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QHY

268C


  • 000

This item is out of stock but you can place an order now and we’ll ship when it becomes available.


Note the pricing has NOT been finalized by QHYCCD at this time. Final pricing is still subject to change.

The 268C was announced at NEAIC/NEAF 2019. It is not currently available for order, but expected first deliveries will be in Summer/Fall 2019. We will update this page as soon as QHY begins accepting orders.

Description

The QHY268C is a color back-illuminated cooled CMOS camera with a 16-bit ADC, 3.76µm pixel size, 26mega pixels. The QHY268C has only a one shot color version.

The QHY268C has a native 16-bit A/D on-chip with 65536 levels. The 16bit ADC can get high sample resolution, system gain will be less than 1e/ADU resulting in no sample error noise.

One benefit of the back-illuminated CMOS structure is improved full well capacity. This is particularly helpful for sensors with small pixels. Even with unbinned 3.76µm pixels the QHY268C has a full well capacity of 44ke-. When binned 2x2 to 7.5µm the full well is 176ke- and when binned 3x3 to 11µm the full well is 396ke-.

The QHY268 has only one electron of read noise at high gain and 15FPS high 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.

The QHY268 is a back-illuminated Scientific CMOS camera with extremely low dark current using SONY's Exmor BSI CMOS technology.In general, a fan-blade mechanical shutter will be broken if it is used 200,000 times or so, and in some specific cases it is easy to fail to switch on or off. The advantage of an electronic shutter over a mechanical shutter is high reliability and stability when the observatory shoots a large number of pictures. The electronic shutter is a relatively perfect choice for the observatory.

Specifications

Model QHY268U3GC
Image Sensor SONY APS-C BSI CMOS Sensor
Pixel Size 3.76um x 3.76um
Color / Mono Version Only Color Version Avaliable
Sensor Surface Glass Clear Glass
 
 
Effective Pixels
26 Megapixels
Effective Image Area
APS-C format
Full Well Capacity (1x1, 2x2, 3x3)
44ke- / 176ke- / 396ke-
 
A/D
16-bit (0-65535 greyscale) for 1X1Binning

18bit in 2X2   19BIT in 3X3  20BIT in 4*4 software Binning
Sensor Size
APS-C format
Full Frame Rate
10FPS (For USB3.0 Communications)
Read Noise 1.0e- (at high gain)
Dark Current TBD
Exposure Time Range 20us - 3600sec
Firmware/FPGA remotely upgrade  Fully Support. via Camera USB port
Shutter Type Electric Rolling Shutter
Computer Interface USB3.0 / GigaE
Built-in Image Buffer 2GByte (16Gbit)
Cooling System
Dual Stage TEC cooler(-35C below ambient)
Anti-Dew Heater
Yes
Telescope Interface
M54/0.75
Optic Window Type

AR+AR High Quality Multi-Layer Anti-Reflection Coating

Back Focal Length
TBD
Weigth
TBD
Reference Price
TBD

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