QHY268PH-C APS-C Format Cooled Color Camera

Starting Price: $2,099.00
Price as Configured: $2,099.00
Brand: QHYCCD / SKU: QHY-268PH-C
The QHY268M/C is a new generation of back-illuminated CMOS cameras with true 16-bit A/D and 3.76um pixels. This new Sony sensor is an ideal CMOS sensor exhibiting no amplifer glow. 16-bit A/D gives high resolution sampling of the whole full well range. Digitizing 0-65535 levels yields a smooth image with continuous gradation of greyscale levels. The QHY268M/C is a cooled, back-illuminated, CMOS camera based on the Sony IMX571 sensor with native 16-bit A/D and 3.76um pixels.
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QHY-030029 - QHY Active Extension Cable, DC 5V, 10m Long
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About This Product
Why do you need an Active Extension Cable?

According to the characteristics of USB3.0, the maximum supported cable length of USB3.0 is about 3 meters, or the transmission stability cannot be guaranteed above 3 meters. In order to ensure the image quality, the standard USB cable length of QHY is 1.8 meters.
QHY-030028 - QHY Active Extension Cable, DC 5V, 5m Long
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QHY-030028 - QHY Active Extension Cable, DC 5V, 5m Long
About This Product
Why do you need an Active Extension Cable?

According to the characteristics of USB3.0, the maximum supported cable length of USB3.0 is about 3 meters, or the transmission stability cannot be guaranteed above 3 meters. In order to ensure the image quality, the standard USB cable length of QHY is 1.8 meters.
QHY-ComboD1 (20107) - QHY Adapter Kit Combo D1
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$40.00
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QHY-ComboD1 (20107) - QHY Adapter Kit Combo D1
About This Product
  • 55mm backfocus length achievable with the kit
  • Includes:
    • 1x 5mm M54 / M48 Adapter
    • 1x QHY 2.5mm 2" Filter Fixer #1932780
    • 1x 10mm Spacer
    • 1x 14mm Spacer
    • 8x 36mm M3 screws
  • The Kit is supplied as a standard accessory with QHY600C or QHY268C

Compatible QHY cameras are:

  • QHY268C
  • QHY600C
  • QHY168C
  • QHY247C
  • QHY128C
  • QHY410C
  • QHY367C
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QHY-ComboD2 (20108) - QHY Adapter Kit Combo D2 (for Canon EF Lens)
About This Product
  • Achievable back focus length of 44.1 mm with adaptable Canon EF lens
  • Includes:
    • 1x 10mm M54 Canon EF Adapter
    • 1x 4mm M54 Screwed Adapter
    • 1x QHY 2.5mm 2" Filter Fixer #1932780
    • 1x 3mm Spacer
    • 1x 1mm Spacer
    • 8x 14mm M3 screws

    The compatible QHY cameras are as follows:

    • QHY268C
    • QHY600C
    • QHY168C
    • QHY247C
    • QHY128C
    • QHY410C
    • QHY367C
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QHY-ComboD3 (20109) - QHY Adapter Kit Combo D3 (for Nikon F Lens)
About This Product
  • Achievable back focus length of 46.5 mm with adaptable Nikon F lens
  • Includes:
    • 1x 10mm M54 Nikon F Adapter
    • 1x 4mm M54 Screwed Adapter
    • 1x QHY 2,5mm 2" Filter Fixer #1932780
    • 1x 3mm Spacer
    • 1x 0,5mm Spacer
    • 8x 16mm M3 screws

The compatible QHY cameras are as follows:

  • QHY268C
  • QHY600C
  • QHY168C
  • QHY247C
  • QHY128C
  • QHY410C
  • QHY367C
QHY-CFW3-L (110047) - QHY Color Filter Wheel - Large
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$619.00
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QHY-CFW3-L (110047) - QHY Color Filter Wheel - Large
About This Product
The QHY CFW3 series filter wheels are available in four sizes to accommodate filters from 1.25-inch to 50 millimeters square.

This product is the Large size.

Model Filter Supported
CFW3XL Slot 1: 9 position 2inch mounted/ 50mm unmounted
Slot 2: 7 position 50mm*50mm square
CFW3L 7 position 2inch mounted/50mm unmounted
CFW3M-SR 5 position 2inch mounted/50mm unmounted
CFW3M-US 7 position 36mm unmounted
CFW3S-SR 7 position 1.25inch mounted/31mm unmounted
CFW3S-US 7 position 1.25inch mounted/31mm unmounted

QHY-CFW3-M - QHY Color Filter Wheel - Medium
QHY-CFW3-M - QHY Color Filter Wheel - Medium
$349.00
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QHY-CFW3-M - QHY Color Filter Wheel - Medium
About This Product
The QHY CFW3 series filter wheels are available in four sizes to accommodate filters from 1.25-inch to 50 millimeters square.

