QHY268M-PH Monochrome Photographic APS-C Camera

Starting Price: $2,399.00 Sale Price: $2,039.00 Price as Configured: $2,039.00
Brand: QHYCCD / SKU: QHY-268M-PH (110080)
The QHY268M/C is a new generation of back-illuminated CMOS cameras with true 16-bit A/D and 3.76um pixels. This Sony sensor is an ideal CMOS sensor exhibiting no amplifier 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 grayscale levels.

With the advantage of low readout noise and high-speed readout, CMOS technology has revolutionized astronomical imaging. This monochrome, back-illuminated, high-sensitivity, astronomical imaging camera is the ideal choice for astro-imagers.
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Model QHYOAG-S QHYOAG-M QHYQAG-L
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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
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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.

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Model Filter Supported
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CFW3M-SR 5 position 2inch mounted/50mm unmounted
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About This Product
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QHY-030029 - QHY Active Extension Cable, DC 5V, 10m 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-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?

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QHY-ComboB2 (20104) - QHY Adapter Kit Combo B2 (for Canon EF Lens)
About This Product
  • QHY Adapter-Kit B2 compatible with QHY268M / QHY600 (Short BFL Version) and QHY CFW3-L
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QHY-ComboB3 (20105) - QHY Adapter Kit Combo B3 (for Nikon F Lens)
About This Product
  • QHY Adapter-Kit B3 compatible with QHY268M / QHY600 (Short BFL Version) and QHY CFW3-L
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  • Includes:
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QTY:  
Price as Configured: $2,039.00

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Model QHY268M QHY268C
CMOS Sensor SONY IMX571 M SONY IMX571 C
Mono/Color Mono Color
FSI/BSI BSI
Pixel Size 3.76um x 3.76um
Effective Pixel Area 6280*4210 (includes the optically black area and overscan area)
Effective Pixels 26MP
Sensor Size APS-C
A/D Sample Depth

Native 16-bit (0-65535 greyscale) A/D
Full Well Capacity (1×1, 2×2, 3×3) 51ke-
75ke- or above in extended full well mode
Full Frame Rate USB3.0 Port:
Full Resolution 6.8FPS @8BIT 6FPS @16BIT
2048lines 13.6FPS @8BIT 11.5FPS@16BIT
1080lines 25.4FPS @8BIT 19.5FPS@16BIT
768lines 35FPS @8BIT 25FPS@16BIT
480lines 50FPS @8BIT 34FPS@16BIT
Readout Noise 1.1e- High Gain,

3.5e- Low Gain

(5.3e- to 7.4e- in extended full well mode)

Dark Current -20C,0.0005e /pixel/sec

-10C,0.001e /pixel/sec

Exposure Time Range 30us-3600sec
Recommend Gain* 30 (PH Mode, or Extended Full Well Mode)

56 (High Gain Mode)

*With the improvement of the CMOS technology, For these 16bit CMOS cameras, even in lowest gain it has beyond the requirement of unit gain (less than 1e/ADU due to sufficient samples).

Amp Control Zero Amplifier Glow
Firmware/FPGA remote Upgrade Fully support via Camera USB port
Shutter Type Electronic Shutter
Computer Interface USB3.0
Built-in Image Buffer 1GByte DDR3 Memory
Cooling System Two-stage TEC cooler

Less than 1S lower than ambient temperature -30C in continuous mode

More than 1S continuous mode or lower than ambient temperature -35C in single frame mode

(Test temperature +20°)

Optic Window Type AR+AR High Quality Multi-Layer Anti-Reflection Coating
Anti-Dew Heater Yes
Humidity Sensor* Yes No
Telescope Interface Support M54 or M48 (Combined with adapters ) Support M54 or M48 (Combined with adapters )
Back Focal Length QHY268M: 12.5mm*
*If accompanied with the QHY filter wheel, the BFL consumed is counted as 12.5mm. The actual BFL (the intercept from the CMOS chip to the top of the camera) is 14.3mm (±0.3). Since most users will match CFW with monochrome cams, please take 12.5mm as reference.
QHY268C: 14.3mm(±0.3)*

*Since 2023, the top part of QHY268C is the same as 268M.

Weight About 810g About 810g