The new QHY410C uses Sony’s latest back-illuminated, full frame color sensor. The IMX410 is equipped with the sensor that used in the Nikon Z6, and Sony A7III. In addition to BSI, the IMX410 also has larger 5.94 um pixels giving it increases sensitivity of extended objects in low light. The IMX410 is expected to be Sony’s most sensitive full frame color sensor for astrophotography.
One benefit of the back-illuminated CMOS structure is improved full well capacity. This is particularly helpful for sensors with small pixels. When back-illumination is combined with somewhat larger pixels, the full well capacity and dynamic range are improved dramatically. The QHY410C has a full well capacity of 120k electrons! With its low read noise this produces a dynamic range greater than 17,000:1 or more than 14 STOPS. Moreover, the dynamic range remains fairly uniform even at higher gain settings.
The QHY410C is capable of only 1.1 electron of read noise at high gain and fast readout speed. One electron of read noise means the camera can achieve a SNR>3 at only 3 to 4 photons. This is perfect performance when conditions are photon limited, i.e., short exposures, narrow band imaging, etc., making this large area sensor ideal for sky surveys and time domain astronomy.
Sony’s Exmor R back-illuminated technology produces sensors that Sony estimates are twice as sensitive as similar front illuminated sensors. QHYCCD tests have borne out this claim. Additionally, Sony sensors are well known for their low dark current. QHYCCD’s proprietary thermal noise reduction technology and the QHY40C’s dual-stage regulated thermoelectric cooling further reduce dark current to extremely low levels for clean, long duration exposures when required.
Specifications
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QHY410C COLDMOS CAMERA SPECIFICATION
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| Model | QHY410C |
| Sensor | SONY IMX410 Full Frame BSI CMOS Sensor |
| AR Coating On CMOS chamber | Yes. Multi-layer AR coating |
| Pixel Size | 5.94um*5.94um |
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Effective Pixel Area
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6072(H)*4044(V)
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Effective Pixels
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24.55 M Pixels
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Effective Image Area
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36mm(H)*24mm(V)
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Fullwell
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120ke-
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AD Sample Depth
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14bit (output as 16bit and 8bit)
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Sensor Size
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Diagonal 43.3mm(Type 2.7)
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| Full Frame Rate and ROI Frame Rate |
USB3.0 Port:
Full Resolution 14 FPS @8BIT 7 FPS @16BIT 2048lines 23.5FPS @8BIT 11.5FPS@16BIT 1080lines 33.5FPS @8BIT 16.5FPS@16BIT 768lines 39FPS @8BIT 19FPS@16BIT 480lines 46FPS @8BIT 23FPS@16BIT |
| Readout Noise | 3.75e-@Low gain. 1.1e-@High gain |
| Maxium Dynamic Range | >17000:1 More than 14 STOPs |
| Dark Current | 0.01e/pixel/sec@ 0C 0.002e/pixel/sec@ -20C |
| Exposure Time Range | 100us-3600sec |
| Anti-Glow Control | Yes, Zero Glow |
| Shutter Type | Electric Rolling Shutter |
| Computer Interface | USB3.0 |
| Built-in Image Buffer | 1GByte (8Gbit) |
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Cooling System
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Dual Stage TEC cooler（-35C below ambient*）
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Anti-Dew Heater
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Yes
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| Silicon Gel Socket | Yes |
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Telescope Interface
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M54/0.75 Female Thread on the fast installer/center adjust ring
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| Optic Window Type |
AR+AR High Quality Multi-Layer Anti-Reflection Coating (For color camera user need to add a UV/IR filter in the light path) |
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Back Focal Length
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18mm(±0.5)
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Weigth
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785g
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| Power Consumption | ~ 30 Watts @ 100% TEC. 13 Watts @ 50%TEC |
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Reference Price
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USD3695
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