This product is the Medium size, available in a standard (SR) version or thin (US) version.

Model Filter Supported
CFW3XL Slot 1: 9 position 2inch mounted/ 50mm unmounted
Slot 2: 7 position 50mm*50mm square
CFW3L 7 position 2inch mounted/50mm unmounted
CFW3M-SR 5 position 2inch mounted/50mm unmounted
CFW3M-US 7 position 36mm unmounted
CFW3S-SR 7 position 1.25inch mounted/31mm unmounted
CFW3S-US 7 position 1.25inch mounted/31mm unmounted

QHY-OAG-M (100094) - QHY Off-Axis Guider - Medium
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$230.00
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QHY-OAG-M (100094) - QHY Off-Axis Guider - Medium
About This Product
The QHY Off-Axis Guider (OAG) has three models (QHYOAG-S,QHYOAG-M,QHYOAG-L).

This product is the Medium version.

Model QHYOAG-S QHYOAG-M QHYQAG-L
Telescope Interface M42/0.75 M54/0.75 M62/0.75
Diameter of 6 x M3 screw hole positions 54mm 62mm 68mm
Suitable for CCD/CMOS Size 1inch or smaller 4/3 inch

APS-C,

APS-H,

36 x 24mm

QTY:  
Price as Configured: $2,099.00

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Features


In order to provide smooth uninterrupted data transfer of the entire 26MP sensor at high speed, the QHY268 has 1GB DDR3 image buffer. The pixel count of the latest generation of CMOS sensors is very high resulting in greater memory requirements for temporary and permanent storage. The QHY268 has adopted a large-capacity memory of up to 1GB. Data throughput is doubled. This large image buffer meets the needs of high-speed image acquisition and transmission of the new generation of CMOS, making shooting of multiple frames smoother and less stuttered, further reducing the pressure on the computer CPU.

Extended Full Well Capacity and Multiple Read Modes

With a pixel size of 3.76um, these sensors already have an impressive full well capacity of 51ke. Nevertheless, QHYCCD has implemented a unique approach to achieve a full well capacity higher than 51ke- through innovative user controllable read mode settings. In extended full well readout mode, the QHY268 can achieve nearly 75ke-. Greater full-well capacity provides greater dynamic range and large variations in magnitude of brightness are less likely to saturate.

Native 16 bit A/D

The new Sony sensor has native 16-bit A/D on-chip. The output is real 16-bits with 65536 levels. Compared to 12-bit and 14-bit A/D, a 16-bit A/D yields higher sample resolution and the system gain will be less than 1e-/ADU with no sample error noise and very low read noise.

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.

Zero Amplify Glow

This is also a zero amplifier glow camera.

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 years of 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.

Readout Modes and Curves

Multiple Readout Modes is a new function for newer QHY Cameras. Different readout modes have different driver timing, etc., and result in different performance. The QHY268 currently has four readout modes, and more modes will be added in the future. These readout modes are currently supported in the QHY ASCOM Camera Driver, SharpCAP software and the N.I.N.A software.

Readout Mode #0 (Photographic Mode). In this mode there is a drop in the noise between Gain 25 and Gain 26. We recommend setting the Gain to 26 to begin. At this setting the full well is 27ke- and readout noise is 2.7e-. For every long exposures you can lower the gain from this point to increase the full well capacity.

Readout Mode #1 (High Gain Mode). Please note there is a HGC/LGC switch point at gain55 to gain56. Gain0-55 uses LGC and Gain55-100 uses HGC.

Readout Mode #2 (Extended Full Well Mode).

Now QHY268 adds #3 mode Extend Full Well 2CMSIT (yellow curve). The advantage of this mode is that it has the same full well value and system gain as the #2 mode Extend Fullwell, but the read noise is reduced by about 1.3 times.

This function needs to be used with 2020.6.26 or newer SDK. If your software cannot display this mode, please download the QHYAllInOne installation package to update the SDK in the software.

Absolute QE

Relative QE

Mechanical Dimensions
QHY268C