Price 2 599,00 €
The QHY268M is a cooled, back-illuminated, 26 megapixel CMOS camera based on the Sony IMX571 sensor with native 16-bit A/D and 3.76um pixels. The BFL of QHY268M is 12.5mm under a new front design.
The Sony IMX571 sensor has on-chip 16-bit A/D for highest resolution of greyscale. The output is real 16-bits with 65536 levels. Compared to 12-bit and 14-bit A/D, 16-bits provides higher sampling resolution. At high gain, the camera yields close to 1e-/ADU with no sample error and low read noise.
The back-illuminated Sony Exmor sensor has about twice the QE of similar front illuminated sensors. The QHY268M has zero amplifer glow.
|Image Sensor||SONY APS-C CMOS Sensor IMX571|
|Sensor Type||Back Illuminated (BSI)|
|Pixel Size||3.76um x 3.76um|
|Sensor Surface Glass||Multi Layer AR coating|
|Effective Pixels||26 Megapixels|
|Effective Image Area||6280*4210 (includes the optically black area and overscan area)|
|Full Well Capacity||51ke-|
75ke- or above in extended full well mode
|A/D||Native 16-bit (0-65535 greyscale) A/D|
|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
|Read Noise||1.1e- High Gain, 3.5e- Low Gain|
(5.3e- to 7.4e- in extended full well mode)
|Dark Current||0.0005e/pixel/sec @ -20C 0.001e/pixel/sec @ -10C|
|Zero Amplifer Glow||Yes|
|Exposure Time Range||30us - 3600sec|
|Firmware/FPGA upgrade||Fully Support. via Camera USB port|
|Shutter Type||Electronic Shutter|
|Computer Interface||USB 3.0|
|Built-in Image Buffer||1GByte DDR3 Memory|
|Cooling System||Two-stage TEC coolerLess than 1S lower than ambient temperature -30C in continuous modeMore than 1S continuous mode or lower than ambient temperature -35C in single frame mode|
|Center inclination adjustment *||Yes|
|Extended Fullwell Mode*||Yes|
|Telescope Interface*||QHY268C: M54/0.75 （with CAA）and M48 (with standard adapter)|
QHY268M: Support M54 and M48 (with standard adapters )
|Optic Window Type|
AR+AR High Quality Multi-Layer Anti-Reflection Coating
|Back Focal Length*||QHY268C: 17.5mm (without CAA)|
This intercept does not include CAA. If CAA is used, it increases by 6mm (23.5mm total). Please check the mechanical drawing below for details.
QHY268M: 12.5mm (with CAA)
If used with the QHY filter wheel, the actual calculated intercept is 12.5mm. The actual BFL (the intercept from the CMOS chip to the top of the camera) is 14.5mm. Since most uses will match CFW with monochrome cams, please take 12.5mm as major reference. Check the mechanical drawing below for details.
These terms and conditions are valid from November 7th, 2020.
Astro Art Finland
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