechanical Dimensions
QHY533M
QHY533C
